The Experts below are selected from a list of 262179 Experts worldwide ranked by ideXlab platform
Gento Mogi - One of the best experts on this subject based on the ideXlab platform.
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measuring the relative efficiency of Hydrogen Energy technologies for implementing the Hydrogen economy an integrated fuzzy ahp dea approach
International Journal of Hydrogen Energy, 2011Co-Authors: Gento Mogi, Zhuolin Li, Sang Yong Park, Young Jin HaAbstract:Abstract To provide and improve national Energy security and low-carbon green Energy economy, as a government-supported research institute related to developing new and renewable Energy technologies, including Energy efficiency, Korea Institute of Energy Research (KIER) needs to establish a long-term strategic Energy technology roadmap (ETRM) in the Hydrogen economy sector for sustainable economic development. In this paper, we establish a strategic ETRM for Hydrogen Energy technologies in the Hydrogen economy considering five criteria: economic impact (EI), commercial potential (CP), inner capacity (IC), technical spin-off (TS), and development cost (DC). As an extended research, we apply the integrated two-stage multi-criteria decision-making approach, including the hybrid fuzzy analytic hierarchy process (AHP) and data envelopment analysis (DEA) model, to assess the relative efficiency of Hydrogen Energy technologies in order to scientifically implement the Hydrogen economy. Fuzzy AHP reflects the vagueness of human thought with interval values, and allocates the relative importance and weights of four criteria: EI, CP, IC, and TS. The DEA approach measures the relative efficiency of Hydrogen Energy technologies for the Hydrogen economy with a ratio of outputs over inputs. The result of measuring the relative efficiency of Hydrogen Energy technologies focuses on 4 Hydrogen technologies out of 13 Hydrogen Energy technologies. KIER has to focus on developing 4 strategic Hydrogen Energy technologies from economic view point in the first phase with limited resources. In addition, if Energy policy makers consider as some candidates for strategic Hydrogen technologies of the other 9 Hydrogen Energy technology, the performance and productivity of 9 Hydrogen Energy technologies should be increased and the input values of them have to be decreased. With a scientific decision-making approach, we can assess the relative efficiency of Hydrogen Energy technologies efficiently and allocate limited research and development (R&D) resources effectively for well-focused R&D.
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prioritizing the weights of Hydrogen Energy technologies in the sector of the Hydrogen economy by using a fuzzy ahp approach
International Journal of Hydrogen Energy, 2011Co-Authors: Gento MogiAbstract:KIER, government supported research institute, establishes a long-term strategic Energy technology development roadmap essentially with selection and specialization of Energy technology R&D and for Korea's national security. In this paper, we establish a strategic Hydrogen Energy technology roadmap taking economic impact, commercial potential, inner capacity, and technical spin-off into account. We suggest a methodology to prioritize the relative weights of Hydrogen Energy technologies of Hydrogen Energy technology roadmap (ETRM) as we allocate R&D budget effectively using a fuzzy analytic hierarchy process (AHP), which reflects the vagueness of human thoughts instead of crisp numbers efficiently. In the sector of the Hydrogen ETRM which is composed of 6 Hydrogen Energy technologies, PEMFC technology is the most preferred and technology (0.29), followed by DEFC tech (0.28), SOFC tech (0.24), Hydrogen separation & storage tech (0.10), and Hydrogen production tech (0.09).
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econometric analysis of the r d performance in the national Hydrogen Energy technology development for measuring relative efficiency the fuzzy ahp dea integrated model approach
International Journal of Hydrogen Energy, 2010Co-Authors: Seong Kon Lee, Gento Mogi, Sang Kon Lee, K S Hui, Jong Wook KimAbstract:Hydrogen Energy technology can be one of the best key players related to the sector of the United Nations Framework Convention on Climate Change (UNFCCC) and the Hydrogen economy. Comparing to other technologies, Hydrogen Energy technology is more environmentally sound and friendly Energy technology and has great potential as a future dominant Energy carrier. Advanced nations including Korea have been focusing on the development of Hydrogen Energy technology R&D for the sustainable development and low carbon green society. In this paper, we applied the integrated fuzzy analytic hierarchy process (Fuzzy AHP) and the data envelopment analysis (DEA) for measuring the relative efficiency of the R&D performance in the national Hydrogen Energy technology development. On the first stage, the fuzzy AHP effectively reflects the vagueness of human thought. On the second stage, the DEA approach measures the relative efficiency of the national R&D performance in the sector of Hydrogen Energy technology development with economic viewpoints. The efficiency score can be the fundamental data for policymakers for the well focused R&D planning.
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econometric analysis of the r d performance in the national Hydrogen Energy technology development for measuring relative efficiency the fuzzy ahp dea integrated model approach
International Journal of Hydrogen Energy, 2010Co-Authors: Seong Kon Lee, Gento Mogi, Sang Kon Lee, K S Hui, Jong Wook KimAbstract:Hydrogen Energy technology can be one of the best key players related to the sector of the United Nations Framework Convention on Climate Change (UNFCCC) and the Hydrogen economy. Comparing to other technologies, Hydrogen Energy technology is more environmentally sound and friendly Energy technology and has great potential as a future dominant Energy carrier. Advanced nations including Korea have been focusing on the development of Hydrogen Energy technology R&D for the sustainable development and low carbon green society. In this paper, we applied the integrated fuzzy analytic hierarchy process (Fuzzy AHP) and the data envelopment analysis (DEA) for measuring the relative efficiency of the R&D performance in the national Hydrogen Energy technology development. On the first stage, the fuzzy AHP effectively reflects the vagueness of human thought. On the second stage, the DEA approach measures the relative efficiency of the national R&D performance in the sector of Hydrogen Energy technology development with economic viewpoints. The efficiency score can be the fundamental data for policymakers for the well focused R&D planning.
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the competitiveness of korea as a developer of Hydrogen Energy technology the ahp approach
Energy Policy, 2008Co-Authors: Seong Kon Lee, Gento Mogi, Jong Wook KimAbstract:Korea's need for Energy conservation and alternative Energy is greater than for any other nation. Korea imports more than 97% of its total Energy consumption and ranks 10th in the world in terms of Energy consumption. Developing Hydrogen Energy technology has great potential to cope with Korea's Energy security and to establish Korea's Hydrogen economy. In this study, we analysed the potential of Korea to be competitive in development of Hydrogen Energy technology using the analytic hierarchy process (AHP) approach. In this paper, two scenario analyses are presented: in the first, the R&D budget is a criterion and in the second it is not. The results show that Korea is the sixth most competitive nation because of the low score for infrastructure required for Hydrogen technology. In addition, compared with US results for both scenarios, patents, papers and proceedings, R&D budgets, and infrastructure for Hydrogen technology are inferior to the US, which is ranked in first place for this sector. Korean policymakers have to concentrate on those sectors to strengthen Korea's competitiveness in the development of Hydrogen Energy technology.
Jong Wook Kim - One of the best experts on this subject based on the ideXlab platform.
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econometric analysis of the r d performance in the national Hydrogen Energy technology development for measuring relative efficiency the fuzzy ahp dea integrated model approach
International Journal of Hydrogen Energy, 2010Co-Authors: Seong Kon Lee, Gento Mogi, Sang Kon Lee, K S Hui, Jong Wook KimAbstract:Hydrogen Energy technology can be one of the best key players related to the sector of the United Nations Framework Convention on Climate Change (UNFCCC) and the Hydrogen economy. Comparing to other technologies, Hydrogen Energy technology is more environmentally sound and friendly Energy technology and has great potential as a future dominant Energy carrier. Advanced nations including Korea have been focusing on the development of Hydrogen Energy technology R&D for the sustainable development and low carbon green society. In this paper, we applied the integrated fuzzy analytic hierarchy process (Fuzzy AHP) and the data envelopment analysis (DEA) for measuring the relative efficiency of the R&D performance in the national Hydrogen Energy technology development. On the first stage, the fuzzy AHP effectively reflects the vagueness of human thought. On the second stage, the DEA approach measures the relative efficiency of the national R&D performance in the sector of Hydrogen Energy technology development with economic viewpoints. The efficiency score can be the fundamental data for policymakers for the well focused R&D planning.
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econometric analysis of the r d performance in the national Hydrogen Energy technology development for measuring relative efficiency the fuzzy ahp dea integrated model approach
International Journal of Hydrogen Energy, 2010Co-Authors: Seong Kon Lee, Gento Mogi, Sang Kon Lee, K S Hui, Jong Wook KimAbstract:Hydrogen Energy technology can be one of the best key players related to the sector of the United Nations Framework Convention on Climate Change (UNFCCC) and the Hydrogen economy. Comparing to other technologies, Hydrogen Energy technology is more environmentally sound and friendly Energy technology and has great potential as a future dominant Energy carrier. Advanced nations including Korea have been focusing on the development of Hydrogen Energy technology R&D for the sustainable development and low carbon green society. In this paper, we applied the integrated fuzzy analytic hierarchy process (Fuzzy AHP) and the data envelopment analysis (DEA) for measuring the relative efficiency of the R&D performance in the national Hydrogen Energy technology development. On the first stage, the fuzzy AHP effectively reflects the vagueness of human thought. On the second stage, the DEA approach measures the relative efficiency of the national R&D performance in the sector of Hydrogen Energy technology development with economic viewpoints. The efficiency score can be the fundamental data for policymakers for the well focused R&D planning.
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the competitiveness of korea as a developer of Hydrogen Energy technology the ahp approach
Energy Policy, 2008Co-Authors: Seong Kon Lee, Gento Mogi, Jong Wook KimAbstract:Korea's need for Energy conservation and alternative Energy is greater than for any other nation. Korea imports more than 97% of its total Energy consumption and ranks 10th in the world in terms of Energy consumption. Developing Hydrogen Energy technology has great potential to cope with Korea's Energy security and to establish Korea's Hydrogen economy. In this study, we analysed the potential of Korea to be competitive in development of Hydrogen Energy technology using the analytic hierarchy process (AHP) approach. In this paper, two scenario analyses are presented: in the first, the R&D budget is a criterion and in the second it is not. The results show that Korea is the sixth most competitive nation because of the low score for infrastructure required for Hydrogen technology. In addition, compared with US results for both scenarios, patents, papers and proceedings, R&D budgets, and infrastructure for Hydrogen technology are inferior to the US, which is ranked in first place for this sector. Korean policymakers have to concentrate on those sectors to strengthen Korea's competitiveness in the development of Hydrogen Energy technology.
Naoya Shibata - One of the best experts on this subject based on the ideXlab platform.
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scalable water splitting on particulate photocatalyst sheets with a solar to Hydrogen Energy conversion efficiency exceeding 1
Nature Materials, 2016Co-Authors: Qian Wang, Takashi Hisatomi, Qingxin Jia, Hiromasa Tokudome, Miao Zhong, Chizhong Wang, Zhenhua Pan, Tsuyoshi Takata, Mamiko Nakabayashi, Naoya ShibataAbstract:Photocatalytic water splitting using particulate semiconductors is a potentially scalable and economically feasible technology for converting solar Energy into Hydrogen. Z-scheme systems based on two-step photoexcitation of a Hydrogen evolution photocatalyst (HEP) and an oxygen evolution photocatalyst (OEP) are suited to harvesting of sunlight because semiconductors with either water reduction or oxidation activity can be applied to the water splitting reaction. However, it is challenging to achieve efficient transfer of electrons between HEP and OEP particles. Here, we present photocatalyst sheets based on La- and Rh-codoped SrTiO3 (SrTiO3:La, Rh; ref. ) and Mo-doped BiVO4 (BiVO4:Mo) powders embedded into a gold (Au) layer. Enhancement of the electron relay by annealing and suppression of undesirable reactions through surface modification allow pure water (pH 6.8) splitting with a solar-to-Hydrogen Energy conversion efficiency of 1.1% and an apparent quantum yield of over 30% at 419 nm. The photocatalyst sheet design enables efficient and scalable water splitting using particulate semiconductors.
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scalable water splitting on particulate photocatalyst sheets with a solar to Hydrogen Energy conversion efficiency exceeding 1
Nature Materials, 2016Co-Authors: Qian Wang, Takashi Hisatomi, Qingxin Jia, Hiromasa Tokudome, Miao Zhong, Chizhong Wang, Zhenhua Pan, Tsuyoshi Takata, Mamiko Nakabayashi, Naoya ShibataAbstract:Photocatalytic water splitting using semiconductors is attractive for converting solar Energy into Hydrogen. An efficient and scalable system based on particulate photocatalyst sheets is now shown to exhibit Energy conversion efficiency exceeding 1%. Photocatalytic water splitting using particulate semiconductors is a potentially scalable and economically feasible technology for converting solar Energy into Hydrogen1,2,3. Z-scheme systems based on two-step photoexcitation of a Hydrogen evolution photocatalyst (HEP) and an oxygen evolution photocatalyst (OEP) are suited to harvesting of sunlight because semiconductors with either water reduction or oxidation activity can be applied to the water splitting reaction4,5. However, it is challenging to achieve efficient transfer of electrons between HEP and OEP particles6,7. Here, we present photocatalyst sheets based on La- and Rh-codoped SrTiO3 (SrTiO3:La, Rh; ref. 8) and Mo-doped BiVO4 (BiVO4:Mo) powders embedded into a gold (Au) layer. Enhancement of the electron relay by annealing and suppression of undesirable reactions through surface modification allow pure water (pH 6.8) splitting with a solar-to-Hydrogen Energy conversion efficiency of 1.1% and an apparent quantum yield of over 30% at 419 nm. The photocatalyst sheet design enables efficient and scalable water splitting using particulate semiconductors.
Seong Kon Lee - One of the best experts on this subject based on the ideXlab platform.
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econometric analysis of the r d performance in the national Hydrogen Energy technology development for measuring relative efficiency the fuzzy ahp dea integrated model approach
International Journal of Hydrogen Energy, 2010Co-Authors: Seong Kon Lee, Gento Mogi, Sang Kon Lee, K S Hui, Jong Wook KimAbstract:Hydrogen Energy technology can be one of the best key players related to the sector of the United Nations Framework Convention on Climate Change (UNFCCC) and the Hydrogen economy. Comparing to other technologies, Hydrogen Energy technology is more environmentally sound and friendly Energy technology and has great potential as a future dominant Energy carrier. Advanced nations including Korea have been focusing on the development of Hydrogen Energy technology R&D for the sustainable development and low carbon green society. In this paper, we applied the integrated fuzzy analytic hierarchy process (Fuzzy AHP) and the data envelopment analysis (DEA) for measuring the relative efficiency of the R&D performance in the national Hydrogen Energy technology development. On the first stage, the fuzzy AHP effectively reflects the vagueness of human thought. On the second stage, the DEA approach measures the relative efficiency of the national R&D performance in the sector of Hydrogen Energy technology development with economic viewpoints. The efficiency score can be the fundamental data for policymakers for the well focused R&D planning.
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econometric analysis of the r d performance in the national Hydrogen Energy technology development for measuring relative efficiency the fuzzy ahp dea integrated model approach
International Journal of Hydrogen Energy, 2010Co-Authors: Seong Kon Lee, Gento Mogi, Sang Kon Lee, K S Hui, Jong Wook KimAbstract:Hydrogen Energy technology can be one of the best key players related to the sector of the United Nations Framework Convention on Climate Change (UNFCCC) and the Hydrogen economy. Comparing to other technologies, Hydrogen Energy technology is more environmentally sound and friendly Energy technology and has great potential as a future dominant Energy carrier. Advanced nations including Korea have been focusing on the development of Hydrogen Energy technology R&D for the sustainable development and low carbon green society. In this paper, we applied the integrated fuzzy analytic hierarchy process (Fuzzy AHP) and the data envelopment analysis (DEA) for measuring the relative efficiency of the R&D performance in the national Hydrogen Energy technology development. On the first stage, the fuzzy AHP effectively reflects the vagueness of human thought. On the second stage, the DEA approach measures the relative efficiency of the national R&D performance in the sector of Hydrogen Energy technology development with economic viewpoints. The efficiency score can be the fundamental data for policymakers for the well focused R&D planning.
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the competitiveness of korea as a developer of Hydrogen Energy technology the ahp approach
Energy Policy, 2008Co-Authors: Seong Kon Lee, Gento Mogi, Jong Wook KimAbstract:Korea's need for Energy conservation and alternative Energy is greater than for any other nation. Korea imports more than 97% of its total Energy consumption and ranks 10th in the world in terms of Energy consumption. Developing Hydrogen Energy technology has great potential to cope with Korea's Energy security and to establish Korea's Hydrogen economy. In this study, we analysed the potential of Korea to be competitive in development of Hydrogen Energy technology using the analytic hierarchy process (AHP) approach. In this paper, two scenario analyses are presented: in the first, the R&D budget is a criterion and in the second it is not. The results show that Korea is the sixth most competitive nation because of the low score for infrastructure required for Hydrogen technology. In addition, compared with US results for both scenarios, patents, papers and proceedings, R&D budgets, and infrastructure for Hydrogen technology are inferior to the US, which is ranked in first place for this sector. Korean policymakers have to concentrate on those sectors to strengthen Korea's competitiveness in the development of Hydrogen Energy technology.
Qian Wang - One of the best experts on this subject based on the ideXlab platform.
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scalable water splitting on particulate photocatalyst sheets with a solar to Hydrogen Energy conversion efficiency exceeding 1
Nature Materials, 2016Co-Authors: Qian Wang, Takashi Hisatomi, Qingxin Jia, Hiromasa Tokudome, Miao Zhong, Chizhong Wang, Zhenhua Pan, Tsuyoshi Takata, Mamiko Nakabayashi, Naoya ShibataAbstract:Photocatalytic water splitting using particulate semiconductors is a potentially scalable and economically feasible technology for converting solar Energy into Hydrogen. Z-scheme systems based on two-step photoexcitation of a Hydrogen evolution photocatalyst (HEP) and an oxygen evolution photocatalyst (OEP) are suited to harvesting of sunlight because semiconductors with either water reduction or oxidation activity can be applied to the water splitting reaction. However, it is challenging to achieve efficient transfer of electrons between HEP and OEP particles. Here, we present photocatalyst sheets based on La- and Rh-codoped SrTiO3 (SrTiO3:La, Rh; ref. ) and Mo-doped BiVO4 (BiVO4:Mo) powders embedded into a gold (Au) layer. Enhancement of the electron relay by annealing and suppression of undesirable reactions through surface modification allow pure water (pH 6.8) splitting with a solar-to-Hydrogen Energy conversion efficiency of 1.1% and an apparent quantum yield of over 30% at 419 nm. The photocatalyst sheet design enables efficient and scalable water splitting using particulate semiconductors.
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scalable water splitting on particulate photocatalyst sheets with a solar to Hydrogen Energy conversion efficiency exceeding 1
Nature Materials, 2016Co-Authors: Qian Wang, Takashi Hisatomi, Qingxin Jia, Hiromasa Tokudome, Miao Zhong, Chizhong Wang, Zhenhua Pan, Tsuyoshi Takata, Mamiko Nakabayashi, Naoya ShibataAbstract:Photocatalytic water splitting using semiconductors is attractive for converting solar Energy into Hydrogen. An efficient and scalable system based on particulate photocatalyst sheets is now shown to exhibit Energy conversion efficiency exceeding 1%. Photocatalytic water splitting using particulate semiconductors is a potentially scalable and economically feasible technology for converting solar Energy into Hydrogen1,2,3. Z-scheme systems based on two-step photoexcitation of a Hydrogen evolution photocatalyst (HEP) and an oxygen evolution photocatalyst (OEP) are suited to harvesting of sunlight because semiconductors with either water reduction or oxidation activity can be applied to the water splitting reaction4,5. However, it is challenging to achieve efficient transfer of electrons between HEP and OEP particles6,7. Here, we present photocatalyst sheets based on La- and Rh-codoped SrTiO3 (SrTiO3:La, Rh; ref. 8) and Mo-doped BiVO4 (BiVO4:Mo) powders embedded into a gold (Au) layer. Enhancement of the electron relay by annealing and suppression of undesirable reactions through surface modification allow pure water (pH 6.8) splitting with a solar-to-Hydrogen Energy conversion efficiency of 1.1% and an apparent quantum yield of over 30% at 419 nm. The photocatalyst sheet design enables efficient and scalable water splitting using particulate semiconductors.
