The Experts below are selected from a list of 56133 Experts worldwide ranked by ideXlab platform

Maximilian Fichtner - One of the best experts on this subject based on the ideXlab platform.

Xiangyu Zhao - One of the best experts on this subject based on the ideXlab platform.

  • Chloride Ion-doped polyaniline/carbon nanotube nanocomposite materials as new cathodes for Chloride Ion battery
    Electrochimica Acta, 2018
    Co-Authors: Zhigang Zhao, Yingchun Miao, Xiangyu Zhao
    Abstract:

    Abstract Finding and optimizing the appropriate cathode materials in the electrolyte are critical to the development of Chloride Ion batteries. Herein, Chloride Ion-doped polyaniline/carbon nanotubes (PANI/CNTs) composite materials, which were prepared by an in situ chemical oxidative polymerizatIon method using FeCl3·6H2O as the oxidant, have been developed as new cathodes for Chloride Ion battery. The PANI/CNTs cathode showed reversible electrochemical energy storage through redox reactIons of nitrogen species and Chloride Ion transfer, as confirmed by the results of the electrochemical testing and X-ray photoelectron spectroscopy. The structural configuratIon of PANI by the incorporatIon of conductive CNT carrier contributed to significant improvement in the electrochemical properties. More than 80 mAh g−1 stable capacity and a high Coulombic efficiency of about 99% were delivered. This work offers a promising strategy for designing Chloride Ion storage electrode and novel electrochemical systems.

  • Developing Polymer Cathode Material for the Chloride Ion Battery
    ACS applied materials & interfaces, 2017
    Co-Authors: Xiangyu Zhao, Meng Yang, Zhigang Zhao, Hui Xia, Xiaodong Shen
    Abstract:

    The Chloride Ion battery is an attractive rechargeable battery owing to its high theoretical energy density and sustainable components. An important challenge for research and development of Chloride Ion batteries lies in the innovatIon of the cathode materials. Here we report a nanostructured Chloride Ion-doped polymer, polypyrrole Chloride, as a new type of potential cathode material for the Chloride Ion battery. The as-prepared polypyrrole Chloride@carbon nanotubes (PPyCl@CNTs) cathode shows a high reversible capacity of 118 mAh g-1 and superior cycling stability. Reversible electrochemical reactIons of the PPyCl@CNTs cathode based on the redox reactIons of nitrogen species and Chloride Ion transfer are demonstrated. Our work may guide and offer electrode design principles for accelerating the development of rechargeable batteries with anIon transfer.

  • Carbon incorporatIon effects and reactIon mechanism of FeOCl cathode materials for Chloride Ion batteries
    Scientific Reports, 2016
    Co-Authors: Xiangyu Zhao, Karin Fink, Tingting Yu, Qiang Li, Meng Yang, Xiaodong Shen
    Abstract:

    Metal oxyChlorides are proved to be new cathode materials for Chloride Ion batteries. However, this kind of cathode materials is still in a very early stage of research and development. The obtained reversible capacity is low and the electrochemical reactIon mechanism concerning Chloride Ion transfer is not clear. Herein, we report FeOCl/carbon composites prepared by mechanical milling of the as-prepared FeOCl with carbon nanotube, carbon black or graphene nanoplatelets as cathode materials for Chloride Ion batteries. The electrochemical performance of the FeOCl electrode is evidently improved by the incorporatIon of graphene into the cathode. FeOCl/graphene cathode shows a high reversible capacity of 184 mAh g -1 based on the phase transformatIon between FeOCl and FeO. Two stages of this phase transformatIon are observed for the FeOCl cathode. New insight into the reactIon mechanism of Chloride Ion dissociatIon of FeOCl is investigated by DFT + U + D2 calculatIons.

  • magnesium anode for Chloride Ion batteries
    ACS Applied Materials & Interfaces, 2014
    Co-Authors: Xiangyu Zhao, Karin Fink, Xiaodong Shen, Ping Gao, Zhirong Zhaokarger, Maximilian Fichtner
    Abstract:

    A key advantage of Chloride Ion battery (CIB) is its possibility to use abundant electrode materials that are different from those in Li Ion batteries. Mg anode is presented as such a material for the first time and Mg/C composite prepared by ball milling of Mg and carbon black powders or thermally decomposed MgH2/C composite has been tested as anode for CIB. The electrochemical performance of FeOCl/Mg and BiOCl/Mg was investigated, demonstrating the feasibility of using Mg as anode.

  • metal oxyChlorides as cathode materials for Chloride Ion batteries
    ChemInform, 2014
    Co-Authors: Xiangyu Zhao, Di Wang, Zhirong Zhaokarger, Maximilian Fichtner
    Abstract:

    The electrochemical performance and the reactIon mechanisms of BiOCl and FeOCl cathodes for Chloride Ion batteries are investigated.

Xiaodong Shen - One of the best experts on this subject based on the ideXlab platform.

  • Developing Polymer Cathode Material for the Chloride Ion Battery
    ACS applied materials & interfaces, 2017
    Co-Authors: Xiangyu Zhao, Meng Yang, Zhigang Zhao, Hui Xia, Xiaodong Shen
    Abstract:

    The Chloride Ion battery is an attractive rechargeable battery owing to its high theoretical energy density and sustainable components. An important challenge for research and development of Chloride Ion batteries lies in the innovatIon of the cathode materials. Here we report a nanostructured Chloride Ion-doped polymer, polypyrrole Chloride, as a new type of potential cathode material for the Chloride Ion battery. The as-prepared polypyrrole Chloride@carbon nanotubes (PPyCl@CNTs) cathode shows a high reversible capacity of 118 mAh g-1 and superior cycling stability. Reversible electrochemical reactIons of the PPyCl@CNTs cathode based on the redox reactIons of nitrogen species and Chloride Ion transfer are demonstrated. Our work may guide and offer electrode design principles for accelerating the development of rechargeable batteries with anIon transfer.

  • Carbon incorporatIon effects and reactIon mechanism of FeOCl cathode materials for Chloride Ion batteries
    Scientific Reports, 2016
    Co-Authors: Xiangyu Zhao, Karin Fink, Tingting Yu, Qiang Li, Meng Yang, Xiaodong Shen
    Abstract:

    Metal oxyChlorides are proved to be new cathode materials for Chloride Ion batteries. However, this kind of cathode materials is still in a very early stage of research and development. The obtained reversible capacity is low and the electrochemical reactIon mechanism concerning Chloride Ion transfer is not clear. Herein, we report FeOCl/carbon composites prepared by mechanical milling of the as-prepared FeOCl with carbon nanotube, carbon black or graphene nanoplatelets as cathode materials for Chloride Ion batteries. The electrochemical performance of the FeOCl electrode is evidently improved by the incorporatIon of graphene into the cathode. FeOCl/graphene cathode shows a high reversible capacity of 184 mAh g -1 based on the phase transformatIon between FeOCl and FeO. Two stages of this phase transformatIon are observed for the FeOCl cathode. New insight into the reactIon mechanism of Chloride Ion dissociatIon of FeOCl is investigated by DFT + U + D2 calculatIons.

  • magnesium anode for Chloride Ion batteries
    ACS Applied Materials & Interfaces, 2014
    Co-Authors: Xiangyu Zhao, Karin Fink, Xiaodong Shen, Ping Gao, Zhirong Zhaokarger, Maximilian Fichtner
    Abstract:

    A key advantage of Chloride Ion battery (CIB) is its possibility to use abundant electrode materials that are different from those in Li Ion batteries. Mg anode is presented as such a material for the first time and Mg/C composite prepared by ball milling of Mg and carbon black powders or thermally decomposed MgH2/C composite has been tested as anode for CIB. The electrochemical performance of FeOCl/Mg and BiOCl/Mg was investigated, demonstrating the feasibility of using Mg as anode.

Min-hong Zhang - One of the best experts on this subject based on the ideXlab platform.

  • water absorptIon permeability and resistance to Chloride Ion penetratIon of lightweight aggregate concrete
    Construction and Building Materials, 2011
    Co-Authors: Kok Seng Chia, Min-hong Zhang
    Abstract:

    This paper presents an experimental study to evaluate effect of cumulative lightweight aggregate (LWA) content (including lightweight sand) in concrete [water/cement ratio (w/c) = 0.38] on its water absorptIon, water permeability, and resistance to Chloride-Ion penetratIon. Rapid Chloride penetrability test (ASTM C 1202), rapid migratIon test (NT Build 492), and salt ponding test (AASHTO T 259) were conducted to evaluate the concrete resistance to Chloride-Ion penetratIon. The results were compared with those of a cement paste and a control normal weight aggregate concrete (NWAC) with the same w/c and a NWAC (w/c = 0.54) with 28-day compressive strength similar to some of the lightweight aggregate concrete (LWAC). Results indicate that although the total charge passed, migratIon coefficient, and diffusIon coefficient of the LWAC were not significantly different from those of NWAC with the same w/c of 0.38, resistance of the LWAC to Chloride penetratIon decreased with increase in the cumulative LWA content in the concretes. The water penetratIon depth under pressure and water sorptivity showed, in general, similar trends. The LWAC with only coarse LWA had similar water sorptivity, water permeability coefficient, and resistance to Chloride-Ion penetratIon compared to NWAC with similar w/c. The LWAC had lower water sorptivity, water permeability and higher resistance to Chloride-Ion penetratIon than the NWAC with similar 28-day strength but higher w/c. Both the NWAC and LWAC had lower sorptivity and higher resistance to Chloride-Ion penetratIon than the cement paste with similar w/c.

  • development of lightweight concrete with high resistance to water and Chloride Ion penetratIon
    Cement & Concrete Composites, 2010
    Co-Authors: Xuemei Liu, Kok Seng Chia, Min-hong Zhang
    Abstract:

    This paper presents an experimental study to evaluate the influence of coarse lightweight aggregate (LWA), fine LWA and the quality of the paste matrix on water absorptIon and permeability, and resistance to Chloride-Ion penetratIon in concrete. The results indicate that incorporatIon of pre-soaked coarse LWA in concrete increases water sorptivity and permeability slightly compared to normal weight concrete (NWC) of similar water-to-cementitious materials ratio (w/cm). Furthermore, resistance of the sand-lightweight concrete (LWC) to water permeability and Chloride-Ion penetratIon decreases with an increase in porosity of the coarse LWA. The use of fine LWA including a crushed fractIon <1.18 mm reduced resistance of the all-LWC to water and Chloride-Ion penetratIon compared with the sand-LWC which has the same coarse LWA. Overall, the quality of the paste matrix was dominant in controlling the transport properties of the concrete, regardless of porosity of the aggregates used. With low w/cm and silica fume, low unit weight LWC (1300 kg/m3) was produced with a higher resistance to water and Chloride-Ion penetratIon compared with NWC and LWC of higher unit weights. (A) Reprinted with permissIon from Elsevier.

Ping Gao - One of the best experts on this subject based on the ideXlab platform.

  • VOCl as a Cathode for Rechargeable Chloride Ion Batteries
    Angewandte Chemie (International ed. in English), 2016
    Co-Authors: Ping Gao, Zhirong Zhao-karger, M. Anji Reddy, Thomas Diemant, Le Zhang, Venkata Sai Kiran Chakravadhanula, Oliver Clemens, R. Jürgen Behm, Maximilian Fichtner
    Abstract:

    A novel room temperature rechargeable battery with VOCl cathode, lithium anode, and Chloride Ion transporting liquid electrolyte is described. The cell is based on the reversible transfer of Chloride Ions between the two electrodes. The VOCl cathode delivered an initial discharge capacity of 189 mAh g−1. A reversible capacity of 113 mAh g−1 was retained even after 100 cycles when cycled at a high current density of 522 mA g−1. Such high cycling stability was achieved in Chloride Ion batteries for the first time, demonstrating the practicality of the system beyond a proof of concept model. The electrochemical reactIon mechanism of the VOCl electrode in the Chloride Ion cell was investigated in detail by ex situ X-ray diffractIon (XRD), infrared spectroscopy (FTIR), transmissIon electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS). The results confirm reversible deintercalatIon–intercalatIon of Chloride Ions in the VOCl electrode.

  • magnesium anode for Chloride Ion batteries
    ACS Applied Materials & Interfaces, 2014
    Co-Authors: Xiangyu Zhao, Karin Fink, Xiaodong Shen, Ping Gao, Zhirong Zhaokarger, Maximilian Fichtner
    Abstract:

    A key advantage of Chloride Ion battery (CIB) is its possibility to use abundant electrode materials that are different from those in Li Ion batteries. Mg anode is presented as such a material for the first time and Mg/C composite prepared by ball milling of Mg and carbon black powders or thermally decomposed MgH2/C composite has been tested as anode for CIB. The electrochemical performance of FeOCl/Mg and BiOCl/Mg was investigated, demonstrating the feasibility of using Mg as anode.