The Experts below are selected from a list of 57150 Experts worldwide ranked by ideXlab platform

Guoxiu Wang - One of the best experts on this subject based on the ideXlab platform.

  • 3d interconnected carbon fiber network enabled ultralong life na3v2 po4 3 carbon paper cathode for sodium ion batteries
    Small, 2017
    Co-Authors: Katja Kretschmer, Bing Sun, Jinqiang Zhang, Xiuqiang Xie, Hao Liu, Guoxiu Wang
    Abstract:

    Sodium-ion batteries (NIBs) are an emerging technology, which can meet increasing demands for large-scale Energy Storage. One of the most promising cathode material candidates for sodium-ion batteries is Na3V2(PO4)3 due to its high capacity, thermal stability, and sodium (Na) Superionic Conductor 3D (NASICON)-type framework. In this work, the authors have significantly improved electrochemical performance and cycling stability of Na3V2(PO4)3 by introducing a 3D interconnected conductive network in the form of carbon fiber derived from ordinary paper towel. The free-standing Na3V2(PO4)3-carbon paper (Na3V2(PO4)3@CP) hybrid electrodes do not require a metallic current collector, polymeric binder, or conducting additives to function as a cathode material in an NIB system. The Na3V2(PO4)3@CP cathode demonstrates extraordinary long term cycling stability for 30 000 deep charge–discharge cycles at a current density of 2.5 mA cm−2. Such outstanding cycling stability can meet the stringent requirements for Renewable Energy Storage.

  • 3D Interconnected Carbon Fiber Network‐Enabled Ultralong Life Na3V2(PO4)3@Carbon Paper Cathode for Sodium‐Ion Batteries
    Small, 2016
    Co-Authors: Katja Kretschmer, Bing Sun, Jinqiang Zhang, Xiuqiang Xie, Hao Liu, Guoxiu Wang
    Abstract:

    Sodium-ion batteries (NIBs) are an emerging technology, which can meet increasing demands for large-scale Energy Storage. One of the most promising cathode material candidates for sodium-ion batteries is Na3V2(PO4)3 due to its high capacity, thermal stability, and sodium (Na) Superionic Conductor 3D (NASICON)-type framework. In this work, the authors have significantly improved electrochemical performance and cycling stability of Na3V2(PO4)3 by introducing a 3D interconnected conductive network in the form of carbon fiber derived from ordinary paper towel. The free-standing Na3V2(PO4)3-carbon paper (Na3V2(PO4)3@CP) hybrid electrodes do not require a metallic current collector, polymeric binder, or conducting additives to function as a cathode material in an NIB system. The Na3V2(PO4)3@CP cathode demonstrates extraordinary long term cycling stability for 30 000 deep charge–discharge cycles at a current density of 2.5 mA cm−2. Such outstanding cycling stability can meet the stringent requirements for Renewable Energy Storage.

Yan Yu - One of the best experts on this subject based on the ideXlab platform.

  • boosting potassium ion battery performance by encapsulating red phosphorus in free standing nitrogen doped porous hollow carbon nanofibers
    Nano Letters, 2019
    Co-Authors: Shuhe Hu, Zhangquan Peng, Qiaobao Zhang, Yan Yu, Jiawei Wang, Rui Xu
    Abstract:

    Potassium-ion batteries (KIBs) are a promising alternative to lithium-ion batteries (LIBs) for large-scale Renewable Energy Storage owning to the natural abundance and low cost of potassium. However, the biggest challenge for KIBs application lies in the lack of suitable electrode materials that can deliver long cycle life and high reversible capacity. In this work, we realized unprecedented long cycle life with high reversible capacity (465 mAh g–1 at 2 A g–1 after 800 cycles) as well as outstanding rate capability (342 mAh g–1 at 5 A g–1) for KIBs by embedding red P into free-standing nitrogen-doped porous hollow carbon nanofibers (red P@N-PHCNFs). This design circumvents the problems of pulverization and aggregation of P particles. The in situ transmission electron microscopy (TEM) investigation reveals the structural robustness of the composite fibers during potassiation. The formation of P–C chemical bonds as well as nitrogen doping in the carbon matrix can facilitate the sturdy contact and enhance t...

  • electrospun na3v2 po4 3 c nanofibers as stable cathode materials for sodium ion batteries
    Nanoscale, 2014
    Co-Authors: Kun Tang, Yan Yu, Kepeng Song, Peter A Van Aken, Joachim Maier
    Abstract:

    Sodium-ion batteries are considered as prime alternatives to lithium-ion batteries for large-scale Renewable Energy Storage units due to their low cost and the abundance of sodium bearing precursors in the earth's mineral deposits. In the current work, a 3D NASICON framework Na3V2(PO4)3/carbon cathode electrode with 20–30 nm Na3V2(PO4)3 nanoparticles uniformly encapsulated interconnecting one-dimensional carbon nanofibers was fabricated using a simple and scalable electrospinning method. The Na3V2(PO4)3/C cathode showed an initial charge capacity of 103 mA h g−1 and a discharge capacity of 101 mA h g−1 (calculated on the total mass of Na3V2(PO4)3 and carbon) at 0.1C rate, and retained stable discharge capacities of 77, 58, 39 and 20 mA h g−1 at high current densities of 2C, 5C, 10C and 20C, respectively. Moreover, because of the efficient 1D sodium-ion transport pathway and the highly conductive network of Na3V2(PO4)3/C, the electrode exhibited high overall capacities even when cycled at high currents, extending its usability to high power applications.

Katja Kretschmer - One of the best experts on this subject based on the ideXlab platform.

  • 3d interconnected carbon fiber network enabled ultralong life na3v2 po4 3 carbon paper cathode for sodium ion batteries
    Small, 2017
    Co-Authors: Katja Kretschmer, Bing Sun, Jinqiang Zhang, Xiuqiang Xie, Hao Liu, Guoxiu Wang
    Abstract:

    Sodium-ion batteries (NIBs) are an emerging technology, which can meet increasing demands for large-scale Energy Storage. One of the most promising cathode material candidates for sodium-ion batteries is Na3V2(PO4)3 due to its high capacity, thermal stability, and sodium (Na) Superionic Conductor 3D (NASICON)-type framework. In this work, the authors have significantly improved electrochemical performance and cycling stability of Na3V2(PO4)3 by introducing a 3D interconnected conductive network in the form of carbon fiber derived from ordinary paper towel. The free-standing Na3V2(PO4)3-carbon paper (Na3V2(PO4)3@CP) hybrid electrodes do not require a metallic current collector, polymeric binder, or conducting additives to function as a cathode material in an NIB system. The Na3V2(PO4)3@CP cathode demonstrates extraordinary long term cycling stability for 30 000 deep charge–discharge cycles at a current density of 2.5 mA cm−2. Such outstanding cycling stability can meet the stringent requirements for Renewable Energy Storage.

  • 3D Interconnected Carbon Fiber Network‐Enabled Ultralong Life Na3V2(PO4)3@Carbon Paper Cathode for Sodium‐Ion Batteries
    Small, 2016
    Co-Authors: Katja Kretschmer, Bing Sun, Jinqiang Zhang, Xiuqiang Xie, Hao Liu, Guoxiu Wang
    Abstract:

    Sodium-ion batteries (NIBs) are an emerging technology, which can meet increasing demands for large-scale Energy Storage. One of the most promising cathode material candidates for sodium-ion batteries is Na3V2(PO4)3 due to its high capacity, thermal stability, and sodium (Na) Superionic Conductor 3D (NASICON)-type framework. In this work, the authors have significantly improved electrochemical performance and cycling stability of Na3V2(PO4)3 by introducing a 3D interconnected conductive network in the form of carbon fiber derived from ordinary paper towel. The free-standing Na3V2(PO4)3-carbon paper (Na3V2(PO4)3@CP) hybrid electrodes do not require a metallic current collector, polymeric binder, or conducting additives to function as a cathode material in an NIB system. The Na3V2(PO4)3@CP cathode demonstrates extraordinary long term cycling stability for 30 000 deep charge–discharge cycles at a current density of 2.5 mA cm−2. Such outstanding cycling stability can meet the stringent requirements for Renewable Energy Storage.

Stéphane Ginestet - One of the best experts on this subject based on the ideXlab platform.

  • modelling and experimental study of low temperature Energy Storage reactor using cementitious material
    Applied Thermal Engineering, 2017
    Co-Authors: Khadim Ndiaye, Stéphane Ginestet
    Abstract:

    Abstract Renewable Energy Storage is now essential to enhance the Energy performance of buildings and to reduce their environmental impact. Most adsorbent materials are capable of storing heat, in a large range of temperature. Ettringite, the main product of the hydration of sulfoaluminate binders, has the advantage of high Energy Storage density at low temperature, around 60 °C. The objective of this study is, first, to predict the behaviour of the ettringite based material in a thermochemical reactor during the heat Storage process, by heat Storage modelling, and then to perform experimental validation by tests on a prototype. A model based on the Energy and mass balance in the cementitious material was developed and simulated in MatLab software, and was able to predict the spatiotemporal behaviour of the Storage system. This helped to build a thermochemical reactor prototype for heat Storage tests in both the charging and discharging phases. Thus experimental tests validated the numerical model and served as proof of concept.

  • Modelling and experimental study of low temperature Energy Storage reactor using cementitious material
    Applied Thermal Engineering, 2017
    Co-Authors: Khadim Ndiaye, Stéphane Ginestet, Martin Cyr
    Abstract:

    Renewable Energy Storage is now essential to enhance the Energy performance of buildings and to reduce their environmental impact. Most adsorbent materials are capable of storing heat, in a large range of temperature. Ettringite, the main product of the hydration of sulfoaluminate binders, has the advantage of high Energy Storage density at low temperature, around 60 degrees C. The objective of this study is, first, to predict the behaviour of the ettringite based material in a thermochemical reactor during the heat Storage process, by heat Storage modelling, and then to perform experimental validation by tests on a prototype. A model based on the Energy and mass balance in the cementitious material was developed and simulated in MatLab software, and was able to predict the spatiotemporal behaviour of the Storage system. This helped to build a thermochemical reactor prototype for heat Storage tests in both the charging and discharging phases. Thus experimental tests validated the numerical model and served as proof of concept.

Hao Liu - One of the best experts on this subject based on the ideXlab platform.

  • 3d interconnected carbon fiber network enabled ultralong life na3v2 po4 3 carbon paper cathode for sodium ion batteries
    Small, 2017
    Co-Authors: Katja Kretschmer, Bing Sun, Jinqiang Zhang, Xiuqiang Xie, Hao Liu, Guoxiu Wang
    Abstract:

    Sodium-ion batteries (NIBs) are an emerging technology, which can meet increasing demands for large-scale Energy Storage. One of the most promising cathode material candidates for sodium-ion batteries is Na3V2(PO4)3 due to its high capacity, thermal stability, and sodium (Na) Superionic Conductor 3D (NASICON)-type framework. In this work, the authors have significantly improved electrochemical performance and cycling stability of Na3V2(PO4)3 by introducing a 3D interconnected conductive network in the form of carbon fiber derived from ordinary paper towel. The free-standing Na3V2(PO4)3-carbon paper (Na3V2(PO4)3@CP) hybrid electrodes do not require a metallic current collector, polymeric binder, or conducting additives to function as a cathode material in an NIB system. The Na3V2(PO4)3@CP cathode demonstrates extraordinary long term cycling stability for 30 000 deep charge–discharge cycles at a current density of 2.5 mA cm−2. Such outstanding cycling stability can meet the stringent requirements for Renewable Energy Storage.

  • 3D Interconnected Carbon Fiber Network‐Enabled Ultralong Life Na3V2(PO4)3@Carbon Paper Cathode for Sodium‐Ion Batteries
    Small, 2016
    Co-Authors: Katja Kretschmer, Bing Sun, Jinqiang Zhang, Xiuqiang Xie, Hao Liu, Guoxiu Wang
    Abstract:

    Sodium-ion batteries (NIBs) are an emerging technology, which can meet increasing demands for large-scale Energy Storage. One of the most promising cathode material candidates for sodium-ion batteries is Na3V2(PO4)3 due to its high capacity, thermal stability, and sodium (Na) Superionic Conductor 3D (NASICON)-type framework. In this work, the authors have significantly improved electrochemical performance and cycling stability of Na3V2(PO4)3 by introducing a 3D interconnected conductive network in the form of carbon fiber derived from ordinary paper towel. The free-standing Na3V2(PO4)3-carbon paper (Na3V2(PO4)3@CP) hybrid electrodes do not require a metallic current collector, polymeric binder, or conducting additives to function as a cathode material in an NIB system. The Na3V2(PO4)3@CP cathode demonstrates extraordinary long term cycling stability for 30 000 deep charge–discharge cycles at a current density of 2.5 mA cm−2. Such outstanding cycling stability can meet the stringent requirements for Renewable Energy Storage.