Phosphorus and oxygen co-doped composite electrode with hierarchical electronic and ionic mixed conducting networks for vanadium redox flow batteries

2019 ◽  
Vol 55 (77) ◽  
pp. 11515-11518 ◽  
Author(s):  
Wei Ling ◽  
Zhi-An Wang ◽  
Qiang Ma ◽  
Qi Deng ◽  
Jian-Feng Tang ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Electrocatalytic Activity ◽  
Composite Electrode ◽  
Rate Capability ◽  
Ion Conduction ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Conducting Networks ◽  
Vanadium Redox ◽  
Co Doped

The GF-TCN electrodes with excellent electrocatalytic activity and faster electron/ion conduction indicate outstanding rate capability and energy efficiency of VRFBs.

scholarly journals A three-dimensional conducting network of rGO-in-graphite-felt as electrode for vanadium redox flow batteries

2018 ◽  
Vol 4 (1) ◽  
pp. 60-65
Author(s):  
Hongrui Wang ◽  
Wei Ling ◽  
Jizhong Chen ◽  
Zhian Wang ◽  
Xian-Xiang Zeng ◽  
...  
Keyword(s):  
Electrocatalytic Activity ◽  
Three Dimensional ◽  
Rate Capability ◽  
Step Method ◽  
Graphite Felt ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
First Results ◽  
Electrochemical Charge Transfer ◽  
Vanadium Redox

AbstractGraphite felt (GF) with numerous merits has been widely used as electrode in all-vanadium redox flow batteries (VRFB), but its further application is still hindered by its intrinsically poor electrocatalytic activity. Herein, we propose a three-dimensional (3D) conducting network constructed with reduced graphene oxide (rGO) in the GF electrode via a two-step method. The 3D conducting network with abundant oxygen-containing functional groups in the GF is conducive to the transport of electrons between GF fibers and the electrochemical charge transfer to vanadium ions in the composite electrode; it can enhance the electrocatalytic activity and conductivity of GF. The VRFB using 3D rGO modified GF (mGF) electrode exhibited outstanding energy efficiency of 73.4% at a current density of 100 mA·cm−2, which is much higher than that with pristine GF (pGF) (65.4%); and better rate capability. These first results reveal that GF with 3D conducting network shows promising opportunities for the VRFB and other electrochemical flow systems

A high-performance ammonia plasma-treated WO3@carbon felt electrode for vanadium redox flow batteries

2021 ◽  
Author(s):  
Weizhe Xiang ◽  
Jian Xu ◽  
Yiqiong Zhang ◽  
Hu Fu ◽  
Xiaobo Zhu ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Active Sites ◽  
High Performance ◽  
Cost Effective ◽  
Composite Electrodes ◽  
Carbon Felt ◽  
Redox Flow Batteries ◽  
Ammonia Plasma ◽  
Flow Batteries ◽  
Vanadium Redox

Due to the pressing need for harnessing renewable energy, sizable energy storage technologies have become increasingly critical, among which vanadium redox flow batteries (VRFBs) are considered as one of the promising technologies. However, the lack of high-performance electrodes hinders the development of VRFBs. Herein, we report a new ammonia plasma-treated WO3@carbon felt as a high-performance electrode for VRFBs. The ammonia plasma introduces not only N-contained functional groups but also oxygen deficiencies on WO3, which provide additional active sites and improve the conductivity, leading to high catalysis for both cathodic and anodic vanadium redoxes. As a result, the energy efficiency and the power density of the VRFB increase from 78.9% to 86% and from 365.5 mWcm[Formula: see text] to 389.6 mWcm[Formula: see text], respectively. Moreover, the energy efficiency of composite electrodes remains stable for more than 300 cycles. This study provides a new strategy for designing cost-effective, environmentally friendly, and high-performance electrodes for future VRFBs.

Superior Electrocatalytic Activity of a Robust Carbon-Felt Electrode with Oxygen-Rich Phosphate Groups for All-Vanadium Redox Flow Batteries

ChemSusChem ◽  
2016 ◽  
Vol 9 (11) ◽  
pp. 1329-1338 ◽  
Author(s):  
Ki Jae Kim ◽  
Heon Seong Lee ◽  
Jeonghun Kim ◽  
Min-Sik Park ◽  
Jung Ho Kim ◽  
...  
Keyword(s):  
Electrocatalytic Activity ◽  
Carbon Felt ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Carbon Felt Electrode ◽  
Vanadium Redox ◽  
Phosphate Groups

A High-Performance Composite Electrode for Vanadium Redox Flow Batteries

2017 ◽  
Vol 7 (18) ◽  
pp. 1700461 ◽  
Author(s):  
Qi Deng ◽  
Peng Huang ◽  
Wen-Xin Zhou ◽  
Qiang Ma ◽  
Nan Zhou ◽  
...  
Keyword(s):  
High Performance ◽  
Composite Electrode ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
High Performance Composite ◽  
Vanadium Redox

Salt-templated porous carbon–carbon composite electrodes for application in vanadium redox flow batteries

2017 ◽  
Vol 5 (48) ◽  
pp. 25193-25199 ◽  
Author(s):  
Maike Schnucklake ◽  
Sophie Kuecken ◽  
Abdulmonem Fetyan ◽  
Johannes Schmidt ◽  
Arne Thomas ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Composite Electrode ◽  
Carbon Composite ◽  
Composite Electrodes ◽  
Templating Method ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Vanadium Redox

Investigation of a newly developed IL-derived composite electrode, synthesized via the salt templating method for utilization in vanadium redox flow batteries.

Decorating sulfur and nitrogen co-doped graphene quantum dots on graphite felt as high-performance electrodes for vanadium redox flow batteries

2020 ◽  
Vol 477 ◽  
pp. 228709
Author(s):  
Michael C. Daugherty ◽  
Siyong Gu ◽  
Doug S. Aaron ◽  
Bikash Chandra Mallick ◽  
Yasser Ashraf Gandomi ◽  
...  
Keyword(s):  
Quantum Dots ◽  
High Performance ◽  
Graphene Quantum Dots ◽  
Graphite Felt ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Doped Graphene ◽  
Vanadium Redox ◽  
Co Doped
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