Modification of graphite felt with Ga<sub>2</sub>O<sub>3 </sub>in vanadium redox flow battery

LI Chenfei; WANG Shubo; XIE Xiaofeng; ZHANG Jianwen

doi:10.11949/j.issn.0438-1157.20150318

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Modification of graphite felt with Ga₂O₃in vanadium redox flow battery

更新时间：2025-12-10

- Modification of graphite felt with Ga₂O₃in vanadium redox flow battery
- CIESC Journal Issue S1, Pages: 277-281(2015)
- 作者机构：
  
  1. 北京化工大学流体力学与传热研究室,北京,100029
  2. 清华大学核能与新能源技术研究院,北京,100084
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20150318
  CLC： Q152
- Online First：30 June 2015，
  
  Published：30 June 2015
- 稿件说明：
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LI Chenfei, WANG Shubo, XIE Xiaofeng, et al. Modification of graphite felt with Ga₂O₃in vanadium redox flow battery[J]. CIESC Journal, 2015, (S1): 277-281. DOI: 10.11949/j.issn.0438-1157.20150318.
DOI：

LI Chenfei, WANG Shubo, XIE Xiaofeng, et al. Modification of graphite felt with Ga₂O₃in vanadium redox flow battery[J]. CIESC Journal, 2015, (S1): 277-281. DOI: 10.11949/j.issn.0438-1157.20150318. DOI：

摘要

为提高全钒液流电池石墨毡电极的电化学性能

采用热分解法将纳米Ga2O3沉积在全钒液流电池石墨毡电极表面。通过循环伏安测试、动电位极化曲线测试、扫描电镜测试(SEM)、X射线光电子能谱分析(XPS)和充放电实验考察了Ga2O3对石墨毡电化学性能和表面形貌的影响。研究结果表明:Ga2O3对电极反应具有显著的催化作用

当用Ga2O3电极修饰石墨毡时

电池正负极反应活性较未处理前分别提高13%和18%

同时也导致全钒液流电池的容量更大

电流效率和能量效率更高。

Abstract

To improve the electrochemical activities of graphite felt (GF) electrodes of all vanadium flow battery (VRB)

nano-Ga2O3 were deposited on the surface of graphite felt (GF) electrode in an VRB using thermal decomposition. Electrochemical performance and morphology of GF were studied by cyclic voltammetry (CV)

polarization curves

scanning electron microscopy (SEM)

X-ray photoelectron spectroscopy (XPS) and charge-discharge test. The results showed that Ga2O3 has catalytic effects towards redox reaction of the electrode

when modifying the GF with Ga2O3

the anodic and cathodic reactivity of the VRB were increased by 13% and 18% compared with pristine one

while the battery exhibited higher capacity

current efficiency and energy efficiency.

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Modification of graphite felt with Ga2O3 in vanadium redox flow battery

DOI：10.11949/j.issn.0438-1157.20150318

摘要

Abstract

关键词

Keywords

references

Modification of graphite felt with Ga₂O₃in vanadium redox flow battery