钒
过电位
石墨
电极
碳纳米管
氧化还原
电解质
材料科学
碳纳米纤维
电化学
纳米纤维
纳米技术
储能
碳纤维
化学工程
复合材料
冶金
工程类
化学
物理
功率(物理)
物理化学
复合数
量子力学
作者
Minseong Kim,Jeongmok Park,Gyuchan Yeo,Minseong Ko,Haeseong Jang
出处
期刊:Carbon
[Elsevier]
日期:2023-03-01
卷期号:206: 1-6
被引量:6
标识
DOI:10.1016/j.carbon.2022.12.085
摘要
Carbon nanotubes/Carbon nanofibers (CNT/CNF), owing to their abundant active sites and high acidic resistance, have emerged as promising electrocatalysts for high-energy-density vanadium redox flow batteries (VRFB). However, the utilization of CNT/CNF has been obstructed owing to problems such as cost, and the detachment of CNT/CNF from the carbon electrode caused by the flowing electrolyte in VRFB. In this study, we proposed a novel strategy for uniformly implanted multiwall CNT in electrode materials such as graphite felt, for the development of efficient electron-networked electrodes. The weed root-like morphology of the electrode improved the charge transfer ability and minimized the increase in overpotential even after 1000 cycles of stability test. As a result, the electrode exhibited a high discharge capacity of 30.7 Ah·L−1 and an energy efficiency of 86.9%. Therefore, the proposed CNT implanted electrode can be used as an alternative design in practically feasible VRFB exhibiting sustainable electrochemical performance.
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