材料科学
钒
氧化还原
催化作用
化学工程
吸附
电极
纳米技术
密度泛函理论
石墨
电化学
无机化学
有机化学
计算化学
化学
复合材料
物理化学
冶金
工程类
作者
Qiang Ma,Xian‐Xiang Zeng,Chen Zhou,Qingqing Deng,Peng Fei Wang,Tong‐Tong Zuo,Xudong Zhang,Ya‐Xia Yin,Xiongwei Wu,Liyuan Chai,Yu‐Guo Guo
标识
DOI:10.1021/acsami.8b04846
摘要
Highly catalytic electrodes play a vital role in exploiting the capability of vanadium redox flow batteries (VRFBs), but they suffer from a tedious synthesis process and ambiguous interaction mechanisms for catalytic sites. Herein, a facile urea pyrolysis process was applied to prepare graphitic carbon nitride-modified graphite felt (GF@CN), and by the virtue of a density functional theory-assisted calculation, the electron-rich pyridinic nitrogen atom of CN granules is demonstrated as the adsorption center for redox species and plays the key role in improving the performance of VRFBs, with 800 cycles and an energy efficiency of 75% at 150 mA cm-2. Such experimental and computational collaborative investigations guide a realizable and cost-effective solution for other high-power flow batteries.
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