储能科学与技术2024，Vol.13Issue(6)：1849-1860,12.DOI:10.19799/j.cnki.2095-4239.2023.0929
杂原子掺杂电极用于全钒液流电池中的研究进展
Research progress on heteroatom-doped electrodes used in all vanadium redox flow batteries
摘要
Abstract
Flow batteries are indispensable technologies for large-scale energy storage,owing to their inherent safety and exceptionally long lifespan.In all-vanadium redox flow batteries(VRFBs),the electrode material is a crucial component,as its interface characteristics with the electrolyte substantially influence battery performance.Surface modification methods applied to the electrode facilitate enhancements in electrochemical activity,particularly under high current density conditions.Currently,electrode surface heteroatom doping technology is a focal point of research.This study summarizes the mechanisms and research progress of heteroatom doping in graphite felt(GF),specifically emphasizing two doping strategies:in-situ doping within the carbon framework and utilizing heteroatom catalysts on the electrode surface.This study also comprehensively summarizes doping types and performance differences associated with these two strategies.It explains the principles of in-situ doping in electrode materials based on the electronegativity and atomic size of heteroatoms,along with discussing how heteroatoms affect the electronic structure of carbon fibers.Additionally,it introduces the impact patterns of three carbon-based catalysts—heteroatom-doped porous carbon materials,carbon nanotubes,and graphene—on the electrochemical performance of electrode materials.The comprehensive analysis indicates that heteroatom doping on the electrode surface can increase active sites for electrode reactions,promote the migration of active ions,improve hydrophilicity,and enlarge the effective contact area between the electrode and electrolyte.Furthermore,the study suggests adopting methods such as regulating the charge distribution on the electrode surface,varying functional group types,and constructing defect sites to effectively enhance electrode materials'stability and electrochemical performance,ultimately leading to increased electrochemical activity at high current densities and higher conductivity.关键词
全钒液流电池/电极/原子掺杂/杂原子催化Key words
vanadium redox flow battery/electrode/atomic doping/heteroatom catalyst分类
能源科技引用本文复制引用
徐冉,王宝冬,王绍亮,张琦,张磊,冯子洋..杂原子掺杂电极用于全钒液流电池中的研究进展[J].储能科学与技术,2024,13(6):1849-1860,12.基金项目
耦合储能与氢能的高比例可再生能源系统关键技术与路径研究(S930021052),规模储能储热关键技术研究及示范(S930021008). （S930021052）
