PVDF-assisted pyrolysis strategy for corrugated plate oxygen electrocatalysis nanoreactor:Simultaneously realizing efficient active sites and rapid mass transfer  

作　　者：Chenxi Xu Liang Chen Haihui Zhou Shifeng Qin Zhaohui Hou Yangyang Chen Jiale Sun Junwei Xu Zhongyuan Huang 

机构地区：[1]Cllege of Chemistry and Chemical Engineering,Hunan University,Changsha 410082,Hunan,China [2]Key Laboratory of Hunan Province for Advanced Carbon-based Functional Materials,School of Chemistry and Chemical Engineering,Hunan Institute of Science and Technology,Yueyang 414006,Hunan,China [3]College of Materials Science and Technology,Central South University of Forestry and Technology,Changsha 410004,Hunan,China

出　　处：《Journal of Energy Chemistry》2024年第10期612-621,I0013,共11页能源化学（英文版）

基　　金：supported by the National Natural Science Foundation of China (No.21908049,52274298,and 51974114);Hunan Provincial Natural Science Foundation of China (No.2022JJ40035,2020JJ4175,2024JJ4022,2023JJ30277);Science and Technology Talents Lifting Project of Hunan Province (No.2022TJ-N16);Open Fund of State Key Laboratory of Advanced Metallurgy,University of Science and Technology Beijing (K1:24-09);Postdoctoral Fellowship Program (No.GZC20233205)。

摘　　要：Though Zn-air batteries(ZABs)are one of the most promising system for energy storage and conversion,challenge still persists in its commercial application due to the sluggish kinetics of oxygen reduction/evolution reaction(ORR/OER).Hereby,a polyvinylidene fluoride(PVDF)-assisted pyrolysis strategy is proposed to develop a novel corrugated plate-like bifunctional electrocatalyst using two-dimensional zeolitic imidazolate frameworks(2D ZIF-67)as the precursor.The employed PVDF plays an important role in inheriting the original 2D structure of ZIF-67 and modulating the composition of the final products.As a result,a corrugated plate-like electrocatalyst,high-density Co nanoparticles decorated 2D Co,N,and F tri-doped carbon nanosheets,can be obtained.The acquired electrocatalyst enables efficient active sites and rapid mass transfer simultaneously,thus showing appreciable electrocatalytic performance for rechargeable Zn-air batteries.Undoubtedly,our proposed strategy offers a new perspective to the design of advanced oxygen electrocatalysts.

关 键 词：Active sites Mass transfer Corrugated plate Oxygen electrocatalyst Zn-air batteries 

分 类 号：TQ426[化学工程] TM911.41[电气工程—电力电子与电力传动]