Polypyrrole as an ultrafast organic cathode for dual-ion batteries
作者机构：State Key Laboratory of Rare Earth Resource UtilizationChangchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022PR China National&Local United Engineering Laboratory for Power BatteriesFaculty of ChemistryNortheast Normal UniversityChangchunJilin130024PR China
出 版 物：《eScience》 (电化学与能源科学（英文）)
年 卷 期：2021年第1卷第2期
页 面：186-193页
学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学]
基 金：This work was financially supported by National Key R&D Program of China(2017YFA0206700) National Natural Science Foundation of China(21725103) K.C.Wong Education Foundation(GJTD-2018-09) Jilin Province Science and Technology Development Plan Funding Project(20200201079JC) Jilin Province Capital Construction Funds Project(2020C026-1)
主 题：Polypyrrole Organic electrode Conductive polymers Dual-ion batteries
摘 要：Organic electrode materials based on the chemical bond cleavage/recombination working principle usually produce unimpressive reaction kinetics and *** this work,polypyrrole(PPy)is investigated as an ultrafast(87%retention at 20 A g^(-1))and stable(83%retention across 3000 cycles)cathode material in PPy|graphite dualion *** fast intrinsic reaction kinetics,coupled with a capacitance-dominated mechanism,enable PPy to bypass the sluggish chemical bond rearrangement *** induced secondary doping improves the ordered aggregation of polymer chains and thus has a profound impact on anion diffusion and electrical *** excellent rate capability presented here changes our understanding of organic electrode materials and could prove useful for designing ultrafast rechargeable electrochemical devices.
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