标题:Phenolic resin-based carbon microspheres for potassium ion storage
作者:Wang, Shuo; Li, Yanyan; Ma, Fanteng; Wu, Xiaozhong; Zhou, Pengfei; Miao, Zhichao; Gao, Peibo; Zhuo, Shuping; Zhou, Jin
作者机构:[Wang, Shuo; Li, Yanyan; Ma, Fanteng; Wu, Xiaozhong; Zhou, Pengfei; Miao, Zhichao; Zhuo, Shuping; Zhou, Jin] Shandong Univ Technol, Sch Chem & Chem En 更多
通讯作者:Zhou, Jin;Zhou, J
通讯作者地址:[Zhou, J]Shandong Univ Technol, Sch Chem & Chem Engn, Zibo 255049, Peoples R China.
来源:APPLIED SURFACE SCIENCE
出版年:2020
卷:506
DOI:10.1016/j.apsusc.2019.144805
关键词:Carbon electrode; Potassium ion batteries; Potassium ions storage;; N-doping; Crystallite size
摘要:Potassium ion batteries (PIBs) have received widespread attention nearly four years due to sufficient potassium resources and similar chemical properties of potassium to lithium. Several works reported that N-doping on the carbon electrodes could efficiently improve the storage capacity of potassium ions. Herein, we synthesized two series of carbon spheres with the main difference is with or without N-doping. It is found that the storage of potassium ions is mainly determined by the crystal structure instead of N-doping. N-doping seems to affect the ion diffusion process, but the total capacity is still determined by the (0 0 2) lateral size of the carbon materials (L-a). The specific capacity increases as L-a increases. The N-doped carbon sphere with larger L-a of 8.32 nm, delivers a higher reversible capacity of 241 mAh g(-1) at a current density of 25 mA g(-1). And it still remains 121 mAh g(-1) after 100 cycles at a current density of 100 mA g(-1).
收录类别:EI;SCOPUS;SCIE
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85076239943&doi=10.1016%2fj.apsusc.2019.144805&partnerID=40&md5=8941c229635bd7e12174fa0a28a17736
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