标题:Carbon nanotube-stabilized Co9S8 dual-shell hollow spheres for high-performance K-ion storage
作者:Zhou, Jie; Zhao, Haoyu; Zhang, Qianliang; Li, Tieqiang; Li, Yang; Lin, Ning; Qian, Yitai
作者机构:[Zhou, Jie; Zhao, Haoyu; Li, Tieqiang; Li, Yang; Lin, Ning; Qian, Yitai] Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Dept Chem, Hefe 更多
通讯作者:Lin, N
通讯作者地址:[Lin, N]Univ Sci & Technol China, Hefei Natl Lab Phys Sci Microscale, Dept Chem, Hefei 230026, Anhui, Peoples R China.
来源:CHEMICAL COMMUNICATIONS
出版年:2019
卷:55
期:10
页码:1406-1409
DOI:10.1039/c8cc09205b
摘要:In this work, carbon nanotube-coated dual-shell Co9S8 hollow spheres are studied as anode materials for K-ion batteries. The unique hollow structure and carbon nanotubes synergistically enhance the conductivity and resolve the critical drawbacks of Co9S8 electrodes, including large volume variation, structural instability and interfacial changes. Thus, the electrode delivers a stable reversible capacity of 320.5 mA h g(-1) at 0.1 A g(-1) after 200 cycles with a capacity retention of 91%. At 1.0 A g(-1), the capacity is 163.9 mA h g(-1) after 1000 cycles with a capacity retention of 73.6%. An investigation of the electrode reaction mechanism indicates that the surface capacity also contributes to the outstanding electrochemical performance.
收录类别:SCOPUS;SCIE
Scopus被引频次:1
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85060660863&doi=10.1039%2fc8cc09205b&partnerID=40&md5=cd9e7b9f32bf8d47ffe90f9f8b5225db
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