第一作者：Jiajing Wu

通讯作者：Qionglin Liang , Hong-Bin Sun

合写作者：Jianghua Zhang , Yongjian Ai , Jifan Li , Xinyue Zhang , Ze-Nan Hu , He Wang

发表刊物：Nanotechnology

期号：8

卷号：31

影响因子：2.9

DOI码：10.1088/1361-6528/ab5477

所属单位：Department of Chemistry, Northeastern University

教研室：物理化学

刊物所在地：ENGLAND

摘要：Currently, the design of carbon-based composite as a high-performance anode material for lithium-ion batteries (LIBs) presents challenges for commercial application. Herein, we developed a three-dimensional carbon-based material with a nanotube-sheet mutual support structure (MS-CNTS) engineered by the catalytic effect of Co species. The present work highlights a concise 'solvent-free' synthetic method allowing for large-scale output, which is potentially available for low cost commercial use. With the readily available acetylacetonate and cobalt (II) acetylacetonate as starting chemicals, this nanostructured carbonaceous material is fabricated with aldol condensation to construct a Co-contained carbon-link network polymer precursor followed by annealing under argon. It is composed of brim-curled graphene-like carbon nanosheets and carbon nanotubes, which support each other's structures to effectively avoid agglomeration. Therefore, it enables high performance in LIBs. In spite of the trace amount of cobalt, the carbon-based MS-CNTS anode delivers a high charge capacity of 1028 mAh g(-1) at 0.1 A g(-1), high rate capacity of 495 mAh g(-1) at 2 A g(-1), and ultra-long cycling life with a very low capacity decay of 0.008% per cycle over 1000 cycles at 0.5 A g(-1), accompanied by 100% Coulombic efficiency. From full cell measurements, we further confirm the considerable promise of MS-CNTS as anodes with a long cycling life.

关键字：lithium-ion battery, carbon nanotube, carbon nanosheet, scalable synthesis, solvent free

论文编号：WOS:000505735300002

学科门类：理学

一级学科：化学

页面范围：085402

ISSN号：0957-4484

是否译文：否