石墨烯
阳极
材料科学
锂(药物)
氧化物
化学工程
电化学
碳纤维
复合数
电极
复合材料
纳米技术
化学
冶金
医学
工程类
内分泌学
物理化学
作者
Jing Shang,Miaomiao Mao,Mingjun Pang,Jie Song,Min Pang,Zhaoyang Song,Ruxia Zhang,Qianqian Wang,Jun Zhao
标识
DOI:10.1016/j.jallcom.2023.172206
摘要
Carbon-coating nitrogen all-doped Co9S8/Co4S3 nanoparticles attached to reduced graphene oxide sheets (N-CS@C/G) was developed by an eco-friendly in situ methodology in this study. Glucose-derived carbon nano-wrapped layers and supported reduced graphene oxide were employed to develop a highly conductive network, whereas N dopants, Co9S8 and Co4S3 supplied additional electrochemical active sites for lithium-ion energy storage. The well-designed hetero-structured N-CS@C/G electrode with a specific surface area of 101.29 m2g−1 can contribute to notably improving the volume variation and raising electrical conductivity. Under the N-CS@C/G composites with the improved synergistic effect that served as anode, the cell exhibited progressive cycle stability of 662 mA h g−1 at 2 A g−1 when 600 cycles were completed, the high specific capacity of 1039.7 mA h g−1 at 0.05 A g−1, as well as prominent rate capability, outperforming the parallel comparison materials without the addition of glucose (N-CS) or reduced graphene oxide (N-CS@C). This study is likely to develop a distinctive avenue to produce quick and high-capacity metal sulfide anodes and boot high-performance lithium-ion batteries.
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