二硫化钼
电化学
阳极
锂(药物)
材料科学
插层(化学)
碳纳米纤维
纳米纤维
储能
复合数
电极
化学工程
碳纤维
钼
纳米技术
石墨烯
无机化学
化学
碳纳米管
复合材料
冶金
内分泌学
工程类
物理化学
功率(物理)
物理
医学
量子力学
作者
Fei Zhou,Sen Xin,Hai‐Wei Liang,Liying Song,Shu‐Hong Yu
标识
DOI:10.1002/anie.201407103
摘要
Traditional lithium-ion batteries that are based on layered Li intercalation electrode materials are limited by the intrinsically low theoretical capacities of both electrodes and cannot meet the increasing demand for energy. A facile route for the synthesis of a new type of composite nanofibers, namely carbon nanofibers decorated with molybdenum disulfide sheets (CNFs@MoS2), is now reported. A synergistic effect was observed for the two-component anode, triggering new electrochemical processes for lithium storage, with a persistent oxidation from Mo (or MoS2) to MoS3 in the repeated charge processes, leading to an ascending capacity upon cycling. The composite exhibits unprecedented electrochemical behavior with high specific capacity, good cycling stability, and superior high-rate capability, suggesting its potential application in high-energy lithium-ion batteries.
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