材料科学
电化学
阳极
电极
电池(电)
离子
碳纳米管
纳米技术
钠离子电池
纳米尺度
化学工程
物理化学
物理
热力学
功率(物理)
法拉第效率
化学
工程类
量子力学
作者
Simi Sui,Haonan Xie,Ming Liang,Bochao Chen,Chunyang Liu,Enzuo Liu,Biao Chen,Liying Ma,Junwei Sha,Naiqin Zhao
标识
DOI:10.1002/adfm.202110853
摘要
Abstract Constructing sodium‐ion battery anodes with efficient ion/electron transport and high cycling stability is significantly promising for applications but still remains challenging. Here, “three‐in‐one” multi‐level design is performed to develop a carbon‐coated phosphorous‐doped MoS 2 anchored on carbon nanotube paper (P‐MoS 2 @C/CNTP). The Na + diffusion and electron transport, as well as the structural stability of the whole anode are simultaneously enhanced through the synergistically optimization of P‐MoS 2 @C/CNTP at atomic, nanoscopic, and macroscopic levels. Resulted from the multi‐level modification, the synergetic mechanism has been demonstrated by electrochemical measurement and theoretical calculation. As a result, the free‐standing P‐MoS 2 @C/CNTP anode presents a high rate performance (150 mA h g −1 at 5 A g −1 ) and a long cycling life (1 A g −1 , 1200 cycles, 249 mA h g −1 ). This work provides a new approach to the design and fabrication of high‐performance conversion‐type electrode materials for rechargeable batteries application.
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