材料科学
阳极
电化学
钠离子电池
电极
化学工程
碳纤维
兴奋剂
纳米技术
电池(电)
复合材料
光电子学
复合数
法拉第效率
量子力学
物理
工程类
物理化学
功率(物理)
化学
作者
Weina Ren,Haifeng Zhang,Cao Guan,Chuanwei Cheng
标识
DOI:10.1002/adfm.201702116
摘要
This study reports the design and fabrication of ultrathin MoS 2 nanosheets@metal organic framework‐derived N‐doped carbon nanowall array hybrids on flexible carbon cloth (CC@CN@MoS 2 ) as a free‐standing anode for high‐performance sodium ion batteries. When evaluated as an anode for sodium ion battery, the as‐fabricated CC@CN@MoS 2 electrode exhibits a high capacity (653.9 mA h g −1 of the second cycle and 619.2 mA h g −1 after 100 cycles at 200 mA g −1 ), excellent rate capability, and long cycling life stability (265 mA h g −1 at 1 A g −1 after 1000 cycles). The excellent electrochemical performance can be attributed to the unique 2D hybrid structures, in which the ultrathin MoS 2 nanosheets with expanded interlayers can provide shortened ion diffusion paths and favorable Na + insertion/extraction space, and the porous N‐doped carbon nanowall arrays on flexible carbon cloth are able to improve the conductivity and maintain the structural integrity. Moreover, the N‐doping‐induced defects also make them favorable for the effective storage of sodium ions, which enables the enhanced capacity and rate performance of MoS 2 .
科研通智能强力驱动
Strongly Powered by AbleSci AI