材料科学
阳极
复合数
锂(药物)
化学工程
锂离子电池
碳纤维
电池(电)
正交晶系
电化学
纳米技术
复合材料
电极
晶体结构
有机化学
物理
工程类
内分泌学
物理化学
功率(物理)
化学
医学
量子力学
作者
Sumit Ranjan Sahu,Vallabha Rao Rikka,Prathap Haridoss,Abhijit Chatterjee,R. Gopalan,Raju Prakash
标识
DOI:10.1002/aenm.202001627
摘要
Abstract Orthorhombic α‐MoO 3 is a potential anode material for lithium‐ion batteries due to its high theoretical capacity of 1100 mAh g −1 and excellent structural stability. However, its intrinsic poor electronic conductivity and high volume expansion during the charge–discharge process impede it from achieving a high practical capacity. A novel composite of α‐MoO 3 nanobelts and single‐walled carbon nanohorns (SWCNHs) is synthesized by a facile microwave hydrothermal technique and demonstrated as a high‐performance anode material for lithium‐ion batteries. The α‐MoO 3 /SWCNH composite displays superior electrochemical properties (654 mAh g −1 at 1 C), excellent rate capability (275 mAh g −1 at 5 C), and outstanding cycle life (capacity retention of >99% after 3000 cycles at 1 C) without any cracking of the electrode. The presence of SWCNHs in the composite enhances the electrochemical properties of α‐MoO 3 by acting as a lithium storage material, electronic conductive medium, and buffer against pulverization.
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