重量分析
阳极
纳米孔
储能
多孔性
纳米颗粒
材料科学
纳米技术
碳纤维
化学工程
体积热力学
涂层
化学
复合材料
物理
电极
工程类
有机化学
复合数
量子力学
功率(物理)
物理化学
作者
Zhikun Hu,Zerui Chen,Qianqian Liu,Wei Zhao,Yifei Xu,Hao Bin Wu
出处
期刊:iScience
[Elsevier]
日期:2023-05-01
卷期号:26 (5): 106642-106642
被引量:2
标识
DOI:10.1016/j.isci.2023.106642
摘要
Sodium-ion batteries (SIBs) are promising candidates for large-scale energy storage. Increasing the energy density of SIBs demands anode materials with high gravimetric and volumetric capacity. To overcome the drawback of low density of conventional nanosized or porous electrode materials, compact heterostructured particles are developed in this work with improved Na storage capacity by volume, which are composed of SnO2 nanoparticles loaded into nanoporous TiO2 followed by carbon coating. The resulted TiO2@SnO2@C (denoted as TSC) particles inherit the structural integrity of TiO2 and extra capacity contribution from SnO2, delivering a volumetric capacity of 393 mAh cm−3 notably higher than that of porous TiO2 and commercial hard carbon. The heterogeneous interface between TiO2 and SnO2 is believed to promote the charge transfer and facilitate the redox reactions in the compact heterogeneous particles. This work demonstrates a useful strategy for electrode materials with high volumetric capacity.
科研通智能强力驱动
Strongly Powered by AbleSci AI