Hydro-thermal synthesis of SnO2@hard-carbon ultrafine composites for anodic performances in lithium-ion batteries
Hydro-thermal synthesis of SnO2@hard-carbon ultrafine composites for anodic performances in lithium-ion batteries
复制标题
水热合成SnO2@硬碳超细复合材料用于锂离子电池阳极性能
DOI：
10.1166/mex.2020.1832
复制
发表时间：
2020-10
影响因子：
0.7
通讯作者：
Zeng Taotao
中科院分区：
文献类型：
--
作者：
Li Lingfang;Fan Changling;Zhang Weihua;Zeng Taotao
纳米结构SnO2@HC复合材料的制备是开发先进的锂离子电池锡基负极材料的有效策略。本研究选择具有三维多层结构的纤维素作为硬碳源。的超细复合材料
Preparation of nano-structured SnO2@HC composites is an effective strategy to develop advanced tin-based anode materials for Li-ion batteries. In this study, cellulose with three-dimensional multi-layer structure was chosen as hard carbon source. An ultrafine composite of
SnO2 and hard carbon, SnO2@HC, was prepared by hydro-thermal method. X Ray Diffraction (XRD), Scanning Electron Microscope (SEM), Transmission Electron Microscope (TEM), X-ray Photoelectron Spectroscopy (XPS), N2 adsorption–desorption technique, and electrochemical
characterization were used to illustrate the microstructure, surface composition, pore features, and electrochemical performance of this composite. Results showed that in-situ growth of 3–5 nm SnO2 dots anchored on hard carbon particles formed a stable structure with abundant
micropores and mesopores, which showed its good rate and cycle performance. The capacity stabilized at about 300 mAh/g after 10 cycles, at the current density of 200 mA/g. For the composite with Sn4+ to C molar ratio of 0.2:1, the discharge capacity was greater than 600 mAh/g at
the current density of 50 mA/g, and 160 mAh/g capacity was released at 2 A/g.