阳极
材料科学
锡
锂(药物)
X射线光电子能谱
电化学
循环伏安法
重量分析
储能
阴极
化学工程
背景(考古学)
电极
化学
冶金
物理化学
有机化学
内分泌学
古生物学
功率(物理)
工程类
物理
生物
医学
量子力学
作者
Eldho Edison,Apoorva Chaturvedi,Hao Ren,Sivaramapanicker Sreejith,Chwee Teck Lim,Madhavi Srinivasan
出处
期刊:ACS applied energy materials
[American Chemical Society]
日期:2018-10-05
被引量:8
标识
DOI:10.1021/acsaem.8b01357
摘要
Novel materials with high lithium-storage capacities are indispensable to substantially increase the gravimetric and volumetric energy densities of lithium-ion batteries. In this context, metal thiophosphites (MTPs) possessing a layered structure are considered ideal candidates to serve as alkali-ion hosts. Herein, the lithium storage properties of layered tin thiophosphite (SnPS3) crystals have been investigated in coin-cell configuration. The results reveal that SnPS3 undergoes a conversion and alloying reaction to deliver high lithiation capacities. The SnPS3 anode delivered a significant lithiation capacity of ∼800 mAh g–1 at a specific current of 100 mA g–1. Moreover, the layered structure was able to accommodate the volume changes upon (de)lithiation as evident from its excellent cycling stability. Additionally, the SnPS3 anode demonstrated excellent rate capability as well and delivered ∼315 mAh g–1 at a high specific current of 2 A g–1. Furthermore, the lithium-storage mechanism was investigated through cyclic voltammetry and ex situ X-ray diffraction and X-ray photoelectron spectroscopy studies. Studies of SnPS3 anode in a full cell configuration by coupling with commercial LiNi0.33Co0.33Mn0.33O2 cathode are also presented. The outstanding electrochemical performance demonstrated by the SnPS3 anode calls for further research into this novel class of metal thiophosphites for energy storage applications.
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