材料科学
阳极
二硫化钼
单层
纳米晶
纳米技术
锂(药物)
电化学
化学工程
储能
空位缺陷
电容感应
钼
电极
复合材料
冶金
内分泌学
物理化学
功率(物理)
工程类
物理
化学
操作系统
医学
量子力学
核磁共振
计算机科学
作者
Linlin Fan,Shulai Lei,Hirbod Maleki Kheimeh Sari,Longsheng Zhong,Alibek Kakimov,Jingjing Wang,Jun Chen,Dezheng Liu,Liang Huang,Junhua Hu,Liangxu Lin,Xifei Li
出处
期刊:Nano Energy
[Elsevier]
日期:2020-12-01
卷期号:78: 105235-105235
被引量:51
标识
DOI:10.1016/j.nanoen.2020.105235
摘要
Two-dimensional (2D) monolayers are promising in electrochemical energy storages (EES), while their performance is still far below than that can be exploited. Understanding 2D monolayers, particularly thin nanocrystals (NCs) with and without surface modifications in EES would be interesting. This work demonstrates how monolayered molybdenum sulfide (Mo–S) NCs with S vacancies perform as a promising anode material to improve many aspects of lithium-ion batteries (LIBs), by utilizing their metallicity, multi-layer adsorption, minimized self-discharge and fast 2D capacitive processes. By way of examples, we demonstrate an increasing trend of the energy capacity and improved lithium diffusion kinetics associating with the S vacancy and phase change, a discharge capacity of 1409 mAh g−1 at 0.1 A g−1, and even reach the capacitive dominated (>814.7 mAh g−1) capacity at 1 A g−1. It demonstrates that the surface modified Mo–S NCs can be well used in LIBs. There may be also considerable opportunities of similar 2D materials in LIBs and beyond (e.g. supercapacitor) which can fully exploit the fast 2D capacitive process and high surface capacity.
科研通智能强力驱动
Strongly Powered by AbleSci AI