期刊文献+
共找到1篇文章
< 1 >
每页显示 20 50 100
Multivalence-Ion Intercalation Enables Ultrahigh 1T Phase MoS_(2)Nanoflowers to Enhanced Sodium-Storage Performance 被引量:1
1
作者 Kun Ma Yu Liu +4 位作者 Hao Jiang Yanjie Hu Rui Si Honglai Liu Chunzhong Li 《CCS Chemistry》 CAS 2021年第5期1472-1482,共11页
Developing rapid charging and robust electrode materials for Na-ion batteries is of considerable significance in large-scale power electricity fields.Herein,the authors have proposed a multivalenceion intercalation st... Developing rapid charging and robust electrode materials for Na-ion batteries is of considerable significance in large-scale power electricity fields.Herein,the authors have proposed a multivalenceion intercalation strategy to construct threedimensional(3D)Co-MoS2 nanoflowers with tailorable 1T/2H phase and interlayer distance.The as-formed S-Co-S covalent bonds serve as“electric bridges”to accelerate interlayer charge transfer without 1T phase degeneration during sodiation and desodiation.Quantum density functional theory(QDFT)calculations further confirm that the optimal Co-MoS2 nanoflowers possess the highest Na adsorption energy with reduced ionic diffusion barrier.Consequently,they deliver a superior sodiumstorage capacity of 351 mAh g−1 in 0.4-3.0 V even at 20 A g−1 without capacity fading at 5 A g−1 for 2000 cycles.The high electrochemical reversibility of the 1T phase in Co-MoS2,which accounts for such excellent performance,has been unveiled for the first time by in situ Raman spectra.This finding demonstrates important insights onto promoting two-dimensional(2D)nanomaterials toward rapid charging alkali-ion batteries. 展开更多
关键词 multivalence-ion intercalation 1T-MoS2 interlayer spacing high rate Na-ion batteries
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部