Selenium vacancy-rich and carbon-free VSe2 nanosheets for high-performance lithium storage

Nanoscale ◽  
2020 ◽  
Vol 12 (16) ◽  
pp. 8858-8866
Author(s):  
Qiwang Jiang ◽  
Jie Wang ◽  
Yan Jiang ◽  
Long Li ◽  
Xingzhong Cao ◽  
...  

Selenium vacancy-rich and carbon-free VSe2 nanosheets achieve excellent lithium storage performance due to significantly enhanced lithium-ion diffusion rate and electrochemical active sites induced by the Se vacancies.

2021 ◽  
Author(s):  
Yang Zhang ◽  
Yakun Tang ◽  
Lang Liu ◽  
Yue Zhang ◽  
Zhiguo Li

T-Nb2O5/CNT nanohybrid with short transmission path, rich active sites, and favorable mechanical flexibility can achieve the fast transportation of ions/electrons. The obtained nanohybrid with continuous conductive network exhibit better lithium...


2020 ◽  
Vol 4 (9) ◽  
pp. 4780-4788 ◽  
Author(s):  
Qiang Ma ◽  
Jiakang Qu ◽  
Xiang Chen ◽  
Zhuqing Zhao ◽  
Yan Zhao ◽  
...  

Low-cost feedstocks and rationally designed structures are the keys to determining the lithium-storage performance and practical applications of Si-based anodes for lithium-ion batteries (LIBs).


2019 ◽  
Vol 123 (25) ◽  
pp. 15412-15418 ◽  
Author(s):  
Dong Fan ◽  
Andrey A. Golov ◽  
Artem A. Kabanov ◽  
Chengke Chen ◽  
Shaohua Lu ◽  
...  

2015 ◽  
Vol 39 (11) ◽  
pp. 8416-8423 ◽  
Author(s):  
Xiaoyu Wu ◽  
Songmei Li ◽  
Bo Wang ◽  
Jianhua Liu ◽  
Mei Yu

Various micro/nano-structured MnCo2O4 with excellent lithium storage performance were synthesized controllably.


NANO ◽  
2020 ◽  
Vol 15 (04) ◽  
pp. 2050051
Author(s):  
Rudong Zheng ◽  
Lili Wu ◽  
Jiabao Zhao ◽  
Chuncheng Zhu ◽  
Hong Gao

Ti3C2Tx, a new type of two-dimensional material, is a prospective anode material in lithium-ion batteries (LIBs) for its low lithium-ion diffusion barrier, high conductivity and many other excellent properties. In this paper, multilayer Ti3C2Tx and delaminated Ti3C2Tx samples are prepared by etching Ti3AlC2 powder with HF and [Formula: see text], respectively. We explore the application of the two samples in LIBs, and analyze their electrochemical behavior and kinetic mechanism. At the current densities of 0.1[Formula: see text]A[Formula: see text]g[Formula: see text], the delaminated Ti3C2Tx electrode delivered higher capacities of 255[Formula: see text]mAh[Formula: see text]g[Formula: see text] than multilayer Ti3C2Tx electrode (100[Formula: see text]mAh[Formula: see text]g[Formula: see text]). Even after 1000 cycles, the specific capacity of the delaminated Ti3C2Tx is still up to 205[Formula: see text]mAh[Formula: see text]g[Formula: see text] at 1[Formula: see text]A[Formula: see text]g[Formula: see text]. This work proves the great potential of the delaminated Ti3C2Tx for lithium-ion storage.


2019 ◽  
Vol 7 (13) ◽  
pp. 7644-7653 ◽  
Author(s):  
Jingyi Wu ◽  
Na You ◽  
Xiongwei Li ◽  
Hongxia Zeng ◽  
Shuai Li ◽  
...  

The synergistic effect of the SiO2@MoS2 core–shell nanocomposite simultaneously facilitates Li+ diffusion and provides triple confinement of polysulfides.


2015 ◽  
Vol 17 (27) ◽  
pp. 17562-17565 ◽  
Author(s):  
Liwei Su ◽  
Jian Xie ◽  
Yawei Xu ◽  
Lianbang Wang ◽  
Yuanhao Wang ◽  
...  

This work discloses a novel synthesis method for yolk–shell Si@void@C nanocomposites as high-performance anodes in lithium ion batteries.


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