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Title: Self-Adaptive Electrode with SWCNT Bundles as Elastic Substrate for High-Rate and Long-Cycle-Life Lithium/Sodium Ion Batteries

Abstract

Massive volume change of active materials in lithium/sodium ion batteries (LIB/SIB) causes severe structural collapse of electrodes and fast capacity decay of batteries. Here, a coaxial composite of single-wall carbon nanotube bundle (SWCNTB/SnO2) nanoparticles (NPs)/N-doped carbon shell (SWCNTB@SnO2@C) is constructed, where SWCNTBs with exceptional elasticity are explored as a self-adaptive substrate to supply a highly resilient conductive network. Within the confinement of hard carbon shells, SWCNTB can produce radially elastic deformation to accommodate the volume change of SnO2 during Li+/Na+ insertion/extraction. This overcomes the problem of strain fracturing of the outer carbon shell, as well as maintains close electrical contact between SnO2 and the conductive network. The LIB/SIB with the self-adaptive SWCNTB@SnO2@C electrode presents a series of superior battery performances, for example, a high specific capacity of 608 mAh g-1 at 10 A g-1 and 600 cycles in LIB without capacity decay.

Authors:
 [1];  [1];  [1];  [1];  [2];  [3];  [2];  [1]
  1. School of Materials Science and Engineering, and State Key Laboratory of Material Processing and Die & Mould Technology, Huazhong University of Science and Technology, Wuhan 430074 P. R. China
  2. School of Materials Science and Engineering, Beihang University, Beijing 100083 P. R. China
  3. National Renewable Energy Laboratory, 15257 Denver West Parkway Golden CO 80401 USA
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1478312
Report Number(s):
NREL/JA-5900-72643
Journal ID: ISSN 1613-6810
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Journal Article
Journal Name:
Small
Additional Journal Information:
Journal Volume: 14; Journal Issue: 47; Journal ID: ISSN 1613-6810
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; elasticity; lithium ion battery; self-adaptive electrode; single-wall carbon nanotube bundle; sodium ion battery

Citation Formats

Wang, Yaxiong, Ren, Jing, Gao, Xiang, Zhang, Wenjun, Duan, Huiping, Wang, Min, Shui, Jianglan, and Xu, Ming. Self-Adaptive Electrode with SWCNT Bundles as Elastic Substrate for High-Rate and Long-Cycle-Life Lithium/Sodium Ion Batteries. United States: N. p., 2018. Web. doi:10.1002/smll.201802913.
Wang, Yaxiong, Ren, Jing, Gao, Xiang, Zhang, Wenjun, Duan, Huiping, Wang, Min, Shui, Jianglan, & Xu, Ming. Self-Adaptive Electrode with SWCNT Bundles as Elastic Substrate for High-Rate and Long-Cycle-Life Lithium/Sodium Ion Batteries. United States. doi:10.1002/smll.201802913.
Wang, Yaxiong, Ren, Jing, Gao, Xiang, Zhang, Wenjun, Duan, Huiping, Wang, Min, Shui, Jianglan, and Xu, Ming. Thu . "Self-Adaptive Electrode with SWCNT Bundles as Elastic Substrate for High-Rate and Long-Cycle-Life Lithium/Sodium Ion Batteries". United States. doi:10.1002/smll.201802913.
@article{osti_1478312,
title = {Self-Adaptive Electrode with SWCNT Bundles as Elastic Substrate for High-Rate and Long-Cycle-Life Lithium/Sodium Ion Batteries},
author = {Wang, Yaxiong and Ren, Jing and Gao, Xiang and Zhang, Wenjun and Duan, Huiping and Wang, Min and Shui, Jianglan and Xu, Ming},
abstractNote = {Massive volume change of active materials in lithium/sodium ion batteries (LIB/SIB) causes severe structural collapse of electrodes and fast capacity decay of batteries. Here, a coaxial composite of single-wall carbon nanotube bundle (SWCNTB/SnO2) nanoparticles (NPs)/N-doped carbon shell (SWCNTB@SnO2@C) is constructed, where SWCNTBs with exceptional elasticity are explored as a self-adaptive substrate to supply a highly resilient conductive network. Within the confinement of hard carbon shells, SWCNTB can produce radially elastic deformation to accommodate the volume change of SnO2 during Li+/Na+ insertion/extraction. This overcomes the problem of strain fracturing of the outer carbon shell, as well as maintains close electrical contact between SnO2 and the conductive network. The LIB/SIB with the self-adaptive SWCNTB@SnO2@C electrode presents a series of superior battery performances, for example, a high specific capacity of 608 mAh g-1 at 10 A g-1 and 600 cycles in LIB without capacity decay.},
doi = {10.1002/smll.201802913},
journal = {Small},
issn = {1613-6810},
number = 47,
volume = 14,
place = {United States},
year = {2018},
month = {10}
}