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Title: High performance binder-free SiO x/C composite LIB electrode made of SiO x and lignin

Abstract

A high performance binder-free SiO x/C composite electrode was synthesized by mixing SiO x particles and Kraft lignin in a cryo-mill followed by heat treatment at 600 °C. After the heat treatment, lignin formed a conductive matrix hosting SiO x particles, ensuring electronic conductivity, connectivity, and accommodation of volume changes during lithiation/delithiation. As the result, no conventional binder or conductive agent was necessary. When electrochemically cycled, the composite electrode delivered excellent performance, maintaining ~900 mAh g -1 after 250 cycles at a rate of 200 mA g -1, and good rate capability. The robustness of the electrode was also examined by post-cycling SEM images, where few cracks were observed. The excellent electrochemical performance can be attributed to the comparatively small volume change of SiO x-based electrodes (160%) and the flexibility of the lignin derived carbon matrix to accommodate the volume change. In conclusion, this work should stimulate further interests in using bio-renewable resources in making advanced electrochemical energy storage systems.

Authors:
 [1]; ORCiD logo [1];  [1];  [2];  [1];  [1]
  1. Univ. of Kentucky, Lexington, KY (United States)
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
National Science Foundation (NSF); USDOE
OSTI Identifier:
1375117
Report Number(s):
NREL/JA-5K00-69033
Journal ID: ISSN 0378-7753
Grant/Contract Number:
AC36-08GO28308
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Power Sources
Additional Journal Information:
Journal Volume: 362; Journal Issue: C; Journal ID: ISSN 0378-7753
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; SiOx/C composite electrode; lithium-ion battery; lignin; renewable

Citation Formats

Chen, Tao, Hu, Jiazhi, Zhang, Long, Pan, Jie, Liu, Yiyang, and Cheng, Yang -Tse. High performance binder-free SiOx/C composite LIB electrode made of SiOx and lignin. United States: N. p., 2017. Web. doi:10.1016/j.jpowsour.2017.07.049.
Chen, Tao, Hu, Jiazhi, Zhang, Long, Pan, Jie, Liu, Yiyang, & Cheng, Yang -Tse. High performance binder-free SiOx/C composite LIB electrode made of SiOx and lignin. United States. doi:10.1016/j.jpowsour.2017.07.049.
Chen, Tao, Hu, Jiazhi, Zhang, Long, Pan, Jie, Liu, Yiyang, and Cheng, Yang -Tse. 2017. "High performance binder-free SiOx/C composite LIB electrode made of SiOx and lignin". United States. doi:10.1016/j.jpowsour.2017.07.049.
@article{osti_1375117,
title = {High performance binder-free SiOx/C composite LIB electrode made of SiOx and lignin},
author = {Chen, Tao and Hu, Jiazhi and Zhang, Long and Pan, Jie and Liu, Yiyang and Cheng, Yang -Tse},
abstractNote = {A high performance binder-free SiOx/C composite electrode was synthesized by mixing SiOx particles and Kraft lignin in a cryo-mill followed by heat treatment at 600 °C. After the heat treatment, lignin formed a conductive matrix hosting SiOx particles, ensuring electronic conductivity, connectivity, and accommodation of volume changes during lithiation/delithiation. As the result, no conventional binder or conductive agent was necessary. When electrochemically cycled, the composite electrode delivered excellent performance, maintaining ~900 mAh g-1 after 250 cycles at a rate of 200 mA g-1, and good rate capability. The robustness of the electrode was also examined by post-cycling SEM images, where few cracks were observed. The excellent electrochemical performance can be attributed to the comparatively small volume change of SiOx-based electrodes (160%) and the flexibility of the lignin derived carbon matrix to accommodate the volume change. In conclusion, this work should stimulate further interests in using bio-renewable resources in making advanced electrochemical energy storage systems.},
doi = {10.1016/j.jpowsour.2017.07.049},
journal = {Journal of Power Sources},
number = C,
volume = 362,
place = {United States},
year = 2017,
month = 7
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on July 19, 2018
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