Carbon coated CoS<inf>2</inf>thermal battery electrode material with enhanced discharge performances and air stability

Xie, S; Deng, Y; Mei, J; Yang, Z; Lau, WM; Liu, H

Carbon coated CoS<inf>2</inf>thermal battery electrode material with enhanced discharge performances and air stability

Xie, S Deng, Y Mei, J Yang, Z Lau, WM Liu, H

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Publication Type:: Journal Article
Citation:: Electrochimica Acta, 2017, 231 pp. 287 - 293
Issue Date:: 2017-03-20

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Field	Value	Language
dc.contributor.author	Xie, S	en_US
dc.contributor.author	Deng, Y	en_US
dc.contributor.author	Mei, J	en_US
dc.contributor.author	Yang, Z	en_US
dc.contributor.author	Lau, WM	en_US
dc.contributor.author	Liu, H https://orcid.org/0000-0003-0266-9472	en_US
dc.date.issued	2017-03-20	en_US
dc.identifier.citation	Electrochimica Acta, 2017, 231 pp. 287 - 293	en_US
dc.identifier.issn	0013-4686	en_US
dc.identifier.uri	http://hdl.handle.net/10453/124579
dc.description.abstract	© 2017 Cobalt disulfide (CoS2) is a promising thermal battery electrode material for its superior thermal stability and discharge performance. However, the low natural resource and poor air stability restrict its application in thermal battery fabrication. In this work, carbon coated CoS2composite was prepared by a facile one-pot hydrothermal method with glucose as carbon source. During the growth of CoS2, the glucose molecules were in situ adsorbed and carbonized on the surface of the as-synthesized CoS2, and the resultant carbon coating provided improved electrical conductivity and discharge performances to the composite. The thermal battery cell, which was fabricated with such a composite cathode and with a Li-Si anode, can output a capacity of 235.8 mAh g−1and an energy density of 416.9 Wh kg−1at a cut-off voltage of 1.7 V. This carbon coated CoS2composite also presented enhanced air stability. After being stored in dry air for 3 months, the composite can still provide a capacity of 232.4 mAh g−1to 1.7 V, whereas the capacity of bare CoS2stored with the same condition dropped from 202.4 mAh g−1to 189.7 mAh g−1.	en_US
dc.relation.ispartof	Electrochimica Acta	en_US
dc.relation.isbasedon	10.1016/j.electacta.2017.02.068	en_US
dc.subject.classification	Energy	en_US
dc.title	Carbon coated CoS<inf>2</inf>thermal battery electrode material with enhanced discharge performances and air stability	en_US
dc.type	Journal Article
utslib.citation.volume	231	en_US
utslib.for	0306 Physical Chemistry (Incl. Structural)	en_US
utslib.for	0906 Electrical and Electronic Engineering	en_US
utslib.for	0204 Condensed Matter Physics	en_US
utslib.for	03 Chemical Sciences	en_US
utslib.for	09 Engineering	en_US
utslib.for	02 Physical Sciences	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
pubs.organisational-group	/University of Technology Sydney/Faculty of Science/School of Mathematical and Physical Sciences
pubs.organisational-group	/University of Technology Sydney/Strength - CCET - Centre for Clean Energy Technology
utslib.copyright.status	closed_access
pubs.declined	2018-05-28T09:08:15.332+1000
pubs.publication-status	Published	en_US
pubs.volume	231	en_US

Abstract:

© 2017 Cobalt disulfide (CoS2) is a promising thermal battery electrode material for its superior thermal stability and discharge performance. However, the low natural resource and poor air stability restrict its application in thermal battery fabrication. In this work, carbon coated CoS2composite was prepared by a facile one-pot hydrothermal method with glucose as carbon source. During the growth of CoS2, the glucose molecules were in situ adsorbed and carbonized on the surface of the as-synthesized CoS2, and the resultant carbon coating provided improved electrical conductivity and discharge performances to the composite. The thermal battery cell, which was fabricated with such a composite cathode and with a Li-Si anode, can output a capacity of 235.8 mAh g−1and an energy density of 416.9 Wh kg−1at a cut-off voltage of 1.7 V. This carbon coated CoS2composite also presented enhanced air stability. After being stored in dry air for 3 months, the composite can still provide a capacity of 232.4 mAh g−1to 1.7 V, whereas the capacity of bare CoS2stored with the same condition dropped from 202.4 mAh g−1to 189.7 mAh g−1.

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http://hdl.handle.net/10453/124579