3D macroporous electrode and high-performance in lithium-ion batteriesusing SnO2 coated on Cu foam

Collection with item attached
2016
Item details URL
http://open-repository.kisti.re.kr/cube/handle/open_repository/473429.do
DOI
10.1038/srep18626
Title
3D macroporous electrode and high-performance in lithium-ion batteriesusing SnO2 coated on Cu foam
Description
Y.-E.S. acknowledges the Institute for Basic Science (IBS) in Korea.This work was supported by Project Code (IBS-R006-G1). Y.H.C.acknowledges financial support from the Priority Research Center Program(2009-0093814) and the Basic Science Research Program (2013R1A1A2061636)through the National Research Foundation of Korea (NRF), which is fundedby the Ministry of Education. H.C. also acknowledges support from theBasic Science Research Program (2014R1A2A1A11052513), and Priority(2012-0006680) and Pioneer (2011-0001684) Research Centers Programsthrough NRF. Mr. Matthew Glazer (Northwestern University in USA) isacknowledged for useful conversations.
abstract
A three-dimensional porous architecture makes an attractive electrode structure, as it has an intrinsic structural integrity and an ability to buffer stress in lithium-ion batteries caused by the large volume changes in high-capacity anode materials during cycling. Here we report the first demonstration of a SnO2-coated macroporous Cu foam anode by employing a facile and scalable combination of directional freeze-casting and sol-gel coating processes. The three-dimensional interconnected anode is composed of aligned microscale channels separated by SnO2 coated Cu walls and much finer micrometer pores, adding to surface area and providing space for volume expansion of SnO2 coating layer. With this anode, we achieve a high reversible capacity of 750 mAh g(-1) at current rate of 0.5 C after 50 cycles and an excellent rate capability of 590 mAh g(-1) at 2 C, which is close to the best performance of Sn-based nanoscale material so far.
provenance
Made available in Cube on 2018-09-28T10:19:19Z (GMT). No. of bitstreams: 0
language
English
author
Um, Ji Hyun
Choi, Myounggeun
Park, Hyeji
Cho, Yong-Hun
Dunand, David C.
Choe, Heeman
Sung, Yung-Eun
orcid
Choe, Heeman/0000-0002-5908-577X; Dunand, David/0000-0001-5476-7379
accessioned
2018-09-28T10:19:19Z
available
2018-09-28T10:19:19Z
issued
2016
citation
SCIENTIFIC REPORTS(6)
issn
2045-2322
uri
http://open-repository.kisti.re.kr/cube/handle/open_repository/473429.do
Funder
미래창조과학부
Funding Program
기초과학연구원연구운영비지원
Project ID
1711045947
Jurisdiction
Rep.of Korea
Project Name
Synthesis of Nanocrystals for Biomedical and Energy Applications
rights
openAccess
type
article


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