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Cited 8 time in webofscience Cited 21 time in scopus
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Freestanding conversion-type anode via one-pot formation for flexible Li-ion battery

Authors
Kim, Hun SeongKim, Dong WonKim, Sun-SikSenthil, ChenrayanJung, Hyun Young
Issue Date
1-Jan-2022
Publisher
ELSEVIER SCIENCE SA
Keywords
Li-ion battery; One-pot synthesis; Manganese oxide nanowires; Binder-free; Flexible device
Citation
CHEMICAL ENGINEERING JOURNAL, v.427
Indexed
SCIE
SCOPUS
Journal Title
CHEMICAL ENGINEERING JOURNAL
Volume
427
URI
https://scholarworks.gnu.ac.kr/handle/sw.gnu/1758
DOI
10.1016/j.cej.2021.130937
ISSN
1385-8947
1873-3212
Abstract
Transition metal oxide-based anodes are an attractive candidate for high performance next-generation batteries due to their high theoretical capacity. However, their practical applications toward high energy density are limited due to the inactive materials in the electrode and large volume expansion during Li insertion and extraction processes. Here, we report a one-pot formation method of cryptomelane manganese oxide nanowiresbased freestanding anode for Li-ion storage. The freestanding electrodes are completed simply by vacuum drying a controlled in-situ hydrogel thin film with no additional process, achieving flexible devices without a binder. The porous electrode structure via such a one-pot synthesis makes it capable of multidimensional Li-ion accessibility and volume change suppression. As a result, the mechanically flexible anode delivers the reversible capacity of about 525 mAh g-1 after 400th cycles at 1.0 A g-1. This study opens up the feasibility of one-pot synthesis in the design of various conversion-type electrodes to realize ultra-light, flexible energy storage devices.
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