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A lithiophilic carbon scroll as a Li metal host with low tortuosity design and "Dead Li" self-cleaning capability

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Title: A lithiophilic carbon scroll as a Li metal host with low tortuosity design and "Dead Li" self-cleaning capability
Authors: Zhu, Ruijie Browse this author
Yang, Huijun Browse this author
Fadillah, Laras Browse this author
Xiong, Zetao Browse this author
Kowalski, Damian Browse this author
Zhu, Chunyu Browse this author →KAKEN DB
Kitano, Sho Browse this author →KAKEN DB
Aoki, Yoshitaka Browse this author →KAKEN DB
Habazaki, Hiroki Browse this author →KAKEN DB
Issue Date: 14-Jun-2021
Publisher: Royal Society of Chemistry
Journal Title: Membrane water treatment
Volume: 22
Issue: 9
Start Page: 13332
End Page: 13343
Publisher DOI: 10.1039/d1ta02491d
Abstract: On the way to achieve a practical lithium (Li) metal anode for next-generation batteries, the formation and accumulation of inactive "Dead Li" is an unavoidable issue. The accumulation of "Dead Li" leads to increased internal mass-transfer resistance which seriously deteriorates the performance of Li metal batteries during long-term cycling. In this study, by accommodating Li metal into a copper oxide coated carbon scroll host with a vertically aligned framework which possesses a unique low-tortuosity structure, the cycling stability of the Li anode can be significantly improved. It is demonstrated that the mass-transfer resistance and the concentration polarization near the Li metal surface can be greatly alleviated by using this low-tortuosity anode structure design. "Dead Li" that is formed on the electrode surface can automatically fall into the inner tunnel of the carbon host, endowing the anode with the capability of "Dead Li" self-cleaning. As a result, our new Li electrode can remain electrochemically active even after 1000 h in a symmetric cell measurement from 1 mA cm(-2) to 1 mA h for 500 cycles. The as-reported structure design of the Li anode in this work is compatible with most of the modification technologies that have been applied to conventional Li foil electrodes, providing this new Li anode with a great potential to be applied in subsequent Li anode studies.
Type: article (author version)
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 幅崎 浩樹

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