A monoclinic polymorph of sodium birnessite for ultrafast and ultrastable sodium ion storage

Hui Xia; Xiaohui Zhu; Jizi Liu; Qi Liu; Si Lan; Qinghua Zhang; Xinyu Liu; Joon Kyo Seo; Tingting Chen; Lin Gu; Ying Shirley Meng

doi:10.1038/s41467-018-07595-y

Nature Communications (Nov 2018)

A monoclinic polymorph of sodium birnessite for ultrafast and ultrastable sodium ion storage

Hui Xia,
Xiaohui Zhu,
Jizi Liu,
Qi Liu,
Si Lan,
Qinghua Zhang,
Xinyu Liu,
Joon Kyo Seo,
Tingting Chen,
Lin Gu,
Ying Shirley Meng

Affiliations

Hui Xia: School of Materials Science and Engineering, Nanjing University of Science and Technology
Xiaohui Zhu: School of Materials Science and Engineering, Nanjing University of Science and Technology
Jizi Liu: School of Materials Science and Engineering, Nanjing University of Science and Technology
Qi Liu: Department of Physics, City University of Hong Kong
Si Lan: School of Materials Science and Engineering, Nanjing University of Science and Technology
Qinghua Zhang: Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Xinyu Liu: Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Joon Kyo Seo: Department of NanoEngineering, University of California San Diego
Tingting Chen: School of Materials Science and Engineering, Nanjing University of Science and Technology
Lin Gu: Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences
Ying Shirley Meng: Department of NanoEngineering, University of California San Diego

DOI: https://doi.org/10.1038/s41467-018-07595-y
Journal volume & issue: Vol. 9, no. 1
pp. 1 – 10

Abstract

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Layered Na x MnO2 cathode suffers from structural instability and sluggish kinetics. Here the authors show a method to yield monoclinic NaMn2−y−δ(OH)2y, a new polymorph of Na-birnessite with maximum Na occupancy and enlarged interlayer spacing, enabling outstanding cyclability and rate performance.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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