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2. Pyrolysis of naphthol functionalized polytriarylamine for efficient sodium-ion storage.

Author

Kim, Taehyoung, Chae, Seongwook, Lee, Taewoong, Yoon, Young Rok, Park, Jae Bin, Kim, Byeong Jin, Lee, Kyoungeun, Song, In Young, Yun, Hwanhui, Lee, Wang-Eun, Heo, Kyuyoung, Kim, Sang Youl, Lee, Jinhee, and Lee, Jin Hong

Subjects
NAPHTHOL, SODIUM ions, PYROLYSIS, STORAGE, ANODES
Abstract

Developing suitable electrode materials for sodium-ion batteries (SIBs) is important to improve the electrochemical performance. Herein, we prepare n-type carbonaceous anodes via pyrolysis of naphthol-functionalized polytriarylamine that manifests rapid Na+ storage. During pyrolysis, gas evolution from poly(DNap-OH) triggers structural rearrangement to form a disordered microstructure with a high char-yield of 72%. When utilizing PDNOH as anodes in SIBs, PDNOH-800 delivered the specific capacity of 212 mA h g−1 at 0.05 A g−1 and stable cycling behavior with C.E. of 99.7%. The n-type characteristics attributed to N- and O-moieties played a critical role to enhance the electrochemical performance of SIBs via surface-induced Na+ storage with fast kinetics. [ABSTRACT FROM AUTHOR]

Published
2024
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