Manipulation of π-aromatic conjugation in two-dimensional Sn-organic materials for efficient lithium storage

Jingwei Liu; Jialong Jiang; Qingyang Zhou; Zhonghang Chen; Runhao Zhang; Xiufang Xu; Xue Han; Sihai Yang; Zhen Zhou; Peng Cheng; Wei Shi

eScience (Apr 2023)

Manipulation of π-aromatic conjugation in two-dimensional Sn-organic materials for efficient lithium storage

Jingwei Liu,
Jialong Jiang,
Qingyang Zhou,
Zhonghang Chen,
Runhao Zhang,
Xiufang Xu,
Xue Han,
Sihai Yang,
Zhen Zhou,
Peng Cheng,
Wei Shi

Affiliations

Jingwei Liu: Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE) and Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai University, Tianjin, 300071, China
Jialong Jiang: Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE) and Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai University, Tianjin, 300071, China
Qingyang Zhou: Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE) and Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai University, Tianjin, 300071, China
Zhonghang Chen: Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE) and Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai University, Tianjin, 300071, China
Runhao Zhang: Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE) and Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai University, Tianjin, 300071, China
Xiufang Xu: Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE) and Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai University, Tianjin, 300071, China
Xue Han: Department of Chemistry, University of Manchester, Manchester, M13 9PL, UK
Sihai Yang: Department of Chemistry, University of Manchester, Manchester, M13 9PL, UK
Zhen Zhou: Institute of New Energy Material Chemistry, School of Materials Science and Engineering, Nankai University, Tianjin, 300350, China
Peng Cheng: Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE) and Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai University, Tianjin, 300071, China; Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, 300192, China
Wei Shi: Department of Chemistry, Key Laboratory of Advanced Energy Materials Chemistry (MOE) and Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai University, Tianjin, 300071, China; Haihe Laboratory of Sustainable Chemical Transformations, Tianjin, 300192, China; Corresponding author.

Journal volume & issue: Vol. 3, no. 2
p. 100094

Abstract

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Sn-based materials are promising candidates for lithium storage but suffer generally from huge volume change during the (de)lithiation processes. Sn-organic materials with monodispersed Sn centers surrounded by lithium active ligands can alleviate the volume change of anode materials based on reversible (de)lithiation processes. However, the structural factors governing the kinetics of lithium storage and utilization efficiency of active sites are not well understood to date. Herein, we report three two-dimensional Sn-organic materials with enhanced lithium storage performance by manipulation of π-aromatic conjugation of the ligands. The increasing π-aromatic conjugation plays a key role in promoting efficient lithium storage, and the volume expansion during the (de)lithiation reaction is suppressed in these Sn-organic materials. This work reveals that the π-aromatic conjugation of the ligand is crucial for improving the kinetics of lithium storage and the utilization of active sites in metal-organic materials with minimised volume expansion.

Published in eScience

ISSN: 2667-1417 (Online)
Publisher: KeAi Communications Co. Ltd.
Country of publisher: China
LCC subjects: Technology: Mechanical engineering and machinery; Technology: Electrical engineering. Electronics. Nuclear engineering: Electronics
Website: https://www.keaipublishing.com/en/journals/escience/

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