Volume 16, Issue 26 2000699
Review

Progress on Lithium Dendrite Suppression Strategies from the Interior to Exterior by Hierarchical Structure Designs

Lu Shen

Lu Shen

Shenzhen Geim Graphene, Center Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055 P. R. China

Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084 P. R. China

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Peiran Shi

Peiran Shi

Shenzhen Geim Graphene, Center Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055 P. R. China

Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084 P. R. China

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Xiaoge Hao

Xiaoge Hao

Shenzhen Geim Graphene, Center Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055 P. R. China

Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084 P. R. China

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Qiang Zhao

Qiang Zhao

Shenzhen Geim Graphene, Center Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055 P. R. China

Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084 P. R. China

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Jiabin Ma

Jiabin Ma

Shenzhen Geim Graphene, Center Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055 P. R. China

Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084 P. R. China

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Yan-Bing He

Corresponding Author

Yan-Bing He

Shenzhen Geim Graphene, Center Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055 P. R. China

Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084 P. R. China

E-mail: [email protected], [email protected]

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Feiyu Kang

Corresponding Author

Feiyu Kang

Shenzhen Geim Graphene, Center Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055 P. R. China

Laboratory of Advanced Materials, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084 P. R. China

E-mail: [email protected], [email protected]

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First published: 27 May 2020
Citations: 77

Abstract

Lithium (Li) metal is promising for high energy density batteries due to its low electrochemical potential (−3.04 V) and high specific capacity (3860 mAh g−1). However, the safety issues impede the commercialization of Li anode batteries. In this work, research of hierarchical structure designs for Li anodes to suppress Li dendrite growth and alleviate volume expansion from the interior (by the 3D current collector and host matrix) to the exterior (by the artificial solid electrolyte interphase (SEI), protective layer, separator, and solid state electrolyte) is concluded. The basic principles for achieving Li dendrite and volume expansion free Li anode are summarized. Following these principles, 3D porous current collector and host matrix are designed to suppress the Li dendrite growth from the interior. Second, artificial SEI, the protective layer, and separator as well as solid-state electrolyte are constructed to regulate the distribution of current and control the Li nucleation and deposition homogeneously for suppressing the Li dendrite growth from exterior of Li anode. Ultimately, this work puts forward that it is significant to combine the Li dendrite suppression strategies from the interior to exterior by 3D hierarchical structure designs and Li metal modification to achieve excellent cycling and safety performance of Li metal batteries.

Conflict of Interest

The authors declare no conflict of interest.

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