Particles in composite polymer electrolyte for solid-state lithium batteries: A review (Open Access)--颗粒学报PARTICUOLOGY

Meng, N., Zhu, X., & Lian, F. (2022). Particles in composite polymer electrolyte for solid-state lithium batteries: A review. Particuology, 60, 14-36. https://doi.org/10.1016/j.partic.2021.04.002

Particles in composite polymer electrolyte for solid-state lithium batteries: A review (Open Access)

Nan Meng, Xiaogang Zhu, Fang Lian ^*

School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China

10.1016/j.partic.2021.04.002

Volume 60, January 2022, Pages 14-36

Received 29 November 2020, Revised 6 April 2021, Accepted 15 April 2021, Available online 15 May 2021, Version of Record 23 October 2021.

E-mail: lianfang@mater.ustb.edu.cn

Highlights

• Recent advancements on CPE are summarized in views of effects of particles.

• The interactions between particles and other components are particularly focused.

• The lithium conductive mechanism within CPE is revealed.

• Novel strategy for modification of the particles is introduced.

• A perspective on the direction of future CPE development for SSLBs is presented.

Abstract

Solid-state lithium batteries (SSLBs) have been identified as one kind of the most promising energy conversion and storage devices because of their safety, high energy density, and long cycling life. The development of solid-state electrolyte is vital to commercialize SSLBs. Composite polymer electrolyte (CPE), derived by compositing inorganic particles into solid polymer electrolyte has become the most practical species for SSLBs because it inherits the advantages of polymer electrolyte and simultaneously achieves enhanced ionic conductivity and mechanical properties. The characteristics of inorganic particles and their interaction with polymers strongly impact the performance of CPE, improving its ionic conductivity, mechanical properties, thermal and electrochemical stability, as well as interface compatibility with both electrodes. In this review, the effects of particle characteristics including its species, size, proportion, morphology on the ionic conductivity and mechanical properties of CPE are reviewed. Meanwhile, some novel composite strategies are also introduced including surface modification, hybridization, and alignment of particles in polymer matrices, as well as some new preparation methods of CPE. The interactions between particles and other components in CPE including polymer matrices or lithium salt are particularly focused herein to reveal the lithium conductive mechanism. Finally, a perspective on the direction of future CPE development for SSLBs is presented.

Graphical abstract

Keywords

Particles; Composite polymer electrolyteIonic conductivity; Interaction; Interface; Solid-state batteries

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