Design of multifunctional interfaces on ceramic solid electrolytes for high-performance lithium-air batteries

Yunxin Shi; Ziyang Guo; Changhong Wang; Mingze Gao; Xiaoting Lin; Hui Duan; Yonggang Wang; Xueliang Sun

Green Energy & Environment (Jan 2025)

Design of multifunctional interfaces on ceramic solid electrolytes for high-performance lithium-air batteries

Yunxin Shi,
Ziyang Guo,
Changhong Wang,
Mingze Gao,
Xiaoting Lin,
Hui Duan,
Yonggang Wang,
Xueliang Sun

Affiliations

Yunxin Shi: College of Energy Material and Chemistry, College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
Ziyang Guo: College of Energy Material and Chemistry, College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China; Department of Mechanical and Materials Engineering, Western University, London, ON, N6A 5B9, Canada; Corresponding authors. Department of Mechanical and Materials Engineering, Western University, London, ON, N6A 5B9, Canada.
Changhong Wang: Department of Mechanical and Materials Engineering, Western University, London, ON, N6A 5B9, Canada; Eastern Institute for Advanced Study, Eastern Institute of Technology, Ningbo, Zhejiang, 315100, China
Mingze Gao: College of Energy Material and Chemistry, College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China
Xiaoting Lin: Department of Mechanical and Materials Engineering, Western University, London, ON, N6A 5B9, Canada
Hui Duan: Department of Mechanical and Materials Engineering, Western University, London, ON, N6A 5B9, Canada
Yonggang Wang: College of Energy Material and Chemistry, College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot, 010021, China; Department of Chemistry and Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Institute of New Energy, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Fudan University, Shanghai, 200433, China
Xueliang Sun: Department of Mechanical and Materials Engineering, Western University, London, ON, N6A 5B9, Canada; Eastern Institute for Advanced Study, Eastern Institute of Technology, Ningbo, Zhejiang, 315100, China; Corresponding authors. Department of Mechanical and Materials Engineering, Western University, London, ON, N6A 5B9, Canada.

Journal volume & issue: Vol. 10, no. 1
pp. 183 – 192

Abstract

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High-energy-density lithium (Li)–air cells have been considered a promising energy-storage system, but the liquid electrolyte-related safety and side-reaction problems seriously hinder their development. To address these above issues, solid-state Li–air batteries have been widely developed. However, many commonly-used solid electrolytes generally face huge interface impedance in Li–air cells and also show poor stability towards ambient air/Li electrodes. Herein, we fabricate a differentiating surface-regulated ceramic-based composite electrolyte (DSCCE) by constructing disparately LiI-containing polymethyl methacrylate (PMMA) coating and Poly (vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP) layer on both sides of Li1.5Al0.5Ge1.5(PO4)3 (LAGP). The cathode-friendly LiI/PMMA layer displays excellent stability towards superoxide intermediates and also greatly reduces the decomposition voltage of discharge products in Li–air system. Additionally, the anode-friendly PVDF-HFP coating shows low-resistance properties towards anodes. Moreover, Li dendrite/passivation derived from liquid electrolyte-induced side reactions and air/I-attacking can be obviously suppressed by the uniform and compact composite framework. As a result, the DSCCE-based Li–air batteries possess high capacity/low voltage polarization (11,836 mA h g−1/1.45 V under 500 mA g−1), good rate performance (capacity ratio under 1000 mA g−1/250 mA g−1 is 68.2%) and long-term stable cell operation (∼300 cycles at 750 mA g−1 with 750 mAh g−1) in ambient air.

Published in Green Energy & Environment

ISSN: 2468-0257 (Online)
Publisher: KeAi Communications Co., Ltd.
Country of publisher: China
LCC subjects: Technology: Mechanical engineering and machinery: Renewable energy sources; Science: Biology (General): Ecology
Website: https://www.keaipublishing.com/en/journals/green-energy-and-environment/

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