Work

Electrohydrodynamic Printing Grid‐Structured Catalytic Layers with Excellent Bending Resistance for Flexible Al–air Batteries

Year: 2024

Type: article

Abstract: The catalytic film of a flexible Al-air battery is generally a brittle film formed by brushing a slurry onto the surface of carbon cloth. Fatigue bending can easily lead to cracking of the catalytic film and shedding of the active material. This study innovatively proposes a novel grid-structured catalytic layer prepared by electrohydrodynamic printing. Experiments have verified that, compared with traditional catalytic films, the grid-structured catalytic layer exhibits excellent bending resistance. After 10 000 fatigue bending cycles, its relative resistance is ≈1/9 that of the traditional catalytic film. The printed grid-structured catalytic layer is applied to a flexible Al-air battery, which maintains a power density retention rate as high as 92% after the same number of bending cycles. Compared to traditional catalytic films, the electrodynamically printed grid-structured catalytic layer proposed in this study demonstrates both excellent electrochemical performance and bending resistance. This advancement holds significant importance for the development and application of flexible metal-air batteries.

Source: Small Methods

DOI: 10.1002/smtd.202400875

Authors: Yuxin Zuo, Ying Yu, Junyan Feng, Chuncheng Zuo, Yong Lv

Institutions: Jiaxing Nanhu University, Jiaxing University

Language: English

Topic: Advanced battery technologies research

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: bronze

Funders: National Natural Science Foundation of China, Natural Science Foundation of Zhejiang Province