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Preparation and Discharge Performance of Thin‐Film Thermal Battery
Author(s) -
Hu Jing,
Guo Hao,
Li Cheng-Jie,
Zhang Ying-Chao,
Yuan Jin-Xiu,
Zhang Shan-Shan,
Zhao Li-Li
Publication year - 2020
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.202000737
Subject(s) - materials science , miniaturization , cathode , screen printing , electrolyte , battery (electricity) , thin film , diffusion , microstructure , thermal , optoelectronics , nanotechnology , composite material , electrode , electrical engineering , chemistry , power (physics) , physics , quantum mechanics , meteorology , thermodynamics , engineering
In this study, a thin‐film single cell is successfully prepared by screen‐printing process. The single cell with 100 μm film cathode and 200 μm film electrolyte via screen‐printing technique exhibits a specific capacity of 1163.4 As g −1 up to 1.5 V. For comparison, a single cell with 500 μm pellet cathode and 300 μm pellet electrolyte via powder‐pressing process just presents a specific capacity of 361.3 As g −1 . The enhancement of specific capacity of single cells prepared by the screen‐printing method can be ascribed to the microstructure of the thin film, which improves the diffusion rate of Li + by macroscopically reducing the thickness of the single cell, and thus releases the maximum capacity of the active material. The thin‐film single cell also demonstrates low diffusion impedance, making it potentially suitable for use in a pulse miniaturization thermal battery. This work provides guidance for the potential engineering application of screen‐printing techniques in thermal battery preparation.