Optimization of electrode manufacturing processes from the perspective of mechanical properties

IF 4.6 Q2 MATERIALS SCIENCE, BIOMATERIALS
Binqi Li, Jinyang Song, Jianhua Zhou, Jiaying Chen, Jianping Li, Jiang Chen, Lubing Wang, Kai Wu
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引用次数: 0

Abstract

As the fundamental part of battery production, the electrode manufacturing processes have a key impact on the mechanical and electrochemical properties of batteries. A comprehensive study is designed in this paper to reveal the manufacturing effect from the perspective of mechanical properties. Initially, the electrodes samples are prepared after different manufacturing process, i.e., slurry mixing, coating, drying, calendering, slitting, punching, cutting, assembling, electrolyte filling and formation. The effects of these processes on the mechanical response and morphology of electrodes are investigated. The calendering process significantly enhances the strength of both anode and cathode while providing a more uniform distribution of particles on the electrode. Besides, according to literature studies, the slurry mixing process has a critical impact on electrode deformation and failure. Hence, the effects of compaction density ρc and binder content Bc are further discussed to improve the slurry mixing and calendering processes. The active layer will debond from the current collector during cathode failure process as ρc and Bc decreases. This study provides valuable suggestions for optimizing the mechanical response of electrodes under key electrode processes.
从机械性能角度优化电极制造工艺
作为电池生产的基础部分,电极制造工艺对电池的机械性能和电化学性能有着关键影响。本文设计了一项综合研究,从机械性能的角度揭示制造效应。首先,电极样品经过不同的生产工艺制备而成,这些工艺包括浆料混合、涂覆、干燥、压延、分切、冲压、切割、组装、电解液填充和化成。研究了这些工艺对电极机械响应和形态的影响。压延工艺大大提高了阳极和阴极的强度,同时使电极上的颗粒分布更加均匀。此外,根据文献研究,浆料混合过程对电极变形和失效有重要影响。因此,我们将进一步讨论压实密度 ρc 和粘合剂含量 Bc 的影响,以改进浆料混合和压延工艺。在阴极失效过程中,随着 ρc 和 Bc 的降低,活性层会从集流器上脱落。这项研究为优化关键电极工艺下电极的机械响应提供了宝贵的建议。
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来源期刊
ACS Applied Bio Materials
ACS Applied Bio Materials Chemistry-Chemistry (all)
CiteScore
9.40
自引率
2.10%
发文量
464
期刊介绍: ACS Applied Bio Materials is an interdisciplinary journal publishing original research covering all aspects of biomaterials and biointerfaces including and beyond the traditional biosensing, biomedical and therapeutic applications. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important bio applications. The journal is specifically interested in work that addresses the relationship between structure and function and assesses the stability and degradation of materials under relevant environmental and biological conditions.
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