Abstract External pressure exerts a non-linear effect on battery cycle life in silicon-carbon anode cells: moderate compression reduces capacity fading by improving interfacial contact, while excessive pressure accelerates degradation by restricting Li+ transport pathways. In-situ swelling…
1. Abstract Lithium plating (lithium dendrite formation) remains a principal failure mode in lithium-ion pouch cells, especially under fast charging, low temperature or when electrodes age. This article…
Abstract Cell stiffness measurement in lithium-ion batteries splits into two distinct concepts: compression stiffness (also called compressive stiffness) — resistance to elastic deformation under externally applied static load — and expansion stiffness — resistance…
1. Preface Mechanical properties are an increasingly important performance axis for lithium-ion cells. In electric vehicles, cells experience external loads during assembly, thermal expansion in operation, and —…
1. Preface During the charge and discharge process of lithium-ion batteries, the swelling of the battery cells will occur due to the structural swelling of the positive and…
Abstract To accurately measure pressure in pouch cell tests — tracking both thickness change and expansion force — is essential for cell design optimization and safety assurance 1-3. So, researchers…
During the charging and discharging process of lithium-ion batteries, as lithium ions are continuously inserted and removed, the thickness of the battery will expand and shrink to a…
1. Introduction This study utilizes in situ swelling analysis to directly compare the overcharge response of three commercial lithium-ion cell types, each featuring a different cathode material: LCO…
1. Article Abstract We present a clear, engineering-focused translation of Amartya Mukhopadhyay’s in-situ optical stress study on thin-film graphite electrodes (CVD C) paired with lithium metal. The work…
Abstract This study uses synchronized in-situ measurement to quantify Thickness Swelling and volume swelling of LiFePO₄ (LFP)/graphite pouch cells during charge–discharge. Because LFP (olivine) shows minimal structural expansion,…
1. Abstract A 2020 collaborative study by Central South University and CATL investigated the cyclic swelling force evolution in NCM (Nickel Manganese Cobalt) lithium-ion power batteries under different…
Due to its safety and stability, LFP batteries are increasingly popular in the new energy storage and electric vehicle industries. Currently commonly used LFP system batteries, the cathode…
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