Abstract EIS testing on LCO/graphite pouch cells shows that module-level compression pressure increases low-frequency impedance and charge transfer resistance ($R_{ct}$), and this effect is strongest at low state…
1. Preface The in-situ swelling analyzer (SWE) launched by IEST has constant pressure and constant gap test modes, which can monitor the thickness evolution of the cell under…
1. Abstract This study utilizes an In-situ Swelling Analyzer (SWE) to investigate the thickness evolution of an NCM cell under varying constant pressure conditions (50N, 500N, 1000N). The…
Abstract Blade battery technology refers to a long, thin, blade-shaped lithium-ion cell format — most commonly using lithium iron phosphate (LFP) chemistry — that is embedded directly into the…
Abstract Pouch cell swelling refers to the reversible and irreversible dimensional changes—in volume and thickness—that occur during lithium-ion intercalation and de-intercalation. Reversible swelling arises from lattice expansion during…
Abstract EV battery cell swelling compensation design depends on understanding how swelling behaves differently in thickness versus force as cells are stacked into modules. This study’s key findings,…
1. Author Information and Article Abstract Recently, Peng Tan’s group (first author Zhiyuan Zhang) at the University of Science and Technology of China (USTC) investigated the effects of…
Abstract Lithium plating on graphite anodes during fast charging or low-temperature operation presents a major safety and lifetime risk for lithium-ion batteries. This study integrates in-situ dynamic electrochemical…
Research Topics：Characterization and Quantification of Multi-field Coupling in Lithium-ion Batteries Under Mechanical Constraints First Author: Xue Cai Corresponding Authors: Caiping Zhang, Weihan Li Affiliated Institutions: Beijing Jiaotong University,…
Abstract Cell swelling refers to the thickness expansion and internal force generation that a lithium battery cell exhibits during charge-discharge cycling, arising from electrode structural changes and gas generation…
Abstract Battery failure analysis is the systematic process of identifying and characterizing the root causes of performance degradation and safety incidents in lithium-ion cells. Two categories are distinguished: performance failure—including…
Abstract The limitations of lithium-ion battery fast charging speed arise from six interacting factors: electrode and electrolyte material properties, environmental temperature and humidity, the charging method used (constant current,…
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