At the 2024 China Auto Show, CATL released the world’s first 4C ultra-fast charging CATL lifepo4 battery with a range of more than 1,000 kilometers – Shenxing PLUS. Within 8 months since the launch of the Shenxing ultra-fast charging battery in…
Abstract Battery electrolyte viscosity—the resistance of a liquid electrolyte to flow—is the primary physical parameter controlling capillary wettability of electrode sheets during lithium-ion cell manufacturing. Lower electrolyte viscosity accelerates infiltration of the electrode pore network, reducing dry spots and improving…
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 from electrolyte decomposition. A battery cell swelling test quantifies this behavior using one of…
Abstract A model coin cell is a test-format battery cell designed to closely reproduce the coin cell voltage curve, coulombic efficiency, and thickness expansion behavior of finished cells, while allowing much faster assembly and screening than a full pouch or cylindrical…
Abstract Silicon-based anodes face five principal barriers to commercialization: volume expansion reaching 300% during full lithiation, gas evolution during slurry processing, electrical conductivity approximately 108 times lower than carbon, initial Coulombic efficiency (ICE) as low as 70–90%, and the need…
Abstract Graphite anode volume expansion during lithiation in lithium-ion batteries is typically 10–15% by thickness, while silicon-based anodes can undergo up to 300% volume expansion at full lithiation. Cathode materials expand in the opposite direction from what might be expected: NCM and LCO cathodes also expand during…
Abstract A silicon anode binder with dynamic, reversible cross-links can directly address the structural failure mode that limits silicon anodes: repeated particle fracture from ~300% volume expansion during lithiation. Researchers at Nanjing University of Technology developed TA-c-PAA—a self-healing binder formed by in-situ polymerization…
1. Abstract Accurate measurement of separator ion conductivity is essential for predicting cell rate capability, internal resistance, and overall safety. This application note describes a high-throughput, multi-channel workflow for ion conductivity measurement using a purpose-built EIS test platform. The procedure—vacuum…
1. Preface The multiplier performance of the battery affects the speed and life of the battery charge and discharge. How to reduce the battery resistance and improve the multiplier performance of the battery is the direction that the battery researchers…
1. Preface Model coin cell battery is a kind of battery used by lithium researchers, it is composed of a single layer of positive and negative electrode and diaphragm, but due to the binding of the positive and negative electrode…
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