On October 24, CATL , the world’s largest EV battery manufacturer, unveiled a groundbreaking innovation in hybrid energy storage: the Freevoy Super Hybrid Battery. As the world’s first hybrid battery offering an all-electric range exceeding 400 kilometers (250 miles) and…
The Spain lithium-ion battery market is entering a new stage of rapid development. The Zaragoza plant of global automotive giant Stellantis is partnering with CATL, the world’s largest EV battery manufacturer, to expand electric vehicle production and build a large-scale…
1. Preface Among the many cathode materials, the high nickel material LiNixM1-xO2 (M = Mn, Co, Al, etc.) exhibits high energy density as well as good cycle life. However there is a decreasing trend in the market share of high…
Abstract Silicon-based anodes—including silicon-carbon (Si/C) composites and carbon-coated silicon monoxide (SiO)—offer theoretical specific capacities far exceeding graphite (372 mAh/g), but massive volume expansion (~300% for Si, ~160% for SiO during full lithiation), poor electrical conductivity, and continuous SEI growth create…
1. Background 1.1 Correlation between single particle compressive strength and material/electrode/cell performance On the microscopic scale, electrodes consist of nano- or micrometer-sized particles. Therefore, the inherent particle properties of electrode materials play a decisive role in the electrochemical performance of…
Abstract Electrode tortuosity (\(\tau\)) is a dimensionless microstructural parameter quantifying how much the actual ionic transport path through a porous battery electrode deviates from a straight line; the MacMullin number (McMullin number, \(N_m = \tau / \varepsilon\)) combines tortuosity 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 negative electrodes and the decomposition and gas production of the electrolyte. When…
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 require an automated system that maintains either a fixed gap or a…
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 certain extent. Since the lithium insertion and removal process of the cathode…
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 (LiCoO₂), LFP (LiFePO₄), and NCM (LiNiₓCoₓMnₓO₂), all paired with graphite anodes. By…
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