1. Abstract Lithium plating is a critical failure mode during fast charging—especially at low temperatures—because plated Li reduces capacity, forms electrically “dead” Li, consumes electrolyte via SEI formation, and can grow dendrites that puncture separators. This application describes a practical,…
Abstract Pouch cell swelling during electrochemical cycling is non-uniform: expansion force peaks in the center of the cell and is substantially weaker at the heat-sealed edges and tab regions. To measure pressure in pouch cell surfaces with spatial resolution, a thin-film pouch…
Abstract Capacity decay and loss occur during lithium-ion battery cycling, and researchers worldwide have extensively studied its underlying mechanisms. Known contributing factors include CEI/SEI passivation film formation on cathode and anode surfaces, metallic lithium deposition, dissolution of electrode active materials,…
Abstract Compaction density — also referred to as press density in some contexts — measures the mass per unit volume of an electrode powder under applied pressure, and is one of the most critical parameters for evaluating electrode material suitability…
Abstract Powder compaction density and powder conductivity of lithium-ion battery electrode powders differ significantly depending on whether they are measured under applied pressure (pressed-state, or loading, density) or after pressure release (unloaded, relaxed-state density). At approximately 200 MPa, LFP cathode powder shows a…
Authors: Dong-Liang Peng (Prof.), Qingshui Xie (Senior Researcher), Weibin Guo (first author), et al. Source: A Universal Strategy toward the Precise Regulation of Initial Coulombic Efficiency of Li-Rich Mn-Based Cathode Materials, Adv.Mater., 2021, DOI:10.1002 1. Abstract We report an oleic-acid…
1. Introduction With the rapid development of the lithium-ion battery industry, silicon-based anode materials have gained attention due to their high theoretical specific capacity. Silicon-based slurry typically use deionized water as a solvent, with techniques like surface modification and elemental…
1. Introduction Lithium-ion batteries power a wide array of applications, from portable electronics to electric vehicles and grid storage. A critical challenge across these fields is enhancing fast-charging capability, which is intrinsically linked to rate performance. This performance is governed…
Abstract Hard carbon electrical conductivity measurement is performed using the four-probe method in a controlled powder resistivity tester to eliminate contact resistance artifacts — critical because hard carbon’s lower resistance makes the two-probe method unreliable. In this study, the IEST PRCD3100 applied 10–200…
Abstract LMFP (lithium manganese iron phosphate, LiMnxFe1-xPO4) is an olivine-structure cathode material for lithium-ion batteries that extends LiFePO₄ (LFP) by partially substituting Mn for Fe — raising the electrode potential from LFP’s 3.4 V to approximately 4.1 V vs. Li⁺/Li…
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