1. Article Information Title: Rate-Dependent Failure Behavior Regulation of LiFePO4 Cathode via Functional Interface Engineering First Author: Rui Tang Corresponding Authors: Jinyang Dong*, Yuefeng Su*, Lai Chen* Affiliations: Beijing Institute of Technology; Beijing Institute of Technology Chongqing Innovation Center; China…
1. Introduction Recently, BYD’s “Megawatt Flash Charging” technology has attracted significant attention in the lithium battery field. Its “5-minute charge for 800-mile range” oil-electric equivalent technology is as strategic as a nuclear bomb. The “Megawatt Flash Charging” technology can boost…
Abstract Conductive additive content in a lithium battery electrode has an optimal range rather than a “more is better” relationship: too little additive leaves electron pathways broken, while too much increases slurry viscosity, causes coating defects, and raises cost without…
1. Introduction The electric vehicle industry has reached a pivotal moment with BYD‘s introduction of the Super e-Platform. This integrated architecture represents a significant technological leap, moving beyond incremental improvements to redefine the benchmarks for charging speed, power density, and…
1. A Global Gathering for Battery Innovation From March 17-20, 2025, the global energy industry converged at the Loews Royal Pacific Resort in Orlando, Florida, for the 42nd Florida International Battery Seminar & Exhibition. This premier event serves as a critical international…
Abstract The Tesla 4680 battery cell achieves a gravimetric energy density of 241 Wh/kg and a volumetric energy density of 643.3 Wh/L, using NCM811 cathode chemistry in a tabless cylindrical format (46 mm × 80 mm). The BYD Blade battery delivers 160 Wh/kg and 355 Wh/L using LFP chemistry in an…
1. Introduction In the rapidly evolving new energy sector, continuous development of novel materials necessitates comprehensive testing. Beyond routine physicochemical characterization (particle size, BET, XRD, SEM, etc.), preliminary electrochemical performance evaluation is critical for assessing materials and manufacturing processes. As…
1. Abstract Oxide solid electrolytes are a leading candidate for high-energy, high-safety next-generation batteries. This article presents IEST’s practical solutions for rapid, reliable oxide solid electrolyte characterization — from pellet fabrication and high-pressure densification to high-frequency impedance measurement and semi-solid…
1. Background With the continuous development of science and technology, research in the field of materials science is becoming increasingly in-depth. Among them, hollow sphere materials have shown broad application prospects in many fields due to their unique structure and…
Abstract Battery failure analysis using EIS (electrochemical impedance spectroscopy) testing is a non-destructive method that identifies lithium-ion battery degradation modes — including SEI layer thickening, charge transfer resistance increase, lithium dendrite growth, and electrolyte decomposition — by measuring impedance across a…
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