Abstract Pure silicon anodes reach a silicon anode volume expansion percentage of approximately 280% during full lithiation — roughly 28 times greater than graphite’s ~10% — making silicon anode swelling the dominant mechanical challenge in high-capacity lithium-ion battery design. This…
1. Research Background In recent years, with the rapid expansion of the new energy vehicle market powered by lithium-ion batteries (LIBs), the number of retired LIBs is expected to increase significantly over the next 5–10 years. Therefore, lithium battery recycling…
1. Abstract This study characterizes thickness expansion during formation of silicon-carbon composite cells with different silicon loadings (450 Si/C vs 800 Si/C) using an in-situ cell swelling tester (IEST SWE2110). Continuous thickness, voltage, current and capacity monitoring during controlled…
1. Abstract The expansion behavior of silicon-carbon cells is primarily attributed to the volumetric expansion of the silicon component. Excessive accumulation of irreversible expansion during cell cycling can lead to significant capacity degradation. Current industry strategies for enhancing the cycling…
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…
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