Abstract Lithium battery failure analysis is a systematic, multi-scale diagnostic process that identifies the root causes of performance degradation — including capacity fade, impedance rise, and safety events — by decomposing cell behavior into distinct mechanical, electrochemical, and structural failure…
Abstract B/Zr co-doping is a lattice-bulk regulation strategy for stabilizing ultra-high-nickel single-crystal cathodes by coordinating bulk lattice reinforcement with surface structural protection. In this Advanced Powder Materials (DOI: 10.1016) study, the authors investigates single-crystalline $LiNi_{0.92}Co_{0.04}Mn_{0.04}O_2$ (SNCM) and develops SCNCM@0.5%Zr/B to…
Abstract Solid electrolyte electronic conductivity has received far less attention than ionic conductivity, but even a small electronic leakage current can cause physical self-discharge in all-solid-state batteries (ASSBs). In a Nature Energy study, Changhong Wang, Xueliang Sun, and their colleagues…
Abstract A research team led by Prof. Fan Xinming at Central South University and Prof. Yang Yong at Xiamen University investigated the chemo-mechanical degradation of LiNi₀.₉₂Co₀.₀₄Mn₀.₀₄O₂ (SC-N92) single-crystal Ni-rich cathodes cycled at elevated cutoff voltages. The study was published in…
Abstract The effect of SOC on NCM cathode particle crushing strength is both dramatic and nonlinear: as the state of charge increases from 0% to 100%, the single-particle crushing strength of polycrystalline NCM cathode material drops from ~40 MPa to…
Abstract Separator ionic conductivity — a quantitative metric (mS cm⁻¹) describing lithium-ion transport through the electrolyte-filled separator — directly governs a cell’s internal impedance, rate capability, and long-term cycle stability. This study validates the separator ionic conductivity and battery cycle…
Abstract Silicon anodes for all-solid-state batteries must accommodate large volume changes while maintaining stable solid-solid contact and rapid Li-ion transport. Conventional encapsulation can preserve particle integrity but impede interparticle ion transport, whereas uncontrolled electrochemical sintering can restore contact but also…
Abstract A powder compression test is a mechanical characterization method that applies stepwise pressure to an electrode powder bed and records the resulting thickness change to separate reversible (elastic) deformation from irreversible (plastic) deformation. Using the IEST PRCD Powder Resistivity…
Abstract Coherent twin boundaries (CTBs) are periodic crystallographic interfaces introduced into a Li-rich cathode — specifically a Li-rich layered oxide (LRO) — through staged-temperature calcination, and they address the three limiting factors of a thick electrode design: restricted two-dimensional lithium-ion…
Abstract In-situ swelling testing of silicon-carbon pouch cells is an important characterization method in silicon-anode battery development. However, reproducible and engineering-relevant results depend strongly on the mechanical boundary conditions applied during testing and how closely they represent the compliant constraints…
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