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…
Abstract Separator ionic conductivity (symbol \(\sigma\), unit S/cm) quantifies how readily Li\(^+\) ions transport through a battery separator — a key determinant of cell power and rate capability. The ionic conductivity calculation formula is \(\sigma = d / (R \times…
1. Background Polystyrene microspheres (PS microspheres) represent a significant research focus in polymer science due to their unique physicochemical properties, which make them highly suitable for a variety of applications in biochemistry, sensing, catalysis, and more. These microspheres are synthesized…
Journal: Energy Materials Organization: School of Materials, Xiamen University, IEST Instrument. Authors: Jie Zhu, Yunfan Wu, Hongyi Zhang, Xujia Xie, Yong Yang, Hongyu Peng, Xiaochun Liang, Qiongqiong Qi, Weibin Lin, Dongliang Peng, Laisen Wang*, Jie Lin*. Correspondence Authors: WANG Laisen,…
Abstract Li-rich Mn-based cathodes deliver exceptional specific capacity because they combine cationic and anionic (lattice oxygen) redox activity. However, lattice-oxygen participation at high voltages generates unstable electronic holes and reactive O²⁻ species that ultimately form O–O dimers and release O₂ —…
Authors: Haoyu Wang (First Author), Jinyang Dong, Yuefeng Su, Lai Chen (Corresponding Authors) Affiliation: Beijing Institute of Technology Equipment Used: IEST PRCD3100 Powder Resistivity & Compaction Density Tester, SPFT-2000 Single Particle Force Testing System 1. Abstract We report a rapid, scalable…
On December 24th, CATL officially launched the CATL Bedrock Chassis, the world’s first ultra-safe skateboard chassis. With its outstanding performance of withstanding 120 km/h frontal impact without catching fire or exploding, CATL’s Bedrock Chassis sets a new standard for intelligent chassis safety,…
1. Abstract Electrolyte wetting is a critical process for lithium-ion cell performance: it controls ionic access to active material, influences rate capability and cycling, and affects initial manufacturing yield. This study uses a capillary-based electrolyte wetting test System (EWS1100) to…
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