1. Introduction Silicon stands out as a highly promising anode material for lithium‑ion batteries due to its theoretical specific capacity of 4200 mAh g⁻¹ and environmental friendliness. However, its practical application faces severe obstacles: high volume expansion (>300%), low electronic conductivity, and…
Abstract A P2/O3 mixed phase cathode is designed to combine the rapid Na-ion transport of P2 domains with the high initial sodium content and high-voltage stability of O3 domains, improving the balance among capacity, rate capability, and cycling stability in…
1. Introduction As the new energy market expands and application scenarios diversify, sodium‑ion batteries have attracted considerable attention due to the abundant sodium resources and low material cost. They show strong potential in large‑scale energy storage, low‑speed electric vehicles, and…
Abstract Dynamic EIS (DEIS) is an electrochemical measurement technique that captures battery impedance spectra in real time while the cell is actively charging or discharging — eliminating the steady-state requirement of conventional static EIS and revealing transient electrochemical phenomena that…
IEST Instruments, a leading provider of advanced lithium battery testing and automation solutions, is excited to participate in The 43rd International Battery Seminar 2026, one of the world’s most influential and longest-running events in the battery industry. The event will…
IEST Instruments, a leading provider of advanced lithium battery testing and automation solutions, made a strong impact on Day 1 of Battery Japan 2026 (the 20th International Rechargeable Battery Expo), one of the world’s premier platforms for rechargeable battery technology…
IEST Instruments Successfully Participates in InterBattery 2026, Empowering the Future of Battery R&D and Manufacturing. IEST Instruments, a leading provider of advanced lithium battery testing and automation solutions, made a strong impact at InterBattery 2026, one of the world’s premier…
Abstract Direct Current Resistance (DCR), also referred to as DCIR (Direct Current Internal Resistance), is a core metric that quantifies a lithium-ion battery’s total internal resistance under DC load, governing charge/discharge rate capability, heat generation, and safety. DCR is not a…
Abstract A PAA binder (poly(acrylic acid)) outperforms conventional CMC/SBR binder in silicon-carbon (Si/C) anode electrodes on two measurable, electrode-level properties: electrical conductivity and compression behavior. This study uses the IEST Electrode Sheet Resistance Tester (BER2500) to conduct a comparative evaluation…
1. The 4680 Format: Promise and the Expansion Challenge The 4680 cylindrical cell, championed by Tesla, represents a next-generation lithium battery technology. Its larger format (46mm diameter, 80mm height) aims to optimize energy density, power, and cost, reshaping the landscape…
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