1. Introduction As lithium-ion batteries become ubiquitous in electric vehicles, energy density, cycle life, safety, and cost remain the primary concerns. During cycling, cathode active materials — particularly Ni-rich NCM — undergo repeated lithium intercalation and deintercalation, accompanied by anisotropic…
Abstract Double-layer (dual-layer) coating is a graphite anode manufacturing technique in which a top layer of small-particle, rate-capable graphite (near the separator) and a bottom layer of large-particle, high-compaction graphite (near the current collector) are applied to balance power density…
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 integrates the high structural stability of P2-type domains with the high capacity of O3-type configurations, solving the critical rate-stability trade-off in sodium-ion batteries. By combining thermal diffusion regulation with a high-entropy strategy, researchers successfully…
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…
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