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Fast-charge C-rate: how high can it go before cells degrade
The fast-charge C-rate limit is a function of cell temperature and SOC. Preheating and a limited charge window are what allow high C-rates.
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Battery SOH estimation: capacity test, internal resistance or EIS
Capacity tests give the reference, DCIR tracks in-service trends, EIS diagnoses causes. First decide whether capacity or resistance is the bottleneck.
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Lithium-metal and lithium-sulfur cells: where they beat lithium-ion first
Lithium-metal and lithium-sulfur gain Wh/kg but give up life and volume. Aircraft, where pack-level weight gain beats life cost, come first.
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Battery thermal management: air, liquid or refrigerant direct cooling
Choose thermal management by cell heat and allowable cell-to-cell spread: airflow limits, liquid preheating, HVAC sharing for direct cooling.
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EV Battery Chemistries Compared: NCM vs LFP, What Actually Differs
How the two cathode chemistries, NCM (nickel-cobalt-manganese) and LFP (lithium iron phosphate), split EV driving range, cycle life, and safety.
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Dry vs wet electrode processing: when dry wins on power and energy
Wet-process energy sits in drying ovens and NMP recovery. Dry processing removes both, wins on thick cathodes, and shifts explosion protection to dust.
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European Battery Bankruptcies: Is Now the Right Time for Korean Cell Makers to Expand in Europe?
As Varta follows Northvolt into insolvency, a comparison of expansion timing in Europe for Korean cell makers based on whether they are already present.
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Solid Electrolyte vs. Aqueous Zinc Batteries: Two Strategies Split by August 2026 Investments
A KRW 23 billion Series C for solid electrolytes and a KRW 22 billion Series A for aqueous zinc batteries: both next-generation, but aimed at different positions.
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US Black Mass Export Controls: Is Now the Time to Bring Battery Recycling In-House in Korea?
With the US requiring black mass to be sold to domestic buyers first from 27 August 2026, is domestic in-house recycling or supply route diversification the better choice?
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ESS Battery Racks: When Are Prismatic Cells Better Than 46-Series Cylindrical?
The split into 46-series cylindrical cells for EVs and prismatic cells for ESS, compared from the standpoint of BMS communication load and cooling interface rather than mechanical strength.