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Nippon Electric Glass demonstrates all-solid-state battery capable of 200°C operation and solder reflow
Wednesday, March 18, 2026 at 06:40 AM
Nippon Electric Glass has demonstrated an all-solid-state secondary battery capable of operating at 200°C and withstanding 300°C solder reflow temperatures. This heat resistance allows for the integration of energy storage components directly onto circuit boards using standard semiconductor manufacturing thermal processes.
Context
Nippon Electric Glass (NEG) has demonstrated a breakthrough in energy storage with an all-solid-state sodium-ion battery capable of stable operation at 200°C. This advancement is particularly significant for the semiconductor and electronics industries as the battery can withstand solder reflow processes at temperatures up to 300°C. This thermal resilience allows the battery to be surface-mounted directly onto circuit boards alongside other components using standard automated assembly lines, a major leap over conventional lithium-ion batteries that risk fire or degradation under such heat. The technology leverages NEG’s proprietary glass-ceramic solid electrolyte and oxide-based materials, which eliminate the need for rare metals like lithium or cobalt. By utilizing abundant sodium and iron, NEG addresses both supply chain volatility and safety concerns, as the inorganic oxide structure is non-flammable and does not produce toxic gases. This positioning follows NEG’s broader expansion into the AI supply chain, including the recent launch of its D2 Fiber for high-speed AI servers, signaling a strategic shift toward high-performance, heat-resistant hardware for next-generation computing and industrial environments.
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