Mechanistic decoupling of electrolyte-derived gas evolution and solid-phase heat release during thermal runaway of high-energy-density NCA lithium-ion batteries

2026-08-12

PRE

Xin-Hao Huang

Huan-Ting Lin

Yi-Hung Chung

Chi-Min Shu *

DOI：10.1016/j.jpowsour.2026.241069

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• TR energy is governed by electrode-solid-phase redox, not by the electrolyte. • Removing 1.7 L of volatiles does not reduce TR; the electrolyte chemical energy contributes only ∼8.4%. • Gas generation shifts to kinetic chemical decomposition at 130 °C. • Safety strategies must prioritize stabilizing the electrode lattice oxygen.

Mechanistic decoupling of electrolyte-derived gas evolution and solid-phase heat release during thermal runaway of high-energy-density NCA lithium-ion batteries

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