Comparison of monitoring gas evolution in commercial Li-ion batteries: Differential electrochemical mass spectrometry versus operando internal non-destructive gas sensors

IF 2.8 3区化学 Q3 CHEMISTRY, PHYSICAL

Chemical Physics Letters Pub Date : 2025-07-09 DOI:10.1016/j.cplett.2025.142284

Siqi Lyu , Kai-Lun Zhang , Yaoda Xin , Na Li , Xiao-Hua Guo , Zhen Liang , Yannan Zhang , Hao-Sen Chen , Wei-Li Song

引用次数: 0

Abstract

Lithium-ion batteries (LIBs) face capacity degradation and safety risks from internal gas evolution. This study compares differential electrochemical mass spectrometry (DEMS) and in-situ non-dispersive infrared (NDIR) gas sensors for monitoring gas in graphite/NMC811 batteries. DEMS enables real-time gas detection but relies on carrier gases and causes 49.7 % capacity loss in small cells. NDIR sensors in 800 mAh pouch cells offer continuous, non-destructive monitoring with <1 % capacity loss, detecting gas accumulation and consumption. NDIR proves robust for operando gas monitoring in high-capacity LIBs, aiding failure mechanism analysis and safety improvement.

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商用锂离子电池中气体演化监测的比较：差分电化学质谱法与operando内部无损气体传感器

锂离子电池（LIBs）面临容量下降和内部气体演化带来的安全风险。本研究比较了差分电化学质谱（dem）和原位非色散红外（NDIR）气体传感器用于监测石墨/NMC811电池中的气体。dem能够实现实时气体检测，但依赖于载气，并且在小型蜂窝中导致49.7%的容量损失。800毫安时的NDIR传感器在容量损失<； 1%的情况下提供连续、无损的监测，检测气体积聚和消耗。事实证明，NDIR在大容量lib的操作气体监测中具有很强的鲁棒性，有助于分析失效机理和提高安全性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Chemical Physics Letters 化学-物理：原子、分子和化学物理

CiteScore

5.70

自引率

3.60%

发文量

798

审稿时长

33 days

期刊介绍： Chemical Physics Letters has an open access mirror journal, Chemical Physics Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Chemical Physics Letters publishes brief reports on molecules, interfaces, condensed phases, nanomaterials and nanostructures, polymers, biomolecular systems, and energy conversion and storage. Criteria for publication are quality, urgency and impact. Further, experimental results reported in the journal have direct relevance for theory, and theoretical developments or non-routine computations relate directly to experiment. Manuscripts must satisfy these criteria and should not be minor extensions of previous work.