Details

Autor(en) / Beteiligte

• Zhang, Haitang
• Wu, Xiaohong
• Li, Zhengang
• Zou, Yeguo
• Wang, Junhao
• Yu, Xiaoyu
• Chen, Jianken
• Xue, Jiyuan
• Zhang, Baodan
• Tian, Jing‐Hua
• Hong, Yu‐hao
• Qiao, Yu
• Sun, Shi‐Gang

Titel

Full‐Dimensional Analysis of Gaseous Products Within Li‐Ion Batteries by On‐Line GC‐BID/MS

Ist Teil von

• Advanced energy materials, 2024-06, Vol.14 (24), p.n/a

Ort / Verlag

Weinheim: Wiley Subscription Services, Inc

Erscheinungsjahr

2024

Quelle

Wiley Online Library All Journals

Beschreibungen/Notizen

• The gas release within Li‐ion batteries, particularly during cycling and storage, can result in rapid performance degradation and potential safety hazards. However, this area has not garnered sufficient attention until now, primarily because the gassing information collected by typical OEMS/DEMS is quite limited and even inaccurate. Herein, for the first time, a state‐of‐the‐art on‐line GC‐BID/MS to full‐dimensionally analyze the gassing behavior within both lab‐scale coin‐type cell (in situ mode) and industry‐scale pouch‐type cell (operando mode) is originally designed/constructed. Not limited to common permanent gases (e.g. H2, CO, etc.) detected by online GC‐BID, but also complicated/various (semi‐)volatile products are identified/quantified by online GC‐MS. Based on the real‐time evolution information of water, alcohols, aldehydes, ethers, esters, and hydrocarbons, the decomposition mechanisms of electrolyte on both graphite anode and/or LCO cathode sides is further supplemented/perfected. Moreover, at the level of the device, series derivative/crosstalk reactions induced by trapped/accumulated gaseous species are unveiled in practical pouch‐cell. The gassing information collected by typical OEMS is quite limited and even inaccurate. Herein, for the first time, a state‐of‐the‐art on‐line GC‐BID/MS to full‐dimensionally analyze the gassing behavior within both lab‐scale coin‐type cell (in situ mode) and industry‐scale pouch‐type cell (operando mode), ranging from nine common permanent gases to complicated/various (semi‐)volatile products is originally/innovatively designed/constructed.