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contributor authorGao, Zhenhai
contributor authorRao, Shun
contributor authorWang, Yupeng
contributor authorXiao, Yang
contributor authorLi, Weifeng
contributor authorZhang, Zien
contributor authorYuan, Quan
date accessioned2025-04-21T10:19:03Z
date available2025-04-21T10:19:03Z
date copyright8/6/2024 12:00:00 AM
date issued2024
identifier issn2381-6872
identifier otherjeecs_22_2_020902.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4305927
description abstractEnhancing the safety performance of high-energy-density lithium-ion batteries is crucial for their widespread adoption. Herein, a cost-effective and highly efficient electrolyte additive, triphenyl phosphate (TPP), demonstrates flame-retardant properties by scavenging hydrogen radicals in the flame, thereby inhibiting chain reactions and flame propagation to enhance the safety performance of graphite/LiNi0.8Co0.1Mn0.1O2 (Gr/NCM811) pouch cells. The results reveal that the capacity retention of cells without flame retardants, and those with the addition of 1 wt%, 3 wt%, 5 wt%, and 10 wt% TPP is 96.4%, 92.1%, 84.15%, 40.8%, and 12.4% (at 1/2C 300 cycles), respectively. Furthermore, compared to cells without flame retardants, the highest temperature during thermal runaway (TR) decreases by 8.3%, 26.9%, 35.1%, and 38.8% with the addition of 1 wt%, 3 wt%, 5 wt%, and 10 wt% TPP, respectively. Through comprehensive analysis of the impact of flame-retardant additives on battery electrochemical performance and safety, it is determined that the optimal addition amount is 3 wt%. At this level, there are no significant flames during battery abuse, the triggering temperature for TR increases by 26.6 ℃, and the maximum temperature decreases by 157 ℃. Moreover, even after 300 cycles at 1/2C, a capacity of 814.5 mAh is retained, with a capacity retention rate of 84.1%. This study provides valuable insights into mitigating TR in high-energy-density power batteries.
publisherThe American Society of Mechanical Engineers (ASME)
titleThermal Runaway Characteristics of Ni-Rich Lithium-Ion Batteries Employing Triphenyl Phosphate-Based Electrolytes
typeJournal Paper
journal volume22
journal issue2
journal titleJournal of Electrochemical Energy Conversion and Storage
identifier doi10.1115/1.4066013
journal fristpage20902-1
journal lastpage20902-9
page9
treeJournal of Electrochemical Energy Conversion and Storage:;2024:;volume( 022 ):;issue: 002
contenttypeFulltext


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