电压和温度对低钴锂离子电池阴极降解的影响

IF 3.2 Q2 CHEMISTRY, PHYSICAL
Energy advances Pub Date : 2024-12-10 DOI:10.1039/D4YA00530A
Hernando J. Gonzalez Malabet, Megan Gober, Prehit Patel, Alex L’Antigua, Austin Gabhart, Joseah Amai, Xianghui Xiao and George J. Nelson
{"title":"电压和温度对低钴锂离子电池阴极降解的影响","authors":"Hernando J. Gonzalez Malabet, Megan Gober, Prehit Patel, Alex L’Antigua, Austin Gabhart, Joseah Amai, Xianghui Xiao and George J. Nelson","doi":"10.1039/D4YA00530A","DOIUrl":null,"url":null,"abstract":"<p >Degradation of low cobalt lithium-ion cathodes was tested using a full factorial combination of upper cut-off voltage (4.0 V and 4.3 V <em>vs.</em> Li/Li<small><sup>+</sup></small>) and operating temperature (25 °C and 60 °C). Half-cell batteries were analyzed with electrochemical and microstructural characterization methods. Electrochemical performance was assessed with galvanostatic cycling, cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS) supported by distribution of relaxation times (DRT) analysis. Electrode microstructure was characterized with scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray absorption near edge structure (XANES) imaging. Higher cut-off voltage cycling shows presence of NiO<small><sub><em>x</em></sub></small> formation, a low diffusivity rock-salt phase, in both CV and XRD data. XRD patterns confirmed that the rock-salt phase was beginning to form at the low cut-off voltage at high temperature, but in much lower intensity than at the high cut-off voltage. Higher temperature accelerates degradation processes at both voltages. Degradation factors at high temperature include NiO<small><sub><em>x</em></sub></small> formation, cathode material dissolution, and electrolyte decomposition. SEM analysis suggests that supporting phases may isolate and disconnect active material particles reducing capacity retention and battery life cycle. DRT analysis and XANES imaging show that both high temperature samples revealed a NiO<small><sub><em>x</em></sub></small> phase based on an increased diffusive impedance and a visible shift in the XANES spectra. The low cut-off voltage, high temperature sample showed a split peak and shift to lower energies indicating early formation of the NiO<small><sub><em>x</em></sub></small> phase. The diffusive impedance, which hinders intercalation and deintercalation, is driven by the formation of the NiO<small><sub><em>x</em></sub></small> phase. While primarily driven by cut-off voltage, elevated temperature also contributes to this degradation mechanism.</p>","PeriodicalId":72913,"journal":{"name":"Energy advances","volume":" 2","pages":" 304-319"},"PeriodicalIF":3.2000,"publicationDate":"2024-12-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/ya/d4ya00530a?page=search","citationCount":"0","resultStr":"{\"title\":\"Voltage and temperature effects on low cobalt lithium-ion battery cathode degradation†\",\"authors\":\"Hernando J. Gonzalez Malabet, Megan Gober, Prehit Patel, Alex L’Antigua, Austin Gabhart, Joseah Amai, Xianghui Xiao and George J. Nelson\",\"doi\":\"10.1039/D4YA00530A\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >Degradation of low cobalt lithium-ion cathodes was tested using a full factorial combination of upper cut-off voltage (4.0 V and 4.3 V <em>vs.</em> Li/Li<small><sup>+</sup></small>) and operating temperature (25 °C and 60 °C). Half-cell batteries were analyzed with electrochemical and microstructural characterization methods. Electrochemical performance was assessed with galvanostatic cycling, cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS) supported by distribution of relaxation times (DRT) analysis. Electrode microstructure was characterized with scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray absorption near edge structure (XANES) imaging. Higher cut-off voltage cycling shows presence of NiO<small><sub><em>x</em></sub></small> formation, a low diffusivity rock-salt phase, in both CV and XRD data. XRD patterns confirmed that the rock-salt phase was beginning to form at the low cut-off voltage at high temperature, but in much lower intensity than at the high cut-off voltage. Higher temperature accelerates degradation processes at both voltages. Degradation factors at high temperature include NiO<small><sub><em>x</em></sub></small> formation, cathode material dissolution, and electrolyte decomposition. SEM analysis suggests that supporting phases may isolate and disconnect active material particles reducing capacity retention and battery life cycle. DRT analysis and XANES imaging show that both high temperature samples revealed a NiO<small><sub><em>x</em></sub></small> phase based on an increased diffusive impedance and a visible shift in the XANES spectra. The low cut-off voltage, high temperature sample showed a split peak and shift to lower energies indicating early formation of the NiO<small><sub><em>x</em></sub></small> phase. The diffusive impedance, which hinders intercalation and deintercalation, is driven by the formation of the NiO<small><sub><em>x</em></sub></small> phase. While primarily driven by cut-off voltage, elevated temperature also contributes to this degradation mechanism.</p>\",\"PeriodicalId\":72913,\"journal\":{\"name\":\"Energy advances\",\"volume\":\" 2\",\"pages\":\" 304-319\"},\"PeriodicalIF\":3.2000,\"publicationDate\":\"2024-12-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://pubs.rsc.org/en/content/articlepdf/2025/ya/d4ya00530a?page=search\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Energy advances\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2025/ya/d4ya00530a\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Energy advances","FirstCategoryId":"1085","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2025/ya/d4ya00530a","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0

摘要

采用上截止电压(4.0 V和4.3 V vs. Li/Li+)和工作温度(25°C和60°C)的全因子组合测试了低钴锂离子阴极的降解。采用电化学和微观结构表征方法对半电池进行了分析。通过恒流循环、循环伏安法(CV)和电化学阻抗谱(EIS)以及弛豫时间分布(DRT)分析来评估电化学性能。采用扫描电镜(SEM)、x射线衍射(XRD)和x射线吸收近边结构(XANES)成像对电极微观结构进行了表征。在CV和XRD数据中,较高的截止电压循环表明存在NiOx地层,这是一种低扩散率的岩盐相。XRD图谱证实,在高温低截止电压下,岩盐相开始形成,但强度远低于高截止电压下。在两种电压下,较高的温度加速了降解过程。高温下的降解因素包括NiOx的形成、阴极材料的溶解和电解质的分解。扫描电镜分析表明,支持相可能会隔离和断开活性物质颗粒,降低容量保持和电池寿命周期。DRT分析和XANES成像表明,高温样品的扩散阻抗增加,XANES光谱可见位移,显示出NiOx相。在低截止电压、高温条件下,样品出现分裂峰,并向较低能量偏移,表明NiOx相形成较早。扩散阻抗是由NiOx相的形成驱动的,它阻碍了插层和脱插。虽然主要由截止电压驱动,但升高的温度也有助于这种降解机制。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Voltage and temperature effects on low cobalt lithium-ion battery cathode degradation†

Voltage and temperature effects on low cobalt lithium-ion battery cathode degradation†

Degradation of low cobalt lithium-ion cathodes was tested using a full factorial combination of upper cut-off voltage (4.0 V and 4.3 V vs. Li/Li+) and operating temperature (25 °C and 60 °C). Half-cell batteries were analyzed with electrochemical and microstructural characterization methods. Electrochemical performance was assessed with galvanostatic cycling, cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS) supported by distribution of relaxation times (DRT) analysis. Electrode microstructure was characterized with scanning electron microscopy (SEM), X-ray diffraction (XRD), and X-ray absorption near edge structure (XANES) imaging. Higher cut-off voltage cycling shows presence of NiOx formation, a low diffusivity rock-salt phase, in both CV and XRD data. XRD patterns confirmed that the rock-salt phase was beginning to form at the low cut-off voltage at high temperature, but in much lower intensity than at the high cut-off voltage. Higher temperature accelerates degradation processes at both voltages. Degradation factors at high temperature include NiOx formation, cathode material dissolution, and electrolyte decomposition. SEM analysis suggests that supporting phases may isolate and disconnect active material particles reducing capacity retention and battery life cycle. DRT analysis and XANES imaging show that both high temperature samples revealed a NiOx phase based on an increased diffusive impedance and a visible shift in the XANES spectra. The low cut-off voltage, high temperature sample showed a split peak and shift to lower energies indicating early formation of the NiOx phase. The diffusive impedance, which hinders intercalation and deintercalation, is driven by the formation of the NiOx phase. While primarily driven by cut-off voltage, elevated temperature also contributes to this degradation mechanism.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
CiteScore
1.80
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信