Self-Discharge and Calendar Aging Behavior of Li-Ion and Na-Ion Cells

IF 4.3 3区材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

ACS Applied Electronic Materials Pub Date : 2024-08-08 DOI:10.1149/1945-7111/ad6cfd

Luiza Streck, T. Roth, Hannah Bosch, Cedric Kirst, Mathias Rehm, Peter Keil, A. Jossen

{"title":"Self-Discharge and Calendar Aging Behavior of Li-Ion and Na-Ion Cells","authors":"Luiza Streck, T. Roth, Hannah Bosch, Cedric Kirst, Mathias Rehm, Peter Keil, A. Jossen","doi":"10.1149/1945-7111/ad6cfd","DOIUrl":null,"url":null,"abstract":"\n The calendar aging and self-discharge behavior of Na-Ion cells containing a layered oxide NaNi1/3Fe1/3Mn1/3 (NFM) cathode were investigated and compared to two Li-Ion cell chemistries, G/LiFePO4 (LFP) and SiG/LiNi0.8Mn0.1Co0.1O2 (NMC811). The self-discharge measurements were performed via voltage hold experiments at different states of charge (10%, 40%, 50%, 70%, 90%, and 100%) and temperatures (25°C, 40°C, and 55°C). A high-precision coulometry analysis was conducted to investigate the coulombic efficiency (CE), differential voltage analysis (DVA), and end-point slippage. The results show that the Na-Ion cells present a similar self-discharge behavior to the NMC811 Li-Ion cells. In addition, via CE and end-point slippage analysis, strong reversible reactions were observed for the Na-Ion cells. Despite the poor CE values, the cells presented a low capacity loss. Post-mortem analysis showed sodium plating on the edges of all the SOCs investigated. The LFP results presented mainly calendar losses from lithium inventory loss with almost no cathode-related degradation. At high SOCs, both transition metal cathodes, NMC811 Li-Ion and NFM Na-Ion, exhibited more cathode-related processes dominating the self-discharge current and presumably improving the capacity retention due to electrolyte oxidation. Finally, the Na-Ion cells showed anode overhang equalization effects like Li-Ion cells.","PeriodicalId":3,"journal":{"name":"ACS Applied Electronic Materials","volume":"76 4","pages":""},"PeriodicalIF":4.3000,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Electronic Materials","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1149/1945-7111/ad6cfd","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}

引用次数: 0

Abstract

The calendar aging and self-discharge behavior of Na-Ion cells containing a layered oxide NaNi1/3Fe1/3Mn1/3 (NFM) cathode were investigated and compared to two Li-Ion cell chemistries, G/LiFePO4 (LFP) and SiG/LiNi0.8Mn0.1Co0.1O2 (NMC811). The self-discharge measurements were performed via voltage hold experiments at different states of charge (10%, 40%, 50%, 70%, 90%, and 100%) and temperatures (25°C, 40°C, and 55°C). A high-precision coulometry analysis was conducted to investigate the coulombic efficiency (CE), differential voltage analysis (DVA), and end-point slippage. The results show that the Na-Ion cells present a similar self-discharge behavior to the NMC811 Li-Ion cells. In addition, via CE and end-point slippage analysis, strong reversible reactions were observed for the Na-Ion cells. Despite the poor CE values, the cells presented a low capacity loss. Post-mortem analysis showed sodium plating on the edges of all the SOCs investigated. The LFP results presented mainly calendar losses from lithium inventory loss with almost no cathode-related degradation. At high SOCs, both transition metal cathodes, NMC811 Li-Ion and NFM Na-Ion, exhibited more cathode-related processes dominating the self-discharge current and presumably improving the capacity retention due to electrolyte oxidation. Finally, the Na-Ion cells showed anode overhang equalization effects like Li-Ion cells.

查看原文本刊更多论文

锂离子电池和钠离子电池的自放电和日历老化行为

研究了含有层状氧化物 NaNi1/3Fe1/3Mn1/3（NFM）阴极的钠离子电池的日历老化和自放电行为，并将其与两种锂离子电池化学成分（G/LiFePO4（LFP）和 SiG/LiNi0.8Mn0.1Co0.1O2 (NMC811)）进行了比较。自放电测量是在不同的充电状态（10%、40%、50%、70%、90% 和 100% ）和温度（25°C、40°C 和 55°C）下通过电压保持实验进行的。为了研究库仑效率（CE）、差分电压分析（DVA）和终点滑移，还进行了高精度库仑测量分析。结果表明，钠离子电池的自放电行为与 NMC811 锂离子电池相似。此外，通过 CE 和端点滑移分析，还观察到钠离子电池发生了强烈的可逆反应。尽管 CE 值较差，但电池的容量损失较低。死后分析表明，所有被研究的 SOC 边缘都有钠镀层。LFP 结果主要显示了锂库存损失造成的日历损失，几乎没有与正极相关的降解。在高 SOC 条件下，NMC811 锂离子电池和 NFM 钠离子电池这两种过渡金属阴极都显示出更多与阴极相关的过程，这些过程主导了自放电电流，并可能由于电解质氧化而提高了容量保持率。最后，与锂离子电池一样， Na 离子电池也表现出阳极悬垂均衡效应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

ACS Applied Electronic Materials Multiple-

CiteScore

7.20

自引率

4.30%

发文量

567

期刊介绍： ACS Applied Electronic Materials is an interdisciplinary journal publishing original research covering all aspects of electronic materials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials science, engineering, optics, physics, and chemistry into important applications of electronic materials. Sample research topics that span the journal's scope are inorganic, organic, ionic and polymeric materials with properties that include conducting, semiconducting, superconducting, insulating, dielectric, magnetic, optoelectronic, piezoelectric, ferroelectric and thermoelectric. Indexed/Abstracted： Web of Science SCIE Scopus CAS INSPEC Portico