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La4NiLiO8-Shielded Layered Cathode Materials for Emerging High-Performance Safe Batteries
Yasmin, A; Shehzad, MA; Wang, JR; He, XD; Ding, X; Wang, S; Wen, ZY; Chen, CH
2020-01-08
Source PublicationACS APPLIED MATERIALS & INTERFACES
ISSN1944-8244
Issue1Pages:826
SubtypeArticle
AbstractLow theoretical capacities of the commercial cathode materials (olivine: similar to 70 mA h g(-1) and spinel: similar to 140 mA h g(-1)) dictate the need for higher energy density alternates such as nickel-rich (denotes as NCM) materials with a theoretical capacity of similar to 270 mA h g(-1). However, low conductivity and the bulk degradation after direct contact with liquid electrolytes, especially at temperatures higher than 50 degrees C, are the biggest issues to resolve for safe use and confident commercialization of the NCM materials. In this context, we first report "La4NiLiP8 shields" to simultaneously boost charge conduction characteristics and circumvent the electrolytic degradation of NCM. Consequently, the La4NiLiO8-shielded LiNi0.5Co0.2Mn0.3O2 (LSNS) not only offers a 4.1X less charge transfer resistance and significantly higher discharge capacity (219.7 mA h g(-1)) than the nonshielded NCM (187 mA h g(-1)) and theoretical capacities of commercial cathode materials but also maintains more than 91.7% of capacity retention at 25 degrees C after 500 cycles and 84.2% at 60 degrees C after 200 cycles. In contrast, the nonshielded NCM cathodes can only provide 58.9 and 45.5% capacity retentions at corresponding test temperatures and performance cycles. The acquired excellent electrochemical performance and battery stability at both the ambient and high-temperature conductions infer great importance of the novel La4NiLiO8 shields in developing high-performance safe secondary batteries.
DOI10.1021/acsami.9b18586
WOS KeywordVOLTAGE CYCLING STABILITY ; ELECTROCHEMICAL PERFORMANCE ; SURFACE MODIFICATION ; LINI0.5CO0.2MN0.3O2 ; CAPACITY ; OXIDE ; LINI0.815CO0.15AL0.035O2
Language英语
WOS Research AreaScience & Technology - Other Topics ; Materials Science
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sic.ac.cn/handle/331005/28381
Collection中国科学院上海硅酸盐研究所
Recommended Citation
GB/T 7714
Yasmin, A,Shehzad, MA,Wang, JR,et al. La4NiLiO8-Shielded Layered Cathode Materials for Emerging High-Performance Safe Batteries[J]. ACS APPLIED MATERIALS & INTERFACES,2020(1):826.
APA Yasmin, A.,Shehzad, MA.,Wang, JR.,He, XD.,Ding, X.,...&Chen, CH.(2020).La4NiLiO8-Shielded Layered Cathode Materials for Emerging High-Performance Safe Batteries.ACS APPLIED MATERIALS & INTERFACES(1),826.
MLA Yasmin, A,et al."La4NiLiO8-Shielded Layered Cathode Materials for Emerging High-Performance Safe Batteries".ACS APPLIED MATERIALS & INTERFACES .1(2020):826.
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