دورية أكاديمية
أعرض في EDS

In Situ Characterizations of the Dynamics of Cathode Electrolyte Interfaces at Different Current Densities.

التفاصيل البيبلوغرافية
العنوان: In Situ Characterizations of the Dynamics of Cathode Electrolyte Interfaces at Different Current Densities.
المؤلفون: Lv H; Institute of Fundamental and Frontier Science, University of Electronic Science and Technology of China, Chengdu, 611731, China.; Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, 313001, China., Zhou L; Institute of Fundamental and Frontier Science, University of Electronic Science and Technology of China, Chengdu, 611731, China.; Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, 313001, China., Fang Q; Institute of Fundamental and Frontier Science, University of Electronic Science and Technology of China, Chengdu, 611731, China.; Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, 313001, China., Cheng J; Institute of Chemical Materials, China Academy of Engineering Physics, Chengdu, 610200, China., Mei J; Chengdu Development Center of Science and Technology, China Academy of Engineering Physics, Chengdu, 610200, China., Xia Y; Key Laboratory of Neutron Physics and Institute of Nuclear Physics and Chemistry, China Academy of Engineering Physics (CAEP), Mianyang, 621999, China., Wang B; Institute of Fundamental and Frontier Science, University of Electronic Science and Technology of China, Chengdu, 611731, China.; Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China, Huzhou, 313001, China.
المصدر: Small (Weinheim an der Bergstrasse, Germany) [Small] 2024 May 28, pp. e2312204. Date of Electronic Publication: 2024 May 28.
Publication Model: Ahead of Print
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Wiley-VCH Country of Publication: Germany NLM ID: 101235338 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1613-6829 (Electronic) Linking ISSN: 16136810 NLM ISO Abbreviation: Small Subsets: MEDLINE
أسماء مطبوعة: Original Publication: Weinheim, Germany : Wiley-VCH, c2005-
مستخلص: LiNi 0.8 Mn 0.1 Co 0.1 O 2 with high nickel content plays a critical role in enabling lithium metal batteries (LMBs) to achieve high specific energy density, making them a prominent choice for electric vehicles (EVs). However, ensuring the long-term cycling stability of the cathode electrolyte interfaces (CEIs), particularly at fast-charge conditions, remains an unsolved challenge. The decay mechanism associated with CEIs and electrolytes in LMB at high current densities is still not fully understood. To address this issue, in situ Fourier transform infrared (FTIR) is employed to observe the dynamic process of formation/disappearance/regeneration of CEIs during charge and discharge cycles. These dynamic processes further exacerbate the instability of CEIs as current density increases, leading to rupture and dissolution of CEIs and subsequent deterioration in battery performance because of continuous electrolyte reactions. Additionally, the dynamic changes occurring within individual components of CEIs at different cycling stages and various current densities are also discussed. The results demonstrate that excellent capacity retention at small current density is attributed to enrichment of inorganic compounds (Li 2 CO 3 , LiF, etc.) and rendering better stability and smaller expansion of CEIs. The key to achieving excellent electrochemical performance at high current densities lies on protecting CEIs, mainly inorganic components.
(© 2024 Wiley‐VCH GmbH.)
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معلومات مُعتمدة: U20A2072 National Natural Science Foundation of China; U2330124 National Natural Science Foundation of China; 52072352 National Natural Science Foundation of China; 21875226 National Natural Science Foundation of China; 2020JDTD0035 Foundation for the Youth S&T Innovation Team of Sichuan Province; 2023ZYD0026 Sichuan Science and Technology program
فهرسة مساهمة: Keywords: cathode electrolyte interphase (CEI); high current density; in situ EIS; in situ FTIR; mechanistic analysis
تواريخ الأحداث: Date Created: 20240528 Latest Revision: 20240528
رمز التحديث: 20240528
DOI: 10.1002/smll.202312204
PMID: 38804909
قاعدة البيانات: MEDLINE
الوصف
تدمد:1613-6829
DOI:10.1002/smll.202312204