کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5014648 | 1369402 | 2016 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High throughput combinatorial analysis of mechanical and electrochemical properties of Li[NixCoyMnz]O2 cathode
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
In this study, Li[NixCoyMnz]O2 cathode composition library was fabricated using combinatorial methodology and characterized using nanoindentation to create a mechanical properties database as a function of Li[NixCoyMnz]O2 composition. A single sputter deposition from LiCoO2, LiNiO2, and LiMn2O4 compound targets resulted in a composition range of 3-44 at.% Co, 20-80 at.% Ni, and 5-50 at.% Mn. Young's modulus and hardness values were evaluated before and after charge-discharge cycles, and a strong dependency of the mechanical properties on composition was found; Mn-rich composition showed highest retention of its mechanical properties whereas the properties degraded more significantly for the Ni-rich composition. Electrochemical performance was analyzed and compared to mechanical properties at various Li[NixCoyMnz]O2Â compositions and a strong correlation between enhanced mechanical properties retention leading to superior discharge capacity retention was found for the Mn-rich compositions. Li[Ni0.33Co0.30Mn0.34]O2 composition showed optimized electrochemical and mechanical properties, where it retained 38% and 50% of its Young's modulus and hardness after cycling while demonstrating 91% discharge capacity retention after 20 cycles at 1 C-rate.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Extreme Mechanics Letters - Volume 9, Part 3, December 2016, Pages 439-448
Journal: Extreme Mechanics Letters - Volume 9, Part 3, December 2016, Pages 439-448
نویسندگان
Donghyuk Kim, Hyung Cheoul Shim, Tae Gwang Yun, Seungmin Hyun, Seung Min Han,