کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6606015 459522 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Tris(trimethylsilyl)phosphate as electrolyte additive for self-discharge suppression of layered nickel cobalt manganese oxide
ترجمه فارسی عنوان
تریس (تریتیلیسیلیل) فسفات به عنوان افزودنی الکترولیتی برای سرکوب خود تخلیه اکسید منگنز کبالت لایه نازک
کلمات کلیدی
اکسید منگنز کبالت لایه نیکل، خود تخریب سرکوب، تریس (تریتیلیسیلیل) فسفات، افزودنی الکترولیتی،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی
Application of layered nickel cobalt manganese oxide as cathode under higher potential than conventional 4.2 V yields a significant improvement in energy density of lithium ion battery. However, the cathode fully charged under high potential suffers serious self-discharge, in which the interaction between the cathode and electrolyte proceeds without potential limitation. In this work, we use tris(trimethylsilyl)phosphate (TMSP) as an electrolyte additive to solve this problem. A representative layered nickel cobalt manganese oxide, LiNi1/3Co1/3Mn1/3O2, is considered. The effect of TMSP on self-discharge behavior of LiNi1/3Co1/3Mn1/3O2 is evaluated by physical and electrochemical methods. It is found that the self-discharge of charged LiNi1/3Co1/3Mn1/3O2 can be suppressed significantly by using TMSP. TMSP is oxidized preferentially in comparison with the standard electrolyte during initial charging process forming a protective cathode interface film, which avoids the interaction between cathode and electrolyte at any potential and thus prevents electrolyte decomposition and protects LiNi1/3Co1/3Mn1/3O2 from structure destruction.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 212, 10 September 2016, Pages 352-359
نویسندگان
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