SEI layer-forming additives for LiNi0.5Mn1.5O4/graphite 5 VLi-ion batteries

被引：153

作者：

Lee, Hochun ^{[1
]}

Choi, Seungdon ^{[1
]}

Choi, Sanghoon ^{[1
]}

Kim, Hyeong-Jin ^{[1
]}

Choi, Yongsu ^{[1
]}

Yoon, Soojin ^{[1
]}

Cho, Jeong-Ju ^{[1
]}

机构：

[1] LG Chem Ltd, Batteries R&D, Taejon 305380, South Korea

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2007年 / 9卷 / 04期

关键词：

5 V lithium-ion battery; LiNi0.5Mn1.5O4; graphite; additive; succinic anhydride; 1,3-propane sultone;

D O I：

10.1016/j.elecom.2006.11.008

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

This study demonstrates that proper SEI layer on graphite anode is essential in LiNi0.5Mn1.5O4(LNMO)/graphite 5 V lithium-ion batteries. Succinic anhydride (SA) and 1,3-propane sultone (PS) were found to greatly extend cycle life and suppress swelling behavior of LNMO/graphite cells. The benefits of SA and PS were ascribed not only to the stable SEI layer they form on graphite but also to their stability toward the oxidation at high voltage. Using 1 M LiPF6 EC/EMC (1/2, v/v) solutions with SA and PS, LNMO/graphite Al-laminated pouch cell with nominal capacity of 600 mA h exhibited about 80% capacity retention after 100 cycles. This is the first report on the successful LNMO/graphite 5 V LIB to our best knowledge. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：801 / 806

页数：6

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