Effect of MWCNT on the performances of the rounded shape natural graphite as anode material for lithium-ion batteries

被引：6

作者：

Lee, Sang-Young ^{[6
]}

Park, Jong Hyeok ^{[5
]}

Park, Pilkyu ^{[4
]}

Kim, Jong Hun ^{[4
]}

Ahn, Soonho ^{[4
]}

Lee, Kyeong-Jik ^{[3
]}

Lee, Hyung-Dong ^{[3
]}

Park, Jae-Sung ^{[2
]}

Kim, Deok-Hyeong ^{[1
]}

Jeong, Yeon Uk ^{[1
]}

机构：

[1] Kyungpook Natl Univ, Sch Mat Sci & Engn, Taegu 702701, South Korea

[2] Vitzrocell Co Ltd, R&D Ctr, Yesan 340861, Chungcheongnam, South Korea

[3] SODIFF Adv Mat Co Ltd, Yeongju 750080, Gyeongsangbuk D, South Korea

[4] LG Chem, Batteries Res & Dev, Taejon 305380, South Korea

[5] Sungkyunkwan Univ, Dept Chem Engn, Suwon 440746, Gyeonggi Do, South Korea

[6] Kangwon Natl Univ, Dept Chem Engn, Chunchon 200701, Gangwon Do, South Korea

来源：

JOURNAL OF SOLID STATE ELECTROCHEMISTRY | 2010年 / 14卷 / 06期

关键词：

CARBON NANOTUBES; ELECTRODES; WATER;

D O I：

10.1007/s10008-009-0888-0

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Multi-walled carbon nanotube (MWCNT) with bundle-type morphology was introduced as a new functional additive working as a particle connector or an expansion absorber in the anodes of lithium-ion batteries. By controlling the dispersion process, the MWCNT bundles were successfully divided and dispersed between the host particles. The composite anode consisting of rounded shape natural graphite and 2 wt.% of MWCNT exhibited the capacity of 300 mAh g(-1) at 3 C rate and excellent cyclability. The well-dispersed MWCNT bundles made it possible to relieve the large strains developed at high discharge C rates and to keep the electrical contact between the host particles during repeated intercalation/deintercalation. This study has also emphasized that when high C-rate applications of lithium-ion batteries are targeted, it is important to get optimum content of MWCNT as well as uniform dispersion of their bundles in the composite anodes.

引用

页码：951 / 956

页数：6

共 12 条

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