Discharge mechanism of MoS2 for sodium ion battery: Electrochemical measurements and characterization

被引：211

作者：

Park, Jinsoo ^{[1
]}

Kim, Jong-Seon ^{[2
]}

Park, Jin-Woo ^{[1
]}

Nam, Tae-Hyun ^{[1
]}

Kim, Ki-Won ^{[1
]}

Ahn, Jou-Hyeon ^{[3
]}

Wang, Guoxiu ^{[1
,4
]}

Ahn, Hyo-Jun ^{[1
]}

机构：

[1] Gyeongsang Natl Univ, RIGET, Sch Mat Sci & Engn, Jinju 660701, South Korea

[2] SK Innovat, Battery R&D, Adv Mat & Syst Team, Taejon 305712, South Korea

[3] Gyeongsang Natl Univ, Dept Chem & Biol Engn, Jinju 660701, South Korea

[4] Univ Technol Sydney, Dept Chem & Forens Sci, Broadway, NSW 2007, Australia

来源：

ELECTROCHIMICA ACTA | 2013年 / 92卷

基金：

新加坡国家研究基金会;

关键词：

Molybdenum disulfide; Sodium ion battery; Electrochemistry; Mechanism; Room temperature; LITHIUM STORAGE; FACILE SYNTHESIS; CATHODE MATERIAL; LI; INTERCALATION; NANOSHEETS;

D O I：

10.1016/j.electacta.2013.01.057

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

New emerging large scale battery market has demanded low cost and high power or energy density materials. Sodium (Na) is a promising candidate for an anode material because of its low cost and natural abundance. Also molybdenum disulfide (MoS2) is an attractive cathode material with layered structure. In this study a Na/MoS2 cell was assembled so as to evaluate its electrochemical properties as a rechargeable battery. In the first discharge Na/MoS2 cell showed two characteristic plateaus at 0.93 V and 0.8V. Galvanostatic charge/discharge cycle was carried out in different voltage ranges according to the discharge depths (0.85 V and 0.4V). The electrochemical behaviors of Na/MoS2 cells at each discharge depth were analyzed through characterization of the crystallographic changes by employing ex situ X-ray diffractometry (XRD) and transmission electron microscopy (TEM). Finally, Na/MoS2 reaction mechanism was suggested. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：427 / 432

页数：6

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