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
收藏
页码：427 / 432
页数：6
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