The discharge properties of Na/Ni3S2 cell at ambient temperature

被引：102

作者：

Kim, Jong-Seon ^{[1
]}

Ahn, Hyo-Jun ^{[1
]}

Ryu, Ho-Suk ^{[1
]}

Kim, Dong-Ju ^{[1
]}

Cho, Gyu-Bong ^{[1
]}

Kim, Ki-Won ^{[1
]}

Nam, Tae-Hyun ^{[1
]}

Ahn, Jou Hyeon ^{[2
]}

机构：

[1] Gyeongsang Natl Univ, ReCAPT, i Cube Ctr, Jinju 660701, Gyeongnam, South Korea

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

来源：

JOURNAL OF POWER SOURCES | 2008年 / 178卷 / 02期

关键词：

sodium battery; nickel sulfide cathode; Na/Ni3S2; cell; discharge property;

D O I：

10.1016/j.jpowsour.2007.09.067

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The discharge properties of a Na/Ni3S2 Cell Using I M NaCF3SO3 in tetra(ethylene glycol)dimethyl ether liquid electrolyte were investigated at room temperature. The products were characterized by X-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy. Electrochemical properties of Na/Ni3S2 cells were also presented by cyclic voltammetry and the galvanostatic current method. Na/Ni3S2 cells have an initial discharge capacity of 420 mAh g(-1) with a plateau potential at 0.94 V versus Na/Na+. After the first discharge, Ni3S2 and Na react at room temperature and then form sodium sulfide (Na2S) and nickel. Sodium ion can be partially deintercalated from NaS charge reaction. The discharge process can be explained as follows: Ni3S2 +4Na <-> 3Ni + 2Na(2)S. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：852 / 856

页数：5

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