Influence of pH of Gelatin Solution on Cycle Performance of the Sulfur Cathode

被引：25

作者：

Zhang, Wuyu ^{[1
]}

Huang, Yaqin ^{[1
]}

Wang, Weikun ^{[2
]}

Huang, Chongjun ^{[1
]}

Wang, You ^{[1
]}

Yu, Zhongbao ^{[2
]}

Zhang, Hao ^{[2
]}

机构：

[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Key Lab Beijing City Preparat & Proc Novel Polyme, Beijing 100029, Peoples R China

[2] Res Inst Chem Def, Beijing 100191, Peoples R China

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2010年 / 157卷 / 04期

关键词：

cathodes; gelatin; secondary cells; RECHARGEABLE LITHIUM/SULFUR BATTERY; ELECTROCHEMICAL PROPERTIES; LIQUID ELECTROLYTES; TEMPERATURE; COMPOSITES; BINDER; BLACK; CELL;

D O I：

10.1149/1.3299323

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The influence of pH of the gelatin solution on the cycle performance of the sulfur cathode for lithium-sulfur batteries was studied. Scanning electron microscopy measurements revealed that the cathode prepared with pH 10.0 gelatin solution as a binder showed a uniform distribution. The charge/discharge experiments of the lithium-sulfur batteries showed that an initial capacity of 1137 mAh g(-1) and a reversible capacity of 642 mAh g(-1) after 30 cycles were achieved, which were higher than those of the cathodes prepared at pH 5.0 and 8.0. To understand the effect of the pH value of the gelatin solution on the cycle performance of sulfur cathodes, electrochemical impedance spectroscopy and X-ray diffractometry were carried out.

引用

页码：A443 / A446

页数：4

共 26 条

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