Thermal sulficlation behavior of Ti-Ni alloys

被引：5

作者：

Nam, TH ^{[1
]}

Park, SM ^{[1
]}

Cho, KK ^{[1
]}

机构：

[1] Gyeongsang Natl Univ, Informat Technol Res Ctr Energy Storage & Convers, Gyeongnam 660701, South Korea

来源：

ECO-MATERIALS PROCESSING & DESIGN VI | 2005年 / 486-487卷

关键词：

Ti-Ni shape memory alloys; superelasticity; sulfidation; Ti and Ni sulfides; battery; discharge characteristics;

D O I：

10.4028/www.scientific.net/MSF.486-487.622

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Ti and Ni sulfides were formed on the surface of Ti-Ni alloys by isothermal annealing at various sulfur pressures, and then microstructures of the surface sulfide layers were investigated by means of scanning electron microscopy and X-ray diffractions. Morphology of sulfurized surface changed from granular shape to porous shape at the sulfur pressure of 80 kPa, which is related to the change in sulfide from NiS1.97 to NiS. Two-layered sulfide was observed in which the inner layer was mainly Ti8.2S11, and the outer layer was a mixture of NiS1.97 and NiS. The discharge curve of the Ti and Ni sulfides cathode formed on the Ti-Ni current collector at the first cycle showed a plateau voltage of 1.6 V, and the discharge capacity was found to be about 530 mAb/g-NiS1.97.

引用

页码：622 / 625

页数：4