| Y2O3对铝代α-Ni(OH)2电极材料高温性能的影响 |
| Effect of Y2O3 on Electrochemical Performance of Al Doped α-Ni(OH)2 Electrode Material at High Temperature |
|
| 摘要: 固相法合成的样品，经X-射线粉末衍射(XRD)、扫描电镜(SEM)、红外光谱(FTIR)、电感螯合等离子体发射光谱(ICP-AES)、比表面积(BET)、热重分析(TGA)和滴定法(CT)等表征为α-Ni0.81Al0.19(OH)2.19-2y(CO3)y·xH2O(x=1.1~1.2，y=0.10~0.12)。为了改善其高温性能，样品经混掺不同量Y2O3后作为氢镍电池的正极材料，做了不同温度恒流充放电、微电极循环伏安(CV)和交流阻抗谱(EIS)测定。结果表明，60 ℃时掺Y2O30.4wt%~1.2wt%，能提高样品不同倍率放电比容量达18.1％~42.0％，同时也改善了高温放电电位。 |
| 关键词: 氢镍电池 α-Ni(OH)2 Y2O3 高温性能 |
| 基金项目: |
| Abstract: The α-Ni0.81Al0.19(OH)2.19-2y(CO3)y·xH2O(x=1.1~1.2，y=0.10~0.12) were synthesized by solid-state reaction, then their constitution, conformation were determined by XRD, SEM, FTIR, ICP-AES, BET, TGA and CT. The Al-doped α-Ni(OH)2 with different amount of Y2O3 were prepared as the positive electrode material of the simulated MH/Ni batteries and their constant current charge-discharge, CV and EIS were determined at different temperatures in order to improve the high temperature performance of the sample. It was shown that the additon of 0.4wt%~1.2wt％ of Y2O3 could increased 18.1％~42.0％ of discharge specific capacities of the sample at 60 ℃ at different rate of charge and discharge, and improved the high temperature discharge potential. |
| Keywords: MH/Ni batteries α-Ni(OH)2 Y2O3 high temperature performance |
| |
| 摘要点击次数: 1940 |
| 全文下载次数: 2245 |
| 庄玉贵,林东风,陈秀宇,周巧玲,王陈敏,郭李杰.Y2O3对铝代α-Ni(OH)2电极材料高温性能的影响[J].无机化学学报,2010,26(6):1071-1077. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| Support information: |
|
|
|
|
|
|
