摘要
采用均匀络合共沉淀法 ,首次合成出了掺杂钇基 α-Ni(OH) 2 .并采用 XRD,FTIR和 SEM分析技术 ,对其结构及形貌进行了研究 .电化学测试表明 ,所制得的掺杂钇基 α-Ni(OH) 2 与掺铝的 α-Ni(OH) 2 和球形 β-Ni(OH) 2 相比 ,敲实密度 1 .6g/cm2 ,电化学比容量 3 3 0 m A·h/g以上 ,活性物质利用率大于 95 % ,循环可逆性好等优点 .
Y doped α Ni(OH) 2 has been synthesized by partially substitution of nickel hydroxide with Y. The structure, morphology and composition of the compound have been investigated by X ray diffraction. Fourier transform infrared spectroscopy and scanning electron microscopy. The prepared Y doped α Ni(OH) 2 has larger packed density(1 6 g/mL), greater specific capacity(>330 mA·h/g) and higher utilization ratio(>95%) of active material than the aluminum doped α Ni(OH) 2 and β Ni(OH) 2 . Cyclic voltammetry suggests that the compound has better reversibility.
出处
《应用化学》
CAS
CSCD
北大核心
2001年第9期689-692,共4页
Chinese Journal of Applied Chemistry
基金
国家自然科学基金资助项目 ( 2 99810 0 2 )