稳定化α-Ni(OH)_2电化学性能的研究

ELECTROCHEMICAL PERFORMANCE OF STABLE α-Ni(OH)_2

为了得到比能量高、晶型稳定的α—Ni(OH ) 2 ,使用恒流放电方法 ,研究了添加剂Al,Co对α—Ni(OH) 2 电化学性能的影响 .实验表明 ,添加Al的α—Ni(OH) 2 比容量高于 β Ni(OH) 2 的理论比容量 .Al,Co的添加对α—Ni(OH) 2 的比容量和放电电压有影响 .Al含量的增加提高了α—Ni(OH)的放电电压 .Al含量为2 0 %的α -Ni(OH) 2

In order to obtain stable α-Ni(OH) 2 with high specific energy,the effects of doped elements Al and Co on the electrochemical performance of α-Ni(OH) 2 were studied.Based on the study,we found that the practical discharge specific capacity of α-Ni(OH) 2 doped with Al was higher than the theoretical discharge specific capacity of βNi(OH) 2 and the discharge specific capacity and discharge potential of α-Ni(OH) 2 were greatly affected by doped elements Al and Co.The discharge potential was improved with increasing content of Al.The highest discharge specific capacity of α-Ni(OH) 2 was obtained when the content of AI was20%.