Gas Consumption Reactions and Cycling Characteristics of Improved Sealed Ni-Cd Batteries

作者：Zhang Jixiao^*; Yu Jingxian; Cha Chuansin

来源：International Journal of Electrochemical Science, 2012, 7(10): 10233-10243.

• Ni-Cd battery
• Internal pressure
• Gas consumption reactions
• Metal hydride
• Cycling characteristics

Conventional sealed Ni-Cd cells were improved for high-rate applications by mixing metal hydride (MH) alloy powder with Cd/CdO active materials. Experimental results demonstrated that the presence of MH alloy powder, such as MmNi(3.55)Co(0.75)Mn(0.4)Al(0.3), improves the performance of conventional Ni-Cd cells as they are capable of consuming hydrogen and catalysing the recombination reactions of hydrogen and oxygen by both chemical and electrochemical routes. As a result, the safety of Ni-Cd batteries is significatly enhanced, particularly when they are operated under high-rate charge/discharge processes. The addition of MH alloy powder also slows down the capacity fade rate and extends the operation lifetime.

• 出版日期2012-10
• 单位武汉大学