摘要
Oxygen evolution causes a high inner pressure during charge and overcharge for MH/Ni battery, and an inappropriate eliminating way of the oxygen in the battery results in accumulation of heat. This is the main obstacle to develop and apply high capability and high power battery. How to reduce the ratio of the chemical catalysis rate to the electric catalysis rate in MH/Ni battery is considered as an urgent question. Iron phthalocyanine(FePc) was chosen as an electrochemical catalyst. The batteries were prepared by adding iron phthalocyanine with different dosages. The inner pressure, the capacity attenuation, the discharge voltage and capacity at high current of these three batteries were compared. The battery with 1 mg FePc in the negative electrode exhibits a good performance.
Oxygen evolution causes a high inner pressure during charge and overcharge for MH/Ni battery, and an inappropriate eliminating way of the oxygen in the battery results in accumulation of heat. This is the main obstacle to develop and apply high capability and high power battery. How to reduce the ratio of the chemical catalysis rate to the electric catalysis rate in MH/Ni battery is considered as an urgent question. Iron phthalocyanine(FePc) was chosen as an electrochemical catalyst. The batteries were prepared by adding iron phthalocyanine with different dosages. The inner pressure, the capacity attenuation, the discharge voltage and capacity at high current of these three batteries were compared. The battery with 1 mg FePc in the negative electrode exhibits a good performance.
出处
《中国有色金属学会会刊：英文版》
CSCD
2004年第2期227-231,共5页
Transactions of Nonferrous Metals Society of China
基金
Project(2 0 0 2CB2 11800)supportedbytheNationalKeyFundamentalResearchandDevelopmentProgramofChina,project(2 0 0 1CCA0 5 0 0 0 )supportedbytheNationalKeyProgramforBasicResearchofChina
关键词
MH/NI电池
酞菁染料
储氢合金
电化学性能
电极过程
催化剂
MH/Ni batteries
iron phthalocyanine
hydrogen storage alloys
electrochemical catalyst
inner pressure
