【摘要】 高比特性实用化锌 空气电池的阴极是由一种新型空气电极组成。它包括催化活性层、憎水透气层、集流体导电网和防漏密封层。由于该种电极的研制成功 ,使困扰圆柱型锌 空气电池实用化的防漏问题得到解决。以AA型电池为例 ,在 2 0Ω的定电阻标准条件下放电 ,其容量为 4 6Ah ,在 1 2 3V左右有一个平坦放电平台 ,比能量达到70 0Wh/L ,过放 2 4h电池无漏液。该种电池的持续放电时间比普通碱性锌 锰电池高出 2倍以上 ,将其运用在传呼机、随身听、CDMA手机等方面具有广阔的前景更多还原

【Abstract】 A novel thin multiple layer metal air cathode with high specific property utility for cylinderical zinc air cell has been invented.It consists of a catalytic active layer, a barrier layer and a current collecting substrate as well as the most important one, a leakage proof sealing layer that attaches other three layers very tightly. With help of the new cathode, the cell can be closed and sealed easily with extremely high reliability of leakage proof characteristic that the traditional three layer air cathode can not do. The prototype of cylinderical AA cell was manufactured and its discharge capacity reached 4.6 Ah with 20 Ω load that was far from that of alkaline manganese cell(only 2.1 Ah).Compared with the sharp slope voltage curve of alkaline manganese cell, zinc air cell had a flat plateau at 1.23 V.The zinc air cell also provided 300 Wh/kg on specific energy,700 Wh/L on energy density and 200 mA on maximum current at 1.10 V as well as no leakage after being over discharged for 24 h. The new cathode can also be used in manufacturing prismatic cell. Along with the commercialized production, cylinderical zinc air cell with the new cathode will potentially replace a significant market share of traditional alkaline manganese cell, especially in the application of pager, walkman/walkman CD and CDMA cellular phone.更多还原