Charge-Discharge and Capacity Retention Characteristics of New Type Ni/MH Batteries Using Polymer Hydrogel Electrolyte
Charge-Discharge and Capacity Retention Characteristics of New Type Ni/MH Batteries Using Polymer Hydrogel Electrolyte
复制标题
聚合物水凝胶电解质新型镍氢电池的充放电及容量保持特性
DOI：
10.1149/1.1622405
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发表时间：
2003
影响因子：
3.9
通讯作者：
H. Inoue
中科院分区：
文献类型：
--
作者：
C. Iwakura;Keisuke Ikoma;S. Nohara;N. Furukawa;H. Inoue
使用聚合物水凝胶电解质组装了正极容量控制的镍/金属氢化物（Ni/MH）电池，并与使用7.3 M KOH水溶液的电池进行了比较，研究了它们的充电/放电和容量保持特性。聚合物水凝胶电解质和镍正极之间的界面工作得非常好，并且具有聚合物水凝胶电解质的实验电池表现出几乎与具有7.3M KOH水溶液的电池相当的充电/放电特性，例如放电容量、循环性能和高倍率性能。此外，通过使用聚合物水凝胶电解质，容量保持特性显著改善。聚合物水凝胶电解质在较高温度下对容量保持特性的影响更为显著。这些结果有力地表明，聚合物水凝胶电解质具有潜在的适用于商业Ni/MH电池。
Positive electrode capacity-controlled nickel/metal hydride (Ni/MH) batteries were assembled using the polymer hydrogel electrolyte and their charge/discharge and capacity retention characteristics were investigated compared to those using a 7.3 M KOH aqueous solution. The interface between the polymer hydrogel electrolyte and nickel positive electrode worked very well and the experimental cell with the polymer hydrogel electrolyte exhibited charge/discharge characteristics such as discharge capacity, cycle performance and high rate capability almost comparable to the cell with a 7.3 M KOH aqueous solution. Moreover, the capacity retention characteristics were markedly improved by using the polymer hydrogel electrolyte. The effects of the polymer hydrogel electrolyte on the capacity retention characteristics were more remarkable at relatively high temperature. These results strongly suggest that the polymer hydrogel electrolyte has a potential applicability to the commercial Ni/MH batteries.