New developments in very high rate silver oxide electrodes
New developments in very high rate silver oxide electrodes
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DOI：
10.1016/s0378-7753(97)02467-1
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发表时间：
1997-03
影响因子：
9.2
通讯作者：
David F. Smith;G. R. Graybill;R. K. Grubbs;James A Gucinski
中科院分区：
文献类型：
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作者：
David F. Smith;G. R. Graybill;R. K. Grubbs;James A Gucinski
使用化学合成的银氧化物（单价和二价）制备用于原银/锌电池的阴极。氧化物与PTFE粘合剂混合，但不含用于该工作的导电填料。电极在6.3 M KOH电解液中在宽范围的电流密度（40-500 mA cm-2）和温度（7-40 °C）下恒电流放电。在这种条件下，两种氧化物的放电容量均大于理论值的90%。在高倍率（500 mA cm-2）下，一价氧化物的过电压比二价氧化物的过电压低约50 mV。与阳极化银阴极相比，化学AgO电极的能量密度提高了42%。
Cathodes for primary silver/zinc cells were prepared using chemically synthesized silver oxides (both monovalent and divalent). The oxides were mixed with PTFE binder but with no conductive fillers for this work. The electrodes were discharged galvanostatically over a broad range of current densities (40–500 mA cm−2) and temperature (7–40 °C) in 6.3 M KOH electrolyte. The discharge capacity was greater than 90% of the theoretical value for both oxides under such conditions. At high rate (500 mA cm−2) the overvoltage of the monovalent oxide is about 50 mV less than that for the divalent oxide. A 42% improvement in energy density over anodized silver cathodes was demonstrated with the chemical AgO electrodes.