Development of Primary-Secondary Air-Battery using Activated-Carbon made from Saw-dust under high temperature

我们研究了由锌（负极）和活性炭（正极）组成的二次空气电池。本电池的特点是采用高压高温下制备的独特的木屑活性炭，作为氧离子（OH-）的吸附电极，实现可充电碳空气电池。新型电池的基本性能如下：典型电池充电后电压（Voc）为1.5V ~ 1.8V，高容量/kg为15 ~ 20 Ah/kg。该值与实际的铅酸蓄电池具有同等的可比性。碳空气电池的充放电效率超过80%，显示出优异的价值，在未来作为实用的新型碳空气电池具有很大的潜力。

We have studied secondary air-battery consists of Zn (negative electrode) and activated charcoal (positive electrode). Characteristic point of the present battery is to adopt unique activated charcoal made from saw-dust fabricated under high-pressure and high temperature, which can play a role as adsorption electrode of oxygen ion (OH-), by which we can realize rechargeable carbon air-battery. Basic property of the new battery is following: typical cell-voltage after charging (Voc) ranges from 1.5V to 1.8V with high capacity / kg of 15-20 Ah/kg. This value is equally comparable with practical Pb- battery. A charge-discharge efficiency of the carbon air-battery reveals excellent value exceeding 80%, and this battery has high potential as practical new carbon air-batter in future.