|Enzymes||:||Glucose dehydrogenase and diaphorase (anode)
Bilirubin oxidase (cathode)
|Mediators||:||Vitamin K3 and cofactor NADH (anode)
Potassium ferricyanide (cathode)
|Current collector||:||Titanium mesh|
|Glucose solution||:||0.4 M glucose in 1.0 M sodium phosphate buffer, pH 7.0|
|Maximum output||:||1.5 mW/cm2 (0.3V, 5 mA/cm2) at 1 min after connection|
|Dimensions||:||39 (width) x 39 (height) x 39 (depth) mm|
|Volume||:||40 cc (without casing)|
|Maximum output||:||50 mW|
1. Bio battery
An electricity generation device that utilizes energy sources such as carbohydrates, protein, amino acids, fat by digesting enzymes. Since 2001, Sony's research has been supported by Professor Kenji Kano's laboratory (formerly professor Tokuji Ikeda's laboratory) at the Division of Applied Life Sciences, Graduated School of Agriculture, Kyoto University, Kyoto, Japan, which specializes in bioelectrochemistry. The results presented here are based on Sony's original technological developments, inspired by the lab's advanced research activities.
2. 50 mW: World's highest power output as of August 23, 2007, based on Sony research.
3. Passive-type battery
A system in which reactive substances such as glucose and oxygen are absorbed into electrodes through a process of natural diffusion. In contrast, systems in which reactive substances are supplied by force (stirring, convection) are referred to as "active-type". In general, passive-type systems have a more simple structure suitable for miniaturization, whereas active type systems have a more complicated structure and are suited to higher power devices.