Next-generation high-performance biofuel cell

酶生物燃料电池有潜力实现102毫安/平方厘米的高电流密度，这是便携式能源设备所需的值，燃料如葡萄糖和乙醇。模型计算表明，由氧化还原聚合物接枝炭黑制成的高表面积三维碳电极可以实现所需的电流密度。目前获得的低电流密度的主要原因是在炭黑疏水表面吸附时酶的失活。对炭黑进行表面改性和使用超嗜热酶可以有效地减少酶的失活。

Enzymatic biofuel cells have a potential to achieve a high current density of 102 mA/cm2, a value required for portable energy devices, with fuels such as glucose and ethanol. Model calculations have suggested that a high-surface area three-dimensional carbon electrode made of redox-polymer-grafted carbon black can realize the required current density. The main reason of the low current density obtained thus far was the deactivation of enzymes upon adsorption on hydrophobic surface of carbon black. Surface modification of carbon black and the use of hyperthermophilic enzymes are effective in reducing the deactivation of enzymes.