Synthesis of a New Cathode Redox Polymer for High Performance in Biofuel Cells

Bulletin of the Korean chemical society

Jung-Min Lee¹  Young-Bong Choi¹  Hyug-Han Kim¹ 

关键词: Biofuel cell;    Osmium redox polymer;    Bilirubin oxidase;    Mediator;    Screen-printed carbon;   

DOI  :  

学科分类：化学（综合）

来源: Korean Chemical Society

【 摘 要 】

High potential and fast electron transfer of a cathode mediator are significant factors for improving the performance of biofuel cells. This paper reports the first synthesis of a cathode redox polymer that is a coordination complex of poly (acrylic acid-vinylpyridine-acryl amide) (PAA-PVP-PAA) and [Os(4,4`- dicarboxylic acid-2,2`-bipyridine)2Cl2]/+ (Eo = 0.48 V versus Ag/AgCl). Bilirubin oxidase can be easily incorporated into this polymer matrix, which carried out the four-electron oxygen under typical physiological conditions (pH 7.2, 0.14 M NaCl, and 37 oC). This new polymer showed an approximately 0.1 V higher redox potential than existing cathode mediators such as PAA-PVI-[Os(dCl-bpy)2Cl]+/2+. In addition, we suggest increasing the polymer solubility with two hydrophilic groups present in the polymer skeleton to further improve fast electron transfer within the active sites of the enzyme. The maximum power density achieved was 60% higher than that of PAA-PVI-[Os(dCl-bpy)2Cl]+/2+. Furthermore, high current density and electrode stability were confirmed for this osmium polymer, which makes it a promising candidate for high-efficiency biofuel cells.

【 授权许可】

Unknown