High-power lactate/O2 enzymatic biofuel cell based on carbon cloth electrodes modified with MgO-templated carbon

JOURNAL OF POWER SOURCES

卷:436

Article

Shitanda, Isao^1,2  Takamatsu, Kotaro¹  Niiyama, Ayumu³  Mikawa, Tsutomu⁴  Hoshi, Yoshinao¹  Itagaki, Masayuki^1,2  Tsujimura, Seiya^2,3 

[1] Tokyo Univ Sci, Fac Sci & Technol, Dept Pure & Appl Chem, 2641 Yamazaki, Noda, Chiba 2788510, Japan

[2] Tokyo Univ Sci, Res Inst Sci & Technol, 2641 Yamazaki, Noda, Chiba 2788510, Japan

[3] Univ Tsukuba, Fac Pure & Appl Sci, Div Mat Sci, 1-1-1 Tennodai, Tsukuba, Ibaraki 3055358, Japan

[4] RIKEN, Ctr Biosyst Dynam Res, Tsurumi Ku, 1-7-22 Suehiro Cho, Yokohama, Kanagawa 2300045, Japan

关键词: Biofuel cell;    Lactate;    Water repellent;    Lactate oxidase;    Bilirubin oxidase;   

DOI  :  10.1016/j.jpowsour.2019.226844

来源: Elsevier

【 摘 要 】

As lactate is a useful biomarker for evaluating conditions of the body and also has a high theoretical energy density as a fuel, enzymatic biofuel cells (BFCs) that utilize lactate as a fuel have received considerable attention. In this study, we have developed a high-power lactate/O-2 BFC that comprises composite electrodes made from carbon cloth as a current collector and MgO-templated porous carbon as an electroenzymatic reaction field and enzyme support. The bioanode contains lactate oxidase as an enzyme and 1-methoxy-5-methylphenazinium methylsulfate as a redox mediator. The biocathode contains bilirubin oxidase as an oxygen reduction electrocatalyst and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) as a mediator. To obtain an efficient gas diffusion biocathode, the hydrophobicity of the carbon cloth is modulated by modification with PTFE. The lactate/O-2 BFC shows a maximum power density of 4.3 mW cm(-2) at a lactate concentration of 300 mM. This high performance is promising for the development of BFCs for wearable applications.

【 授权许可】

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