Enzyme biological fuel cell and preparing method thereof

Abstract

An enzyme biological fuel cell is prepared by the steps of separating a negative pole and a positive pole by phenol proton exchange membrane (DuPontTMPFSA NRE-211), preparing substrate materials of the negative pole and the positive pole to be grapheme-nanu-au composition, respectively loading laccase and glucose oxidase on substrate materials, using the loaded laccase and glucose oxidase to catalyze respectively oxygen and glucose substrate in a cathode chamber and an anode chamber to receive and lose electrons, and forming a loop by the fact that electrons start from the anode, pass through an external circuit and reach the cathode. When glucose concentration of the enzyme biological fuel cell in the anode chamber is 50 mM, open-circuit voltage of the cell is 1.2V, maximum power density of the cell is 1.96+-0.13mW cm-2, and internal resistance of the cell is only 200 omega. Two enzymebiological fuel cells connected in series can light a red or a yellow luminous diode successively. After the enzyme biologica fuel cell is assembled for 70 days, open circuit potential of the cell remains 80% of the best value. The preparing method is also disclosed.

Description

technical field [0001] The present invention relates to enzyme biofuel cells. Background technique [0002] With the depletion of traditional non-renewable energy sources, in today's society, researchers are trying their best to find an effective way to convert chemical energy into electrical energy, thereby alleviating the pressure of increasing energy consumption [see: M.J.Moehlenbrock, S.D.Minteer, Chem.Soc.Rev.2008, 37, 1188-1196.]. Harvesting energy from the environment to drive electronic devices has always been a human dream [See: C.Pan, Y.Fang, H.Wu, M.Ahmad, Z.Luo, Q.Li, J.Xie, X.Yan , L. Wu, Z. L. Wang, J. Zhu, Adv. Mater. 2010, 22, 5388-5392.]. In the 1980s and early 1990s, the fascinating "biofuel cells" began to enter the research stage, with the goal of building "green", sustainable [cf.: (a) T.K.Tam, G.Strack, M .Pita, E.Katz, J.Am.Chem.Soc.2009, 131, 11670-11671; (b) V.Coman, C.Vaz-Dominguez, R.Ludwig, W.Herreither, D.Haltrich, A.L.De Lacey, T.Ruzgas, L.G...

AI Technical Summary

Problems solved by technology

However, the introduction of the intermediary has also brought some problems, mainly because it is usually unstable, which is unfavorable for the long-term operation of the biofuel cell [see: (a) M.J.Moehlenbrock, S.D.Minteer, Chem.Soc.Rev. 2008, 37, 1188-1196; (b) S.K. Chaudhuri, D.R. Lovley, Nat. Biotechnol. 2003, 21, 1229-1232.]

Images