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Recently, the “Chemistry World†of the Royal Chemical Society of the United Kingdom reported on the Soft drinks power origami cell as the title of the report of the Dong Shaojun Research Group, the State Key Laboratory of Electroanalytical Chemistry of the Chinese Academy of Sciences, published in the “Chemical Newsletterâ€. New progress in biofuel cell research.
Biofuel cells are an energy device that replaces precious metal catalysts with enzymes. Compared with traditional fuel cells, biofuel cells have the unique advantages of wide source, mild operating conditions, and good biocompatibility, in addition to their high efficiency, cleanliness and environmental friendliness. However, the miniaturization of biofuel cells and the relatively complicated assembly process are still a major challenge to improve their practicality.
Dong Shaojun's research team has been working on the miniaturization and portability of biofuel cells for many years. Recently, a new method has been developed to directly obtain energy by catalytically converting glucose in soft drinks by combining origami technology with miniaturized biofuel cells. They have innovatively proposed a consumable cathode with manganese dioxide as a cathode material in view of the disadvantages of expensive noble metal cathodes such as platinum and gold, which are highly toxic and highly dependent on the concentration of oxygen in the solution. The cathode material is low in price, abundant in reserves, and allows the battery to operate under anaerobic conditions without requiring the addition of a precious metal, as evaluated by Shelley Minteer (deputy editor of JACS), an expert in the field of bioelectrocatalysis at the University of Utah, USA. Most of the inexpensive biofuel cells obtained from the substrate are cathode-limited cells.†In this work, they successfully placed a manganese dioxide cathode and a bioanode in an origami channel made of filter paper. A new type of low-cost portable paper-based biofuel cell has realized the miniaturization of biofuel cells and has provided new ideas for the development of new biofuel cells.
The origami biofuel cell can directly use commercial sugar-containing soft drinks such as Coca-Cola and Nutrition Express as fuel, which has the advantages of being cheap and easily available and has a good application prospect. Professor Donald Martin of the University of Grenoble, France, believes that "Although large-size origami batteries still have a long way to go, low-energy biofuel cells are still worth pursuing."
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