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MORITA Hiroshi


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Bulletin of Sanyo-Onoda City University Issue 5 pp. 25 - 31
published_at 2022-03-31
There is a need to develop new energy sources that can replace or complement renewable energies such as solar power generation and wind power generation, which have been put into practical use but have many problems in terms of economy and stability. The author has focused on the SMFC (Sediment Microbial Fuel Cell) power generation research as one solution to this problem. In particular, the control of microorganisms that are the source of power generation was examined to increase the electrical output, which is the key to practical application. By incorporating an inorganic porous structure into the fuel cell, the author has succeeded in accumulating microorganisms near the electrode for the first time. As a result, it was found that the output characteristics of the SMFC were remarkably improved by inserting the porous material, which was embedded in the soil in advance and promoted the accumulation of microorganisms and organic substances, in the vicinity of the anode. By improving the open-circuit voltage and the short-circuit current, the output power has increased about 6 times on average compared to the conventional one. It is considered that the reason for this is that the accumulation of microorganisms near the anode promotes electron charge transfer into the electrode, increases the amount of generated hydrogen ions, and accelerates the reduction reaction. Furthermore, the author tried to optimize the amount and arrangement of the inorganic porous material to be inserted, and to introduce iron ions that have the function of promoting electron transfer in the battery. As a result, excellent output characteristics for practical use could be obtained.
Creators : MORITA Hiroshi Publishers : Sanyo-Onoda City University
Immediately after the Great East Japan Earthquake, I arrived at the university and started research on renewable energy that is resistant to natural disasters. For 10 years, I continued my research with my dear students in areas where other researchers have not done much. Among them, I would like to introduce three technologies that I have a strong feeling for. We have developed a transparent solar cell that converts ultraviolet rays into electric power, including its formation technology, and achieved the world's highest level of efficiency. It was possible to show that wind power generation with a diffuser using the wind lens effect can generate power even in weak winds. Furthermore, the soil microbial fuel cell originating from microorganisms has achieved 10 times the conventional power generation by introducing the novel porous body, which is our invention, and is close to practical use. This area has long daylight hours due to the coast of the Seto Inland Sea, and although it is weak, the wind always blows, and there are many lakes and rice fields. We would like to receive natural energy from them and convert it into electric power, which will lead to the realization of local production for local consumption of energy.
Creators : MORITA Hiroshi Publishers : 山陽小野田市立山口東京理科大学
Creators : MORITA Hiroshi Publishers : 山陽小野田市立山口東京理科大学
Creators : MORITA Hiroshi Publishers : 山陽小野田市立山口東京理科大学
Creators : MORITA Hiroshi Publishers : 山陽小野田市立山口東京理科大学