Zobrazeno 1 - 10
of 358
pro vyhledávání: '"Shuichiro HIRAI"'
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 90, Iss 935, Pp 24-00098-24-00098 (2024)
Zinc-air batteries are widely considered as the next-generation rechargeable batteries due to their high energy density, low cost, and high safety. However, internal short circuits caused by zinc dendrite growth and bubble generation by side reaction
Externí odkaz:
https://doaj.org/article/3e81f6daa8fb44ddb825f726eadbe86c
Publikováno v:
Electrochemistry, Vol 92, Iss 8, Pp 087003-087003 (2024)
Zinc-air batteries are anticipated to be next-generation energy storage devices because of their high capacities compared with conventional secondary batteries. However, the growth of zinc dendrites and electrolyte decomposition can compromise batter
Externí odkaz:
https://doaj.org/article/9cae534f41a14977bdf4a1b2f3e18f10
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 86, Iss 892, Pp 20-00183-20-00183 (2020)
Electrolyzed water generator can produce acidic and alkaline water from tap water and electric power, and is expected to have applications in the food and medical fields for sterilization, cleaning and disinfection. However, there are still many unkn
Externí odkaz:
https://doaj.org/article/a0ff1e14bbec42dba596b6434ede4e03
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 86, Iss 883, Pp 19-00354-19-00354 (2020)
In this paper, two-phase flow and ion transportation in an alkaline water electrolysis are discussed with three-dimensional coupling numerical simulation to reveal the influence of a bubble in the alkaline water electrolysis on the cell efficiency to
Externí odkaz:
https://doaj.org/article/f9c44bb4a6534685b356ce9b6b1ff1f7
Autor:
Maito Koga, Hidetoshi Matsumoto, Mitsunori Kunishima, Masatoshi Tokita, Hiroyasu Masunaga, Noboru Ohta, Akihisa Takeuchi, Junji Mizukado, Hidekazu Sugimori, Kazuhiko Shinohara, Suguru Uemura, Toshihiko Yoshida, Shuichiro Hirai
Publikováno v:
Membranes, Vol 11, Iss 7, p 466 (2021)
Perfluorosulfonated ionomers are the most successful ion-exchange membranes at an industrial scale. One recent, cutting-edge application of perfluorosulfonated ionomers is in polymer electrolyte fuel cells (PEFCs). In PEFCs, the ionomers are used as
Externí odkaz:
https://doaj.org/article/660d3c3369ab4a36903f62b44b90e35b
Coupled simulation of bubbles behavior and ion transport and reaction on alkaline water electrolysis
Autor:
Daisuke UMEHARA, Shuichiro HIRAI
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 84, Iss 865, Pp 18-00040-18-00040 (2018)
In recent years, alkaline water electrolysis is receiving much attention on environmental issues because of hydrogen production using renewable energy. However, it is necessary to enhance the efficiency of electrolysis. One of the main causes that ha
Externí odkaz:
https://doaj.org/article/3b6624d0a95348dca4f03ac9da4b7ca4
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 83, Iss 846, Pp 16-00399-16-00399 (2017)
Compact power generation systems which consist of methanol reformer and Polymer Electrolyte Fuel Cell (PEFC) are greatly required as emergency power source. In this system, PEFC exhaust heat can be utilized for evaporating methanol solution before re
Externí odkaz:
https://doaj.org/article/89d3d6964dce433a8cdba3af1c13b52b
Publikováno v:
Journal of Thermal Science and Technology, Vol 8, Iss 1, Pp 152-164 (2013)
Geological sequestration of carbon dioxide (CO2) is an effective method to achieve a substantial reduction in CO2 emissions to the atmosphere at a relatively low cost; however, the migration process of CO2 in deep saline aquifers has not been clarifi
Externí odkaz:
https://doaj.org/article/8787803ffb024d6886d2acef73769ee7
Publikováno v:
Journal of Thermal Science and Technology, Vol 7, Iss 4, Pp 619-632 (2012)
We investigated influences of SO2 concentration and relative humidity in fuel and air streams on anode and cathode poisoning behaviors under open circuit voltage and load operating conditions in polymer electrolyte membrane fuel cells (PEMFCs). The r
Externí odkaz:
https://doaj.org/article/5b66a1a5f50545b19ea06d2110b627f8
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 82, Iss 837, Pp 15-00643-15-00643 (2016)
The aqueous lithium-air battery has been receiving considerable research attention owing to its high theoretical energy density. This property is important from the perspective of enabling electric vehicles to rival the performance of gasoline-powere
Externí odkaz:
https://doaj.org/article/9f100ae4b052414eaad519a74d5430c1