成果報告書詳細
管理番号20120000001245
タイトル*平成19年度~平成21年度成果報告書 新エネルギー技術研究開発/新エネルギーベンチャー技術革新事業(燃料電池・蓄電池)電子制御不要の燃料供給装置を用いた高効率携帯用小型燃料電池システムの開発
公開日2012/12/26
報告書年度2007-2009
委託先名国立大学法人群馬大学, 株式会社 ケミックス
プロジェクト番号P10020
部署名技術開発推進部
和文要約和文要約等以下本編抜粋:特殊な電極構造体により高濃度メタノールを利用可能な直接メタノール型燃料電池(DMFC)の実用化・事業化を目指し、そのプロトタイプ開発を行い、事業化計画を検討した。
英文要約Title : Project to Support Innovative New Energy Technology Ventures
Development of an efficient potable fuel cell system that does not require equipments for fuel supply with electronic control (FY2007-FY2009) Final Report
Research and development of a direct methanol fuel cell (DMFC) that is operated with methanol solutions at high concentrations of methanol, over 90 %, was conducted based on the technology, proposed by Gunma University, that utilize a novel electrode structure with a porous carbon plate. And, a business plan for a commercialization of the DMFC was considered.
In the research and development of the DMFC, firstly, properties of the porous carbon plate required for a vertical orientation of the electrode and for an enlargement of the electrode over 50 mm in height were investigated by evaluating the pore structure for the strong resistivity of the methanol transport through it, and then the DMFC with 50 mm vertical height and with 5 mm thickness of the total electrode structure was successfully constructed. A prototype of a passive DMFC, 1.6 W rated power, with the novel electrode structure was manufactured and was successfully operated by generating 1.8 W power output with 100wt% methanol.
Then, stacking, a short stack with 5 cells and a full stack with 30 cells, of the unit cell with the novel structure were demonstrated. The electrode area of the unit cell was enlarged to 30 cm2 for the actual application. The porous carbon plate selected in the previous study was not proper for the large electrode area and was replaced with another one. By the replacement of the porous carbon plate, both of the short stack and the full stack could generate power with the similar power density with that of the small size single cell.
Based on the above results, a DMFC system was constructed for an actual application we developed. It was a 15 W potable DMFC with a stack with 15 unit cells. The system consisted of the DMFC stack, air pump, cooling pump and secondary battery for charging electricity, no any other electrical controller for the methanol feed. An operation test confirmed that the FC power output agreed with that of expected. Based on the operating test, the final spec of the DMFC system was determined.
And hence, a business plan of the commercialization of the DMFC was drawn up for a certain application.
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