成果報告書詳細
管理番号20140000000139
タイトル*平成25年度中間年報 固体高分子形燃料電池実用化推進技術開発 基盤技術開発 劣化機構解析とナノテクノロジーを融合した高性能セルのための基礎的材料研究
公開日2015/11/25
報告書年度2013 - 2013
委託先名国立大学法人山梨大学 株式会社カネカ 株式会社東レリサーチセンター 富士電機株式会社 田中貴金属工業株式会社 株式会社島津製作所 パナソニック株式会社
プロジェクト番号P10001
部署名新エネルギー部
和文要約
英文要約Title: Strategic Development of PEFC Technologies for Practical Application/Research on Nanomaterials for High Performance Fuel Cells (FY2008-FY2014) FY2013 Annual Report

1) Analysis of degradation mechanisms for the PEFC cathode, membrane and MEA・ We have found that the order phase of Pt3Co dispersed on CB maintained higher ORR activity jk than the order phase in hot acid solution at 65°C, although the jk of the latter at room temperature was higher than the former. ・ The durability of disorder phase of Pt3Co/CB was found to be improved by a heat treatment in H2, probably due to a formation of stable and uniform Pt skin layer on the alloy surface. 2) Development of high activity, high durability catalysts・ TKK has succeeded in controlling Pt particle size for 48 g-scale 30 wt% Pt/GCB prepared by the nanocapsule method. Fuji Electric Co. has demonstrated that such catalysts exhibited very high performance and durability in the MEA. ・ New cathode catalyst with a stable Pt skin layer formed on PtCo/GCB exhibited very high durability for accelerated tests simulating load changes and start-stop cycles at 65 °C. ・ We have found that the specific activity jk of Pt3Co(111) single crystal electrode was 20 times higher than that of Pt(111), while the jk of Pt3Co(100) and Pt3Co(110) was ca. 2 times higher than that of each facet of pure Pt. ・ We have found several important factors for high durability and high ORR activity at Pt dispersed on Nb-SnO2 with an aggregate structure, i. e., uniform dispersion of Pt, high conductivity of Nb-SnO2, and an interaction between Pt and Nb-SnO2. 3) Development of polymer electrolyte membranes suitable for wide temperature range and low humidity. ・ We found that ladderized component in the hydrophobic blocks improved proton conductivity and mechanical stability of sulfonated poly(arylene ether) block copolymer membranes. ・ We found that phosphine oxide groups in the hydrophilic blocks improved significantly the oxidative stability of sulfonated poly(arylene ether) block copolymer membranes. ・ We confirmed changes in the phase-separated morphology and proton paths of the sulfonated aromatic block copolymer membranes by temperature and humidity controlled small angle X-ray scattering (SAXS) and current-sensing atomic force microscopy (CS-AFM). 4) Research on high performance, high-reliability MEAs for fuel cell vehicles・ Thin catalyst layers with improved effectiveness of Pt were prepared by use of the nanocapsule method (NC) and optimization of both the ionomer and carbon support. ・ A thin catalyst layer that had improved Pt effectiveness due to the NC preparation was demonstrated to have superior performance in the cycling replacement process (air startup), in which the anode gas was switched between air, H2, and N2. ・ Pt/SnO2 as the cathode catalyst in a JARI cell showed comparable initial performance to that using Pt/CB. ・ MEAs using an SPK-bl-1 membrane were demonstrated to have superior durability in the air startup process and the accelerated OCV test.
ダウンロード成果報告書データベース(ユーザ登録必須)から、ダウンロードしてください。

▲トップに戻る