New Oxygen Reduction Electrocatalysts Based on Lanthnane Manganite Oxides and Their Application to the Cathode of AEMFCs
New Oxygen Reduction Electrocatalysts Based on Lanthnane Manganite Oxides and Their Application to the Cathode of AEMFCs
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基于镧系亚锰氧化物的新型氧还原电催化剂及其在AEMFC阴极中的应用
DOI：
10.1149/05801.1335ecst
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发表时间：
2013
期刊：
影响因子：
--
通讯作者：
Jun Kuwano
中科院分区：
文献类型：
--
作者：
Morhiro Saito;Tatsuya Takakuwa;Takuya Kenko;Hideo Daimon;Akimasa Tasaka;Minoru Inaba;Hidenobu Shiroishi;Takeo Hatai;Jun Kuwano
合成了Ketjen黑（KB）负载的过氧化镧La 1-xSrxMnO 3（LSxM）纳米粒子作为阴离子交换膜燃料电池的阴极。为了减小LSxM的粒径，提高其在KB上的分散性，采用两种非离子表面活性剂聚乙二醇壬基苯基醚和聚乙二醇单壬基苯基醚，采用反胶束法制备了LSxM。20重量% L0。83 S 0。由后者制备的17 M/KB由LS 0的精细纳米颗粒组成。17米（平均直径：约。4.3 nm），并表现出比45重量%LS 0更高的氧还原反应活性。23 M/KB，在我们以前的报告中通过共沉淀法制备。使用20重量%LS 0. 17 M/KB阴极催化剂可稳定运行，最大功率密度为129 mW cm-2，与传统的46wt%Pt/C阴极催化剂（138 mW cm-2）相当。
Perovskite La1-xSrxMnO3 (LSxM) nanoparticles supported on Ketjen Black (KB) were synthesized as the cathode of anionexchange membrane fuel cells. To reduce the particle size of LSxM and to improve the dispersivity on KB, a reverse micelle method was applied by using two kinds of non-ionic surfactants, ie polyethylene glycol nonyl-phenyl ether and polyethyleneglycol mono-4-nonylphenyl ether. 20 wt% L0. 83S0. 17M/KB prepared by the latter surfactant consisted of fine nanoparticles of LS0. 17M (average diameter: ca. 4.3 nm), and exhibited a higher activity for oxygen reduction reaction than 45 wt% LS0. 23M/KB prepared by a co-precipitation method in our previous report. A single cell using the 20 wt% LS0. 17M/KB catalyst for cathode could be stably operated and gave the maximum power density of 129 mW cm-2, which was comparable to that using a conventional 46 wt% Pt/C as the cathode (138 mW cm-2).