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基于Pt纳米结构的三维催化层在燃料电池中使用
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摘要
在燃料电池工作环境下,同时提高Pt基催化剂的活性与稳定性是重大技术挑战。这里,我们制备的的Pt纳米结构的催化剂,其面积比活性优于商业化Pt/C。同时在加速衰减实验中,其稳定性也明显优于商业化Pt/C。将其直接作为三维催化层应用于单池阴极,其H_2-O_2最高功率密度为886.3 mW cm~(-2)和H_2-air最高功率密度为546.2mW cm~(-2).
Improving both of the activity and the stability of the Pt based cathode catalysts in fuel cells is a key technical challenge. Here, we prepare 3D structured Pt nanodendrites catalysts that exhibit higher specific activity than the commercial Pt/C and the Pt nanodendrites also displays significantly enhanced stability as compared with commercial Pt/C in an accelerated stability test. When the 3D structured Pt nanodendrites catalysts were used as the cathode of a single-cell, the high specific power density is 886.3 mW cm~(-2) and 546.2 mW cm~(-2)in H_2-O_2 and H_2-air condition, respectively.
引文
[1]Jakob Kibsgaard et al.J.Am.Chem.Soc.2012,134:7758.
    [2]Shangfeng Jiang et al.J.Power Sources,2015,276:80.

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