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首页> 外文期刊>Journal Of The South African Institute Of Mining & Metallurgy >Alternative carbon materials as practical and more durable fuel cell electrocatalyst supports than conventional carbon blacks
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Alternative carbon materials as practical and more durable fuel cell electrocatalyst supports than conventional carbon blacks

机译：替代碳材料作为实用和更耐用的燃料电池电催化剂支持，而不是常规炭黑

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摘要

Conventional low-temperature proton exchange membrane fuel cell (LTPEMFC) electrocatalyst supports suffer from excessively high corrosion rates. In this work, several alternative carbons were investigated in terms of their viability to produce 'drop-in' alternative electrocatalysts to the conven tional materials while providing significantly enhanced support corrosion resistance. This was to establish their potential to serve both current and future markets. The materials examined were: partially graphitised Vulcan, a hierarchical porous graphene-like material and commercial graphitised carbon nanofiberes (CNFs). Samples were prepared at 40 wt% Pt loading and performance compared to conventional Pt (40wt%)/Vulcan and Pt (40wt%)/Ketjenblack. CNFs were the only material to display improved corrosion resistance over the conventional supports. The catalyst did, however, suffer from comparatively low beginning-of-life performance. This work did nonetheless demonstrate good promise for the commercial CNF support in producing functional electrocatalysts that could (a) potentially be directly substituted into well-established conventional catalyst-based MEA manufacturing processes and (b) offer considerably enhanced support corrosion resistance.
机译：常规的低温质子交换膜燃料电池（LTPEMFC）电催化剂载体遭受过高的腐蚀速率。在这项工作中，在可行性方面调查了几种替代的碳，以生产“替代”替代电催化剂，同时提供显着提高的耐腐蚀性。这是为了建立潜力，即服务目前和未来的市场。所检查的材料是：部分石墨化的硫磺，一种分层多孔石墨烯样材料和商业石墨化的碳纳米烃（CNF）。与常规Pt（40wt％）/ vulcan和Pt（40wt％）/ ketjenblack相比，以40wt％的Pt加载和性能制备样品。 CNFS是唯一用于通过传统支撑件显示出改善耐腐蚀性的材料。然而，催化剂患有相对低的寿命性能。尽管如此，这项工作表明，在生产功能电催化剂中，表明可以（a）可能直接被取代成良好的常规催化剂的MEA制造方法，并且（b）提供了显着提高的耐腐蚀性耐腐蚀性的良好承诺。

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