Abstract：
:For the large-scale sustainable implementation of polymer electrolyte membrane fuel cells in vehicles, high-performance electrocatalysts with low platinum consumption are desirable for use as cathode material during the oxygen reduction reaction in fuel cells. Here we report a carbon black-supported cost-effective, efficient and durable platinum single-atom electrocatalyst with carbon monoxide/methanol tolerance for the cathodic oxygen reduction reaction. The acidic single-cell with such a catalyst as cathode delivers high performance, with power density up to 680 mW cm-2 at 80 °C with a low platinum loading of 0.09 mgPt cm-2, corresponding to a platinum utilization of 0.13 gPt kW-1 in the fuel cell. Good fuel cell durability is also observed. Theoretical calculations reveal that the main effective sites on such platinum single-atom electrocatalysts are single-pyridinic-nitrogen-atom-anchored single-platinum-atom centres, which are tolerant to carbon monoxide/methanol, but highly active for the oxygen reduction reaction.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Liu J,Jiao M,Lu L,Barkholtz HM,Li Y,Wang Y,Jiang L,Wu Z,Liu DJ,Zhuang L,Ma C,Zeng J,Zhang B,Su D,Song P,Xing W,Xu W,Wang Y,Jiang Z,Sun Gdoi
10.1038/ncomms15938subject
Has Abstractpub_date
2017-07-24 00:00:00pages
15938issn
2041-1723pii
ncomms15938journal_volume
8pub_type
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