Chaikittisilp Watcharop, Torad Nagy L, Li Cuiling, Imura Masataka, Suzuki Norihiro, Ishihara Shinsuke, Ariga Katsuhiko, Yamauchi Yusuke
World Premier International (WPI) Research Center for Materials, Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), 1-1 Namiki, Tsukuba, Ibaraki 305-0044 (Japan), Homepage: http:www.yamauchi-labo.com.
Chemistry. 2014 Apr 7;20(15):4217-21. doi: 10.1002/chem.201304404. Epub 2014 Mar 12.
Nanoporous carbon-cobalt-oxide hybrid materials are prepared by a simple, two-step, thermal conversion of a cobalt-based metal-organic framework (zeolitic imidazolate framework-9, ZIF-9). ZIF-9 is carbonized in an inert atmosphere to form nanoporous carbon-metallic-cobalt materials, followed by the subsequent thermal oxidation in air, yielding nanoporous carbon-cobalt-oxide hybrids. The resulting hybrid materials are evaluated as electrocatalysts for the oxygen-reduction reaction (ORR) and the oxygen-evolution reaction (OER) in a KOH electrolyte solution. The hybrid materials exhibit similar catalytic activity in the ORR to the benchmark, commercial, Pt/carbon black catalyst, and show better catalytic activity for the OER than the Pt-based catalyst.
通过对钴基金属有机框架（沸石咪唑酯框架-9，ZIF-9）进行简单的两步热转化制备了纳米多孔碳-氧化钴杂化材料。ZIF-9在惰性气氛中碳化形成纳米多孔碳-金属钴材料，随后在空气中进行热氧化，得到纳米多孔碳-氧化钴杂化材料。在KOH电解质溶液中，将所得杂化材料评估为氧还原反应（ORR）和析氧反应（OER）的电催化剂。杂化材料在ORR中表现出与基准商业Pt/炭黑催化剂相似的催化活性，并且在OER中表现出比Pt基催化剂更好的催化活性。
