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Nanosheets/Mesopore Structured Co3O4@CMK‐3 Composite as an Electrocatalyst for the Oxygen Reduction Reaction
ChemCatChem ( IF 3.8 ) Pub Date : 2018-02-23 , DOI: 10.1002/cctc.201701822 Lang Gan 1 , Mengran Wang 1 , Langtao Hu 1 , Jing Fang 1 , Yanqing Lai 1 , Jie Li 1
ChemCatChem ( IF 3.8 ) Pub Date : 2018-02-23 , DOI: 10.1002/cctc.201701822 Lang Gan 1 , Mengran Wang 1 , Langtao Hu 1 , Jing Fang 1 , Yanqing Lai 1 , Jie Li 1
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The exploration of highly effective and low‐cost non‐noble‐metal electrocatalysts for the oxygen reduction reaction (ORR) will have a significant impact on the area of fuel cells and metal–air batteries. Here, we report a facile, efficient, and environmentally friendly method to deposit transition metal oxide nanosheets (NSs) on the backbone of ordered mesoporous carbon (CMK‐3) by the pyrolysis of the metal‐precursor@CMK‐3. The optimized CMK‐3 catalyst with a coating of Co3O4 NSs possesses a high surface area of 2396 m2 g−1 and demonstrates an excellent electrocatalytic activity towards the ORR in alkaline media, which is much better than that of other transition metal oxide@CMK‐3 catalysts and other carbon‐based catalysts (such as carbon nanotubes). In addition, the as‐prepared catalyst possesses a comparable electrochemical performance and a superior durability and higher tolerance to methanol compared with commercially available Pt/C, which can be ascribed to the distinctive structure of the nanosheets and mesopores, indicative of potential applications in metal–air batteries.
中文翻译：
纳米片/中孔结构的Co3O4 @ CMK-3复合材料作为氧还原反应的电催化剂
探索用于氧气还原反应（ORR）的高效，低成本非贵金属电催化剂将对燃料电池和金属空气电池的面积产生重大影响。在这里，我们报告了一种通过金属precursor @ CMK-3的热解将过渡金属氧化物纳米片（NSs）沉积在有序介孔碳（CMK-3）的骨架上的简便，高效且环保的方法。经过优化的带有Co 3 O 4 NSs涂层的CMK-3催化剂具有2396 m 2 g -1的高表面积在碱性介质中对ORR具有优异的电催化活性，这比其他过渡金属氧化物@ CMK-3催化剂和其他碳基催化剂（例如碳纳米管）要好得多。此外，与市售Pt / C相比，所制得的催化剂具有可比的电化学性能，优异的耐久性和对甲醇的耐受性，这可归因于纳米片和中孔的独特结构，这表明了其在金属中的潜在应用–空气电池。
更新日期：2018-02-23
中文翻译：
纳米片/中孔结构的Co3O4 @ CMK-3复合材料作为氧还原反应的电催化剂
探索用于氧气还原反应（ORR）的高效，低成本非贵金属电催化剂将对燃料电池和金属空气电池的面积产生重大影响。在这里，我们报告了一种通过金属precursor @ CMK-3的热解将过渡金属氧化物纳米片（NSs）沉积在有序介孔碳（CMK-3）的骨架上的简便，高效且环保的方法。经过优化的带有Co 3 O 4 NSs涂层的CMK-3催化剂具有2396 m 2 g -1的高表面积在碱性介质中对ORR具有优异的电催化活性，这比其他过渡金属氧化物@ CMK-3催化剂和其他碳基催化剂（例如碳纳米管）要好得多。此外，与市售Pt / C相比，所制得的催化剂具有可比的电化学性能，优异的耐久性和对甲醇的耐受性，这可归因于纳米片和中孔的独特结构，这表明了其在金属中的潜在应用–空气电池。
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