A facile two‐step chemical route using cobalt ions coordinated with EDTA (Co^II/EDTA chelate complex supported on glucose mixture), followed by the in situ pyrolysis process, from 500 to 900 °C, was developed to prepare Co embedded in N‐doped porous carbon hybrids (Co@C−T). The EDTA chelating agent served as both the N source and pore former. The physicochemical characterization results revealed that the pore structure, graphitization degree, and relative content of active centers, e. g., cobalt‐based components and nitrogen species, for Co@C−T electrocatalysts, were tailored by controlling the temperature of pyrolysis. The optimized material generated at 600 °C (Co@C‐600), showed an excellent oxygen reduction reaction activity with an onset potential of 0.91 V vs. RHE, and a half‐wave potential of 0.80 V vs. RHE. In addition, the Co@C‐600 catalyst showed superior durability and stability compared to the benchmark Pt/C.

中文翻译：

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嵌入氮掺杂多孔碳中的原位自支撑钴作为高效减氧电催化剂

利用钴离子与EDTA配合使用的便捷的两步化学路线（Co ^II/ EDTA螯合物在葡萄糖混合物上的负载），然后在500至900°C的温度下进行原位热解工艺，以制备嵌入N掺杂的多孔碳杂化物（Co @ C-T）中的Co. EDTA螯合剂既是氮源又是造孔剂。理化特性结果表明，孔结构，石墨化程度和活性中心的相对含量，例如。例如，通过控制热解温度来定制Co @ C-T电催化剂的钴基组分和氮物种。经过优化的材料在600°C（Co @ C-600）下生成，具有出色的氧还原反应活性，相对于RHE的起始电势为0.91 V，相对于RHE的半波电势为0.80V。此外，与基准Pt / C相比，Co @ C-600催化剂显示出卓越的耐久性和稳定性。