一种用于高效氧还原的集成铂-纳米碳电催化剂。
An integrated platinum-nanocarbon electrocatalyst for efficient oxygen reduction.
作者信息
Huang Lei, Wei Min, Qi Ruijuan, Dong Chung-Li, Dang Dai, Yang Cheng-Chieh, Xia Chenfeng, Chen Chao, Zaman Shahid, Li Fu-Min, You Bo, Xia Bao Yu
机构信息
School of Chemistry and Chemical Engineering, Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology (HUST), 1037 Luoyu Rd, Wuhan, 430074, China.
The Institute for Advanced Studies, Wuhan University, 299 Bayi Rd, Wuhan, 430072, China.
出版信息
Nat Commun. 2022 Nov 7;13(1):6703. doi: 10.1038/s41467-022-34444-w.
Efficient and robust platinum-carbon electrocatalysts are of great significance for the long-term service of high-performance fuel cells. Here, we report a Pt alloy integrated in a cobalt-nitrogen-nanocarbon matrix by a multiscale design principle for efficient oxygen reduction reaction. This Pt integrated catalyst demonstrates an increased mass activity, 11.7 times higher than that of commercial Pt catalyst, and retains a stability of 98.7% after 30,000 potential cycles. Additionally, this integrated catalyst delivers a current density of 1.50 A cm at 0.6 V in the hydrogen-air fuel cell and achieves a power density of 980 mW cm. Comprehensive investigations demonstrate that the synergistic contribution of components and structure in the platinum-carbon integrated catalyst is responsible for the high-efficiency ORR in fuel cells.
高效且耐用的铂碳电催化剂对于高性能燃料电池的长期运行具有重要意义。在此，我们报告一种通过多尺度设计原则集成在钴氮纳米碳基体中的铂合金，用于高效氧还原反应。这种集成铂催化剂表现出更高的质量活性，比商业铂催化剂高11.7倍，并且在30000次电位循环后仍保持98.7%的稳定性。此外，这种集成催化剂在氢空气燃料电池中于0.6 V时提供1.50 A cm的电流密度，并实现980 mW cm的功率密度。综合研究表明，铂碳集成催化剂中各组分和结构的协同作用是燃料电池中高效氧还原反应的原因。
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