Carbonized Nanoscale Metal–Organic Frameworks as High Performance Electrocatalyst for Oxygen Reduction Reaction

The oxygen reduction reaction (ORR) is one of the key steps in clean and efficient energy conversion techniques such as in fuel cells and metal–air batteries; however, several disadvantages of current ORRs including the kinetically sluggish process and expensive catalysts hinder mass production of t...

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Veröffentlicht in:ACS nano 2014-12, Vol.8 (12), p.12660-12668
Hauptverfasser: Zhao, Shenlong, Yin, Huajie, Du, Lei, He, Liangcan, Zhao, Kun, Chang, Lin, Yin, Geping, Zhao, Huijun, Liu, Shaoqin, Tang, Zhiyong
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container_end_page 12668
container_issue 12
container_start_page 12660
container_title ACS nano
container_volume 8
creator Zhao, Shenlong
Yin, Huajie
Du, Lei
He, Liangcan
Zhao, Kun
Chang, Lin
Yin, Geping
Zhao, Huijun
Liu, Shaoqin
Tang, Zhiyong
description The oxygen reduction reaction (ORR) is one of the key steps in clean and efficient energy conversion techniques such as in fuel cells and metal–air batteries; however, several disadvantages of current ORRs including the kinetically sluggish process and expensive catalysts hinder mass production of these devices. Herein, we develop carbonized nanoparticles, which are derived from monodisperse nanoscale metal organic frameworks (MIL-88B-NH3), as the high performance ORR catalysts. The onset potential and the half-wave potential for the ORR at these carbonized nanoparticles is up to 1.03 and 0.92 V (vs RHE) in 0.1 M KOH solution, respectively, which represents the best ORR activity of all the non-noble metal catalysts reported so far. Furthermore, when used as the cathode of the alkaline direct fuel cell, the power density obtained with the carbonized nanoparticles reaches 22.7 mW/cm2, 1.7 times higher than the commercial Pt/C catalysts.
doi_str_mv 10.1021/nn505582e
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title Carbonized Nanoscale Metal–Organic Frameworks as High Performance Electrocatalyst for Oxygen Reduction Reaction
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