Tuning the Electrochemical Property of the Ultrafine Metal‐oxide Nanoclusters by Iron Phthalocyanine as Efficient Catalysts for Energy Storage and Conversion. Issue 1 (28th March 2019)

• Record Type: Journal Article
• Authors: Cheng, Yi; Wu, Xing; Veder, Jean‐Pierre; Thomsen, Lars; Jiang, San Ping; Wang, Shuangyin
• Is Part Of: Energy & environmental materials. Volume 2:Issue 1(2019)
• Page Start: 5
• Page End: 17
• Publication Date: 2019-03-28
• Subjects: CO2 reduction reaction -- iron phthalocyanine -- metal‐oxide nanoclusters -- oxygen evolution reaction -- oxygen reduction reaction; Power resources -- Environmental aspects -- Periodicals; Renewable energy sources -- Periodicals; Environmental engineering -- Periodicals; 333.79
• DOI: 10.1002/eem2.12029
• Languages: English
• ISSNs: 2575-0356

Abstract

Abstract : Nanoclusters (NCs) have been demonstrated of outstanding performance in electrochemical energy storage and conversion technologies due to their strong quantum confinement effects and strong interaction with supports. Here, we developed a class of ultrafine metal‐oxide (MO x, M = Fe, Co and Ni) NCs incorporated with iron phthalocyanine (FePc), MO x /FePc‐G, supported on graphene as high‐performance catalysts for oxygen reduction reaction (ORR), oxygen evolution reaction (OER), and carbon dioxide reduction (CO2 RR). The high activities for ORR and OER are attributed to the electron donation and accepting ability of the highly redox active of FePc‐G that could tune the properties of MO x . The FeO x /FePc‐G exhibits an extremely positive half‐wave potential ( E 1/2 ) of 0.888 and 0.610 V for ORR in alkaline and neutral conditions, respectively, which is around 60 mV more positive than that of Pt/C. And NiO x /FePc‐G shows similar OER activity with the state‐of‐the‐art catalysts, Ir/C, and better performance than NiFeO NCs supported on graphene. Remarkably, the CoO x /FePc‐G and NiO x /FePc‐G show high activity and selectivity to reduce CO2 into CO with a low onset potential of −0.22 V (overpotential is 0.11 V). Abstract : The ultrafine metal‐oxide nanoclusters can be tuned by the closely adjacent iron phthalocyanine (FePc), and the high electron flexibility of the FePc could assist the electrons transfer process for oxygen reduction, oxygen evolution, and carbon dioxide reduction.