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The Quasi-Pt-Allotrope Catalyst: Hollow PtCo@single-Atom Pt 1 on Nitrogen-Doped Carbon toward Superior Oxygen Reduction

Journal Article


Abstract


  • Single-atom Pt and bimetallic Pt 3 Co are considered the most promising oxygen reduction reaction (ORR) catalysts, with a much lower price than pure Pt. The combination of single-atom Pt and bimetallic Pt 3 Co in a highly active nanomaterial, however, is challenging and vulnerable to agglomeration under realistic reaction conditions, leading to a rapid fall in the ORR. Here, a sustainable quasi-Pt-allotrope catalyst, composed of hollow Pt 3 Co (H-PtCo) alloy cores and N-doped carbon anchoring single atom Pt shells (Pt 1 N-C), is constructed. This unique nanoarchitecture enables the inner and exterior spaces to be easily accessible, exposing an extra-high active surface area and active sites for the penetration of both aqueous and organic electrolytes. Moreover, the novel Pt 1 N-C shells not only effectively protect the H-PtCo cores from agglomeration but also increase the efficiency of the ORR in virtue of the isolated Pt atoms. Thus, the H-PtCo@Pt 1 N-C catalyst exhibits stable ORR without any fade over a prolonged 10 000 cycle test at 0.9 V in HClO 4 solution. Furthermore, this material can offer efficient and stable ORR activities in various organic electrolytes, indicating its great potential for next-generation lithium–air batteries as well.

Publication Date


  • 2019

Citation


  • Lai, W., Zhang, B., Hu, Z., Qu, X., Jiang, Y., Wang, Y., Wang, J., Liu, H. Kun. & Chou, S. (2019). The Quasi-Pt-Allotrope Catalyst: Hollow PtCo@single-Atom Pt 1 on Nitrogen-Doped Carbon toward Superior Oxygen Reduction. Advanced Functional Materials, 29 (13), 1807340-1-1807340-10.

Scopus Eid


  • 2-s2.0-85061237579

Start Page


  • 1807340-1

End Page


  • 1807340-10

Volume


  • 29

Issue


  • 13

Place Of Publication


  • Germany

Abstract


  • Single-atom Pt and bimetallic Pt 3 Co are considered the most promising oxygen reduction reaction (ORR) catalysts, with a much lower price than pure Pt. The combination of single-atom Pt and bimetallic Pt 3 Co in a highly active nanomaterial, however, is challenging and vulnerable to agglomeration under realistic reaction conditions, leading to a rapid fall in the ORR. Here, a sustainable quasi-Pt-allotrope catalyst, composed of hollow Pt 3 Co (H-PtCo) alloy cores and N-doped carbon anchoring single atom Pt shells (Pt 1 N-C), is constructed. This unique nanoarchitecture enables the inner and exterior spaces to be easily accessible, exposing an extra-high active surface area and active sites for the penetration of both aqueous and organic electrolytes. Moreover, the novel Pt 1 N-C shells not only effectively protect the H-PtCo cores from agglomeration but also increase the efficiency of the ORR in virtue of the isolated Pt atoms. Thus, the H-PtCo@Pt 1 N-C catalyst exhibits stable ORR without any fade over a prolonged 10 000 cycle test at 0.9 V in HClO 4 solution. Furthermore, this material can offer efficient and stable ORR activities in various organic electrolytes, indicating its great potential for next-generation lithium–air batteries as well.

Publication Date


  • 2019

Citation


  • Lai, W., Zhang, B., Hu, Z., Qu, X., Jiang, Y., Wang, Y., Wang, J., Liu, H. Kun. & Chou, S. (2019). The Quasi-Pt-Allotrope Catalyst: Hollow PtCo@single-Atom Pt 1 on Nitrogen-Doped Carbon toward Superior Oxygen Reduction. Advanced Functional Materials, 29 (13), 1807340-1-1807340-10.

Scopus Eid


  • 2-s2.0-85061237579

Start Page


  • 1807340-1

End Page


  • 1807340-10

Volume


  • 29

Issue


  • 13

Place Of Publication


  • Germany