Designing Robust Support for Pt Alloy Nanoframes with Durable Oxygen Reduction Reaction Activity

Zhifu Wu; Dai Dang; Xinlong Tian

doi:10.1021/acsami.8b21459

journal article·2019-03-06

Designing Robust Support for Pt Alloy Nanoframes with Durable Oxygen Reduction Reaction Activity

Zhifu Wu, Dai Dang, Xinlong Tian

ACS Applied Materials & Interfaces· Volume 11· Issue 9

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Source abstract

Abstract

Polymer electrolyte membrane fuel cells are appealing to resolve the environmental and energy issues but are still heavily inhibited by the dilemma of fabricating effective and durable electrocatalysts for oxygen reduction reaction (ORR). In this work, highly open Pt3Cu nanoframes and one-dimensional, hollow titanium nitride architectures are both successfully explored and implemented as the new system to replace the traditional Pt–carbon motif. The ORR performance of the obtained electrocatalyst shows specific and mass activities of 5.32 mA cm–2 and 2.43 A mgPt–1, respectively, which are 14.4 and 11.6 times higher than those of the commercial Pt/C. Notably, the novel catalyst also exhibits high stability and a much slower performance degradation than that of the benchmarked Pt3Cu/C with the same durability testing procedures. The comprehensive data confirm that the new type of catalyst possesses a high charge transfer during the ORR process, and the unique structure and synergistic effects between anchored Pt and the support mainly contributes to the high stability. This work provides a strategic method for designing an effective ORR electrocatalyst with desirable stability.

Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage Metals & alloys Polymers Nanomaterials Catalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials · Advanced Memory and Neural Computing

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Materials Science and Engineering, Baise University, Baise, Guangxi 533000, China

College of Materials Science and Engineering, Guilin University of Technology, Guilin, Guangxi 532100, China

School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, Guangdong 510006, China

Key Laboratory of Material Chemistry for Energy Conversion and Storage (Ministry of Education), Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology (HUST), Wuhan 430074, China

Funding

Natural Science Foundation of Guangdong Province · National Natural Science Foundation of China · Guangxi Colleges and Universities Key Subject of Material Physics and Chemistry, Baise University · Education Commission of the Guangdong Province · Key Laboratory of Fuel Cell Technology of Guangdong Province, School of Chemistry and Chemical Engineering

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