DataVXACS Applied Energy MaterialsPaper
journal article·2024-11-11

Single-Atomic Mn–N–C Catalyst with Hierarchical Pores for Anion Exchange Membrane Fuel Cells: A Mn Confinement Strategy

Kyungmin Im, Jue-Hyuk Jang, Toan Minh Pham, Jeong Hee Lee, Young Moo Lee, Jinsoo Kim, Sung Jong Yoo

ACS Applied Energy Materials· Volume 7· Issue 21
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Source abstract

Abstract

Metal- and nitrogen-doped carbon (M–N-C) catalysts are effective alternatives to oxygen reduction reaction (ORR) catalysts, such as platinum-based systems, in fuel cell technology. Among various transition metals, Mn is an abundant metal; in biological systems, enzymes including Mn effectively catalyze oxygen-evolving reactions at low potentials. Herein, a hollow and single-atom Mn–N–C catalyst was synthesized by using a pseudomorphic replication strategy. This approach is an efficient way to synthesize single-atom Mn catalysts without segregating Mn species. The prepared Mn–N–C hollow spheres exhibited high ORR activity with a half-wave potential of 0.877 V and an onset potential of 1.01 V vs reversible hydrogen electrode. When applied as a cathode in an anion exchange membrane fuel cell, Mn–N–C hollow spheres exhibited a maximum power density of 617 mW/cm 2 and a current density of 785 mA/cm 2 at 0.6 V.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storageCatalysis & surfaces

OpenAlex topics: Electrocatalysts for Energy Conversion · Fuel Cells and Related Materials · Advanced battery technologies research

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

Affiliations

KHU-KIST Department of Converging Science and Technology, Kyung Hee University, 26, Kyungheedae-ro, Dongdaemun-gu, Seoul 02447, Republic of Korea

Hydrogen Fuel Cell Research Center, Korea Institute of Science and Technology (KIST), 5, Hwarang-ro 14-gil, Seongbuk-gu, Seoul 02792, Republic of Korea

Department of Chemical Engineering (Integrated Engineering), Kyung Hee University, 1732, Deogyeong-daero, Giheung-gu, Yongin-si, Gyeonggi-do 17104, Republic of Korea

Department of Energy Engineering, College of Engineering, Hanyang University, Seoul 04763, Republic of Korea

Division of Energy & Environment Technology, KIST School, University of Science and Technology (UST), Seoul 02792, Republic of Korea

Funding

National Research Foundation of Korea · Korea Basic Science Institute · Korea Institute of Energy Technology Evaluation and Planning · Korea Institute for Advancement of Technology · Korea Institute of Science and Technology

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