DataVXACS Materials LettersPaper
journal article·2020-01-06

Two-Dimensional Hierarchical Fe–N–C Electrocatalyst for Zn-Air Batteries with Ultrahigh Specific Capacity

Ruilin Yuan, Wentuan Bi, Tianpei Zhou, Nan Zhang, Cheng’an Zhong, Wangsheng Chu, Wensheng Yan, Qian Xu, Changzheng Wu, Yi Xie

ACS Materials Letters· Volume 2· Issue 1
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Source abstract

Abstract

Promoting the performance of Zn-air batteries urgently requires rational design of electrocatalysts with highly efficient mass and charge transfer capacity. In this study, two-dimensional (2D) hierarchical Fe–N–C materials were developed as highly active oxygen reduction reaction (ORR) catalysts. Benefiting from the enhanced mesoporosity and two orders of magnitude higher electrical conductivity, the as-obtained catalysts unify efficient mass transport and expedite charge transfer. Therefore, Zn-air battery integrated with this catalyst achieves an ultrahigh specific capacity of 798 mAh gZn–1 (close to theoretical value of 820 mAh gZn–1) and excellent durability for over 130 h. Our work paves a new way to engineer the transfer capacity of triple-phase boundary to boost the performance of metal-air battery.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storageCatalysis & surfaces

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

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

Affiliations

Hefei National Laboratory for Physical Sciences at the Microscale, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), and CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230026, People’s Republic of China

National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei, Anhui 230026, China

Funding

Ministry of Education of the People's Republic of China · Ministry of Science and Technology of the People's Republic of China · National Natural Science Foundation of China · Central Committee of the Communist Party · Development Foundation of Hefei Center for Physical Science and Technology · Anhui Provincial Natural Science Foundation

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