journal article·2020-05-20

Efficient Tetra-Functional Electrocatalyst with Synergetic Effect of Different Active Sites for Multi-Model Energy Conversion and Storage

Sobia Dilpazir, Pengju Ren, Rongji Liu, Menglei Yuan, Muhammad Imran, Zhanjun Liu, Yongbing Xie, He Zhao, Yijun Yang, Xi Wang, Carsten Streb, Guangjin Zhang

ACS Applied Materials & Interfaces· Volume 12· Issue 20
Publisher page

Abstract

Energy crisis and global warming due to excessive CO2 emissions are the two major challenges of the world. Conversion of CO2 into useful fuels along with rechargeable metal air batteries and water splitting is one way to combat the energy crisis, which is bottlenecked due to the lack of multifunctional electrocatalyst. Herein simple but multifunctional electrocatalyst, which combined CoNi nanoalloy, N-doped carbon nanotubes, and single atomic Ni sites together is reported. The prepared electrocatalyst has shown remarkable performance for CO2RR, ORR, OER, and HER. The practical utilization of the catalyst is mansifested by a dual model metal CO2/air battery and water electrolyzer. An excellent CO2RR with FE of 99% is achieved in 0.5 M KHCO3 medium. The catalyst exhibits more positive onset (0.98 V) and half wave potential (0.86 V) than Pt/C for ORR, extremely low overpotential (η10) of 250 mV for OER, and thus the lowest ORR/OER potential gap of 0.62 V. In alkaline medium, the catalyst also shows excellent HER performance with η10 of 49 mV, resulting in the smallest cell bias of 1.57 V for overall water splitting to date. This work provides a new pathway to design more stellar multifunctional electrocatalyst for sustainable and clean renewable energy technology.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Electrocatalysts for Energy Conversion · CO2 Reduction Techniques and Catalysts · Advanced battery technologies research

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

Affiliations

CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, P.R. China

Center of Materials Science and Optoeletronics Engineering, College of Chemistry and Chemical Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

Synfuels China Technology Co. Ltd., Leyuan South Street II, No.1, Yanqi Economic Development Zone, Huairou District, Beijing 101407, China

Institute of Inorganic Chemistry I, Ulm University, Albert-Einstein-Allee 11, D-89081 Ulm, Germany

State Key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Centre for Soft Matter Science and Engineering, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, China

CAS Key Laboratory of Carbon Materials, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China

Key Laboratory of Luminescence and Optical Information, Ministry of Education, School of Science, Beijing Jiaotong University, 100044 Beijing, PR China

Funding

Helmholtz-Gemeinschaft · Ministry of Science and Technology of the People's Republic of China · Deutsche Forschungsgemeinschaft · Youth Innovation Promotion Association of the Chinese Academy of Sciences · Universit?t Ulm · Chinese Academy of Sciences

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