Graphdiyne scaffold anchored highly dispersed ruthenium nanoparticles as an efficient cathode catalyst for rechargeable Li-CO2 battery

Yiru Ma ¹Huiqi Qu ²Wenna Wang ¹Ziyang Guo ¹Yueqin Yu ¹Feng Liu ³Bin Yu ³Minge Tian ⁴Zhenjiang Li ⁵Bin Li ⁵Lei Wang⁶

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作者信息

1. College of Chemistry and Molecular Engineering,State Key Laboratory Base of Eco-Chemical Engineering,International Science and Technology Cooperation Base of Eco-Chemical Engineering and Green Manufacturing,Qingdao University of Science and Technology,Qingdao 266042,China
2. College of Chemistry and Molecular Engineering,State Key Laboratory Base of Eco-Chemical Engineering,International Science and Technology Cooperation Base of Eco-Chemical Engineering and Green Manufacturing,Qingdao University of Science and Technology,Qingdao 266042,China;College of Chemical Engineering,Qingdao University of Science and Technology,Qingdao 266042,China
3. Biomedical Sensing Engineering Technology Research Center,Shandong University,Ji'nan 250100,China
4. Scientific Green(Shandong)Environmental Technology Co.,Ltd.,Jining Economic Development Zone,Jining 272499,China
5. College of Materials Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,China
6. College of Chemistry and Molecular Engineering,State Key Laboratory Base of Eco-Chemical Engineering,International Science and Technology Cooperation Base of Eco-Chemical Engineering and Green Manufacturing,Qingdao University of Science and Technology,Qingdao 266042,China;College of Environment and Safety Engineering,Qingdao University of Science and Technology,Qingdao 266042,China
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Abstract

Lithium(Li)-CO2 battery is rising as an attractive energy-storage system with the competence of CO2 conversion/fixation.However,its practical development is seriously hindered by the high overpotential.Herein,a rational design on a highly catalytic Li-CO2 battery electrode built by graphdiyne powder as a multi-functional laminar scaffold with anchored highly dispersed Ru nanoparticles is explored.The strong interaction between the abundant acetylenic bond sites of graphdiyne scaffold and Ru nanoparti-cles can effectively promote the electrochemical progress and reduce the voltage polarization.The unique channels architecture of the cathodic catalyst with enough space not only accelerates CO2 diffusion and electrons/Li+transport,but also allows a large amount of accommodation for discharged product(Li2CO3)to assure an advanced capacity.The corresponding Li-CO2 battery displays an advanced discharged ca-pacity of 15,030 mAh/g at 500 mA/g,great capacity retention of 8873 mAh/g at 2 A/g,high coulombic efficiency of 97.6％at 500 mA/g and superior life span for 120 cycles with voltage gap of 1.67 V un-der a restricted capacity of 1000 mAh/g at 500 mA/g.Ex/in-situ studies prove that synergy between Ru nanoparticles and acetylene bonds of GDY can boost the round-trip CO2RR and CO2ER kinetics.

Key words

Nanopores/Li-CO2 battery/Anchored Ru nanoparticles/Graphdiyne/Synergistic effect

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基金项目

国家自然科学基金(21971132)

国家自然科学基金(52072197)

Outstanding Youth Foundation of Shandong Province,China(ZR2019JQ14)

Youth Innovation and Technology Foundation of Shandong Higher Education Institutions,China(2019KJC004)

Major Scientific and Technological Innovation Project(2019JZZY020405)

Major Basic Research Program of Natural Science Foundation of Shandong Province(ZR2020ZD09)

Taishan Scholar Young Talent Program(tsqn201909114)

Key Laboratory of Resource Chemistry,Ministry of Education(KLRC_ME2101)

Scientific and Technological Innovation Promotion Project for Smallmedium Enterprises of Shandong Province(2022TSGC1257)

Major Research Program of Jining City(2020ZDZP024)

高等学校学科创新引智计划(111计划)(D20017)

出版年

2024

中国化学快报(英文版)

中国化学会

中国化学快报(英文版)

CSTPCDCSCD

影响因子：0.771

ISSN：1001-8417

参考文献量1

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