首页|Transforming Cu into Cu2O/RuAl intermetallic heterojunction for lowering the thermodynamic energy barrier of the CO2 reduction and evolution reactions in Li-CO2 battery

Transforming Cu into Cu2O/RuAl intermetallic heterojunction for lowering the thermodynamic energy barrier of the CO2 reduction and evolution reactions in Li-CO2 battery

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
The Li-CO2 battery has been under the spotlight of future battery technologies since it can achieve CO2 utilization and energy conversion simultaneously.However,its advancement is hampered by poor energy efficiency and limited reversibility due to the sluggish kinetics of the CO2 reduction and evolution reactions.Herein,a multiscale nanoporous interpenetrating phase nanohybrid of RuAl intermetallic and Cu2O(MP-Cu2O/RuAl)was carved by driving synchronous phase and microstructure evolutions through dealloying of one RuCuAl master alloy.The built-in RuAl intermetallic and Cu2O closely stack to form abundant nano-interfaces with revolutionized electronic structure.The theoretical simulations reveal that the Cu2O/RuAl interface can distinctly reduce the energy barrier of the Li2CO3 decomposition reac-tion.The interconnected pore channels with large surface area can enhance catalytic site accessibility,mass transfer,and uniform deposition of the discharge products.In situ differential electrochemical mass spectrometry discloses that the CO2-to-electron ratio during charging coincides with the theoretical value of 3/4,demonstrating the high efficacy of MP-Cu2O/RuAl in achieving the recycling of CO2.The deal-loying protocol provides an affordable platform to empower transition metal oxides into high-efficiency electrocatalysts by hybridizing with metallic nano-sponge for advancing the application of Li-CO2 batteries.

IntermetallicCu2OHeterostructureNanoporousLithium-CO2 battery

Wenqing Ma、Jiagang Hou、Siyu Liu、Tianzhen Jian、Jianping Ma、Caixia Xu、Hong Liu

展开 >

Institute for Advanced Interdisciplinary Research(iAIR),Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong,School of Chemistry and Chemical Engineering,University of Jinan,Jinan 250022,Shandong,China

Shandong Sacred Sun Power Sources Co.Ltd.,Qufu 273100,Shandong,China

State Key Laboratory of Crystal Materials,Shandong University,Jinan 250100,Shandong,China

Kyiv College at Qilu University of Technology,Qilu University of Technology(Shandong Academy of Sciences),Jinan 250353,Shandong,China

Nano-Science Center & Department of Chemistry,University of Copenhagen,Copenhagen 2100,Denmark

展开 >

2024

10.1016/j.jechem.2024.07.016

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子：0.654
ISSN：2095-4956
年,卷(期)：2024.98(11)