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Enhancing the electrochemical performance of na metal anodes via local eutectic melting in porous Al-Cu alloy hosts

nano Research 2024年第7期17卷 6111-6118页

作者： Tao Hu Qiang Wu Cheng Wang Jialu Chen Fu Su Zibo Chen Yizhou Wang Jianyu Chen Yanwen Ma Jin Zhao State Key Laboratory of Organic Electronics and Information Displays&Institute of Advanced Materials(IAM) Nanjing University of Posts&Telecommunications9 Wenyuan RoadNanjing 210023China Materials Science and Engineering King Abdullah University of Science and Technology(KAUST)Thuwal 23955-6900Saudi Arabia Suzhou Vocational Institute of Industrial Technology 1 Zhineng AvenueSuzhou International Education ParkSuzhou 215104China

Sodium(na)metal batteries(SMBs)have emerged as promising alternatives to lithium metal batteries for large-scale energy storage applications,owing to their cost-effectiveness,abundance,and favorable redox ***,the practical implementation of SMBs faces several challenges associated with the na metal anode,including the formation of dendrites,low Coulombic efficiency,and capacity ***,we propose a novel approach to enhance the electrochemical performance of na metal anodes through a porous Al-Cu alloy host(PAC)fabricated by a local eutectic melting *** local eutectic melting facilitates the development of a conductive network,offering mechanical support,and the porous structure provides abundant channels for the diffusion of na ions and accommodates volume fluctuations in the na metal during charge–discharge ***,the PAC exhibits a high average Coulombic efficiency of 99.8%at 1 mA·cm^(−2)for 1 mAh·cm^(−2)and a low voltage polarization of 19 mV during 500 *** study provides valuable insight into the design and fabrication of highperformance na metal anodes,which hold significant promise for the advancements of next-generation energy storage systems.

关键词： na metal anode porous Al-Cu alloy porous current collector local eutectic melting

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Dual-Functional Electrode Promoting Dendrite-Free and CO_(2) Utilization Enabled High-Reversible Symmetric na-CO_(2) Batteries

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Energy & Environmental Materials 2024年第3期7卷 123-132页

作者： Changfan Xu Jiajia Qiu Yulian Dong Yueliang Li Yonglong Shen Huaping Zhao Ute Kaiser Guosheng Shao Yong Lei Fachgebiet Angewandte nanophysik Institut für Physik&IMN MacroNanoTechnische Universität Ilmenau 98693Ilmenau Germany Central Facility for Electron Microscopy Electron Microscopy Group of Materials ScienceUlm UniversityUlm 89081Germany School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China

Sodium-carbon dioxide(na-CO_(2))batteries are regarded as promising energy storage technologies because of their impressive theoretical energy density and CO_(2)reutilization,but their practical applications are restricted by uncontrollable sodium dendrite growth and poor electrochemical kinetics of CO_(2)*** suitable multifunctional electrodes for dendritefree anodes and kinetics-enhanced CO_(2)cathodes is considered one of the most important ways to advance the practical application of na-CO_(2)***,RuO2 nanoparticles encapsulated in carbon paper(RuCP)are rationally designed and employed as both na anode host and CO_(2)cathode in na-CO_(2)*** outstanding sodiophilicity and high catalytic activity of RuCP electrodes can simultaneously contribute to homogenous na+distribution and dendrite-free sodium structure at the anode,as well as strengthen discharge and charge kinetics at the *** morphological evolution confirmed the uniform deposition of na on RuCP anode with dense and flat interfaces,delivering enhanced Coulombic efficiency of 99.5%and cycling stability near 1500 ***,na-CO_(2)batteries with RuCP cathode demonstrated excellent cycling stability(>350 cycles).Significantly,implementation of a dendrite-free RuCP@na anode and catalytic-site-rich RuCP cathode allowed for the construction of a symmetric na-CO_(2)battery with long-duration cyclability,offering inspiration for extensive practical uses of na-CO_(2)batteries.

关键词： CO_(2)cathode dendrite free electrocatalysis na metal anode symmetric CO_(2)batteries

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氧调节原生负极-固态电解质界面层助力高稳定性固态钠金属电池

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Science Bulletin 2024年第1期69卷 49-58页

作者：曹克爽夏宇凡李皓盛黄慧琴 Sikandar Iqbal Muhammad Yousaf 徐斌孙文平严密潘洪革姜银珠 School of Materials Science and Engineering Zhejiang UniversityHangzhou 310027China ZJU-Hangzhou Global Scientific and Technological Innovation Center Zhejiang UniversityHangzhou 311200China Mechanical and Construction Engineering Faculty of Engineering and EnvironmentNorthumbria UniversityNewcastle upon Tyne NE18STUK Institute of Science and Technology for New Energy Xi’an Technological UniversityXi’an 710021China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Baotou Research Institute of Rare EarthsBaotou 014030China

Solid-state sodium metal batteries utilizing inorganic solid electrolytes(SEs)hold immense potentials such as intrinsical safety,high energy density,and environmental ***,the interfacial inhomogeneity/instability at the anode-SE interface usually triggers the penetration of sodium dendrites into the electrolyte,leading to short circuit and battery ***,confronting with the original nonuniform and high-resistance solid electrolyte interphase(SEI)at the na-na_(3)Zr_(2)Si_(2)PO_(12)interface,an oxygen-regulated SEI innovative approach is proposed to enhance the cycling stability of anode-SEs interface,through a spontaneous reaction between the metallic sodium(containing trace amounts of oxygen)and the na_(3)Zr_(2)Si_(2)POi_(2)*** oxygen-regulated spontaneous SEI is thin,uniform,and kinetically stable to facilitate homogenous interfacial na^+transportation,Benefitting from the optimized SEI,the assembled symmetric cell exhibits an ultra-stable sodium plating/stripping cycle for over 6600 h under a practical capacity of 3 mAh cm^(-2).Qua si-sol id-state batteries with na_(3)V_(2)(PO_(4))_(3)cathode deliver excellent cyclability over 500 cycles at a rate of 0.5 C(1 C=117 mA cm^(-2))with a high capacity retention of95.4%.This oxygen-regulated SEI strategy may offer a potential avenue for the future development of high-energy-density solid-state metal batteries.

关键词： na metal anode Solid-state batteries naSICON anode interface Solid electrolyte interphase

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Advanced na metal anodes

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Journal of Energy Chemistry 2018年第6期27卷 1584-1596页

作者： Chenglong Zhao Yaxiang Lu Jinming Yue Du Pan Yuruo Qi Yong-Sheng Hu Liquan Chen Key Laboratory for Renewable Energy Beijing Key Laboratory for New Energy Materials and Devices Beijing National Laboratory for Condensed Matter Physics Institute of Physics Chinese Academy of Sciences Beijing 100190 China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100190 China

na metal anode, benefiting from its high theoretical capacity and lowest electrochemical potential, ~sone of the most favorable candidates for future na-based batteries with high energy density. Dendritegrowth, volume change and high reactivity are the formidable challenges in terms of good cycling perfor-mance and high Coulombic efficiency as well as an expected safety guarantee of na metal anode for thepractical application. Solid electrolyte interphase （SEI） layer as an indispensable component of a battery,its formation and stability play the critical role in the feasibility of na metal anode. In this review, wefirst discuss the current consideration and challenges of na metal anode, and then summarize severalstrategies to suppress dendrite growth and improve electrochemical performance, including interface en-gineering, electrolyte composition, electrode construction, and so on. Finally, the conclusion and futureperspective of potential development on na metal anode are proposed.

关键词： na metal anode Solid electrolyte interphase Electrolyte Dendrite na-metal batteries

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Sodiophilic and conductive carbon cloth guides sodium dendrite-free na metal electrodeposition

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Journal of Energy Chemistry 2021年第10期30卷 61-70,I0003页

作者： Haijun Liu Markus Osenberg Ling Ni André Hilger Libao Chen Dong Zhou Kang Dong Tobias Arlt Xiayin Yao Xiaogang Wang Ingo Manke Fu Sun Qingdao Institute of Bioenergy and Bioprocess Technology Chinese Academy of Sciences 266101 QingdaoShandongChina Institute of Applied Materials Helmholtz-Zentrum Berlin für Materialien und Energie GmbH Hahn-Meitner-Platz 114109 BerlinGermany State Key Laboratory for Powder metallurgy Central South University410083 ChangshaHunanChina Ningbo Institute of Materials Technology&Engineering Chinese Academy of Sciences 315201 NingboZhejiangChina

Sodium metal battery(SMB)technology is one of the most promising candidates for next-generation rechargeable energy storage systems due to its high theoretical capacity and economical ***,its practical implementation is hindered by several challenges including short life-span and fast capacity decay,which is closely related to the uncontrollable generation of the sodium ***,a nitrogen and oxygen co-doped three-dimensional carbon cloth with hollow tubular fiber units was constructed as the host material for na plating(na@CC)to tackle these *** obtained composite electrode can effectively reduce the nucleation overpotential of na,guide the homogeneous na^(+)flux,increase the kinetics of na electrodeposition,lower the effective current density and eventually suppress the formation of electrochemically inactive na *** a result,batteries built with the na@CC composites exhibited stable long-term cycling *** gain an in-depth and comprehensive understanding of such phenomena,non-destructive and three-dimensional synchrotron X-ray tomography was employed to investigate the cycled ***,the COMSOL Multiphysics simulation was further employed to reveal the na electrodeposition *** current work not only showcases the feasibility of currently proposed sodiophilic 3 D na@CC composite electrode but also provides fundamental insights into the underlying working mechanisms that govern its outstanding electrochemical performance.

关键词： na metal anode Dendrite-free electrode Sodiophilicity Synchrotron X-ray imaging Tomography

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