Rational Design of an Artificial SEI: Alloy/Solid Electrolyte Hybrid Layer for a Highly Reversible Na and K Metal Anode
The practical application of a Na/K-metallic anode is intrinsically hindered by the poor cycle life and safety issues due to the unstable electrode/electrolyte interface and uncontrolled dendrite growth during cycling. Herein, we solve these issues through an in situ reaction of an oxyhalogenide (BiOCl) and Na to construct an artificial solid electrolyte interphase (SEI) layer consisting of an alloy (Na3Bi) and a solid electrolyte (Na3OCl) on the surface of the Na anode. As demonstrated by theoretical and experimental results, such an artificial SEI layer combines the synergistic properties of high ionic conductivity, electronic insulation, and interfacial stability, leading to uniform dendrite-free Na deposition beneath the hybrid SEI layer. The protected Na anode presents a low voltage polarization of 30 mV, achieving an extended cycling life of 700 h at 1 mA cm-2 in the carbonate-based electrolyte. The full cell based on the Na3V2(PO4)3 cathode and hybrid SEI-protected Na anode shows long-term stability. When this strategy is applied to a K metal anode, the protected K anode also reaches a cycling life of over 4000 h at 0.5 mA cm-2 with a low voltage polarization of 100 mV. Our work provides an important insight into the design principles of a stable artificial SEI layer for high-energy-density metal batteries.
NI Journal Papers
National Natural Science Foundation of China["U1910210","52161145101","51925207","51872277","51802302","52072323","22125903"] ; Dalian National Laboratory for Clean Energy ; Fundamental Research Funds for the Central Universities["WK2060140026","WK3430000006"] ; "Transformational Technologies for Clean Energy and Demonstration" Strategic Priority Research Program of the Chinese Academy of Sciences[XDA21000000] ; National Synchrotron Radiation Laboratory[KY2060000173] ; National Key R&D Research Program of China["2018YFA0209600","2017YFA0208300"] ; Dalian Innovation Support Plan for High Level Talents[2019RT09] ; Guangdong-Hong Kong-Macao Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices[2019B121205001] ; Pakistan Science Foundation[PSF-NSFC-IV/Eng/C-NUST (22)]
|WOS Research Area|
Chemistry ; Science & Technology - Other Topics ; Materials Science
Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
|WOS Accession No|
Cited Times [WOS]:2
|Document Type||Journal Article|
|Department||Department of Materials Science and Engineering|
1.Hefei National Research Center for Physical Sciences at the Microscale,Department of Materials Science and Engineering,CAS Key Laboratory of Materials for Energy Conversion,University of Science and Technology of China,Hefei,Anhui,230026,China
2.Hebei Key Laboratory of Photoelectric Control on Surface and Interface,College of Science,Hebei University of Science and Technology,Shijiazhuang,Hebei,050018,China
3.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
4.School of Materials and Energy,Guangdong University of Technology,Guangzhou,Guangdong,510006,China
5.School of Chemical and Materials Engineering,National University of Sciences and Technology,Islamabad,H-12,44000,Pakistan
6.State Key Laboratory of Catalysis,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian,Liaoning,116023,China
7.National Synchrotron Radiation Laboratory,Hefei,Anhui,230026,China
Li，Dongjun,Sun，Yingjie,Li，Menghao,et al. Rational Design of an Artificial SEI: Alloy/Solid Electrolyte Hybrid Layer for a Highly Reversible Na and K Metal Anode[J]. ACS Nano,2022.
Li，Dongjun.,Sun，Yingjie.,Li，Menghao.,Cheng，Xiaolong.,Yao，Yu.,...&Yu，Yan.(2022).Rational Design of an Artificial SEI: Alloy/Solid Electrolyte Hybrid Layer for a Highly Reversible Na and K Metal Anode.ACS Nano.
Li，Dongjun,et al."Rational Design of an Artificial SEI: Alloy/Solid Electrolyte Hybrid Layer for a Highly Reversible Na and K Metal Anode".ACS Nano (2022).
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