Constructing a Fluoride-Ion Tunnel-Structured Interface to Stabilize the Zn Metal Chemistry at 50 °C

Yang, Yihan1; Qu, Guangmeng1; Wei, Zhiquan1; Hu, Tao2; Hu, Yichan2; Wei, Zijian1; Mo, Funian3; Li, Hongfei4; Liang, Guojin2

2024-08-01

10.1002/adfm.202409950

ADVANCED FUNCTIONAL MATERIALS   影响因子和分区

1616-301X

1616-3028

["High-temperature aqueous zinc batteries have recently garnered significant attention for large-scale energy storage. However, spontaneous hydrogen evolution and passivation on the Zn metal anode severely affect its cycling stability under elevated temperature conditions. Herein, a facile strategy is employed to construct a bifunctional composite protective layer comprising an insulating ZnF2 layer combined with Zn affinity conductive tin (Sn) metal. This combination optimally distributes Zn ions (Zn2+) and maintains consistent thermal field distribution around Zn anodes. Moreover, the presence of fluorides on the interface efficiently suppresses the hydrogen evolution reaction, while the Sn metal serves as nucleation seeds with reversible alloying and dealloying process to endow dendrite-free morphology and fast reaction kinetics. Specifically, the symmetric cell with the coated electrode exhibits excellent stability at a current density of 3 mA cm-2 over 420 h at 50 degrees C. When coupled with the modified Zn anode and I2 cathode, the Zn//I2 full cells deliver high areal capacity and substantiate their practical application, exhibiting remarkable high-temperature resilience over 2000 cycles with 97.8% capacity retained at 50 degrees C.","This research develops an in situ composite protective layer comprising an insulating ZnF2 layer combined with high Zn affinity conductive Sn metal, which can effectively distribute Zn ions and maintains consistent thermal field distribution around the Zn anodes. These synergistic effects culminate in a thermally and electrochemically stable Zn anode. image"]

alloy and dealloy process bifunctional composite protective layer reversible Zn anode stable cycling at high temperature

SCI ; EI

英语

其他

National Natural Science Foundation of China["22309036","22379062"] ; Guangdong Basic and Applied Basic Research Foundation[2024A1515010915] ; Shenzhen Municipality under Stability Support Program of Shenzhen Colleges and Universities[GXWD20220817150352006] ; Shenzhen Science and Technology Program["RCBS20221008093222009","JCYJ20230807142508016","JCYJ20230807091802006"] ; State Key Laboratory of New Textile Materials and Advanced Processing Technologies[FZ20230010] ; Shenzhen Stable Support Plan Program for Higher Education Institutions Research Program[20220816131408001]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:001292132000001

WILEY-V C H VERLAG GMBH

MATERIALS SCIENCE

Web of Science

1.Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China
2.Harbin Inst Technol, Sch Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
3.Shenzhen Univ Adv Technol, Fac Mat Sci & Energy Engn, Shenzhen 518055, Guangdong, Peoples R China
4.Southern Univ Sci & Technol, Sch Syst Design & Intelligent Mfg, Shenzhen 518055, Guangdong, Peoples R China

Yang, Yihan,Qu, Guangmeng,Wei, Zhiquan,et al. Constructing a Fluoride-Ion Tunnel-Structured Interface to Stabilize the Zn Metal Chemistry at 50 °C[J]. ADVANCED FUNCTIONAL MATERIALS,2024.

Yang, Yihan.,Qu, Guangmeng.,Wei, Zhiquan.,Hu, Tao.,Hu, Yichan.,...&Liang, Guojin.(2024).Constructing a Fluoride-Ion Tunnel-Structured Interface to Stabilize the Zn Metal Chemistry at 50 °C.ADVANCED FUNCTIONAL MATERIALS.

Yang, Yihan,et al."Constructing a Fluoride-Ion Tunnel-Structured Interface to Stabilize the Zn Metal Chemistry at 50 °C".ADVANCED FUNCTIONAL MATERIALS (2024).