Low Temperature Tetragonal Tungsten Bronze Oxides for Li-ion Storage

doi:10.1007/s40242-024-4173-7

高等学校化学研究 ›› 2024, Vol. 40 ›› Issue (5): 922-926.doi: 10.1007/s40242-024-4173-7

Low Temperature Tetragonal Tungsten Bronze Oxides for Li-ion Storage

XU Chengxin^1,2, ZHANG Wenda^2,3, LOU Chenjie², LI Chengyu², XU Ligang², SHI Yongchao², LIU Jie², LUO Huajie⁴, FU Jipeng⁵, KUANG Xiaojun^1,3, TANG Mingxue^2,4

1. Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541006, P. R. China;
2. Center for High Pressure Science and Technology Advanced Research, Beijing 100193, P. R. China;
3. Guangxi Key Laboratory of Optic and Electronic Materials and Devices, Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, P. R. China;
4. School of Materials Science and Engineering & Key Laboratory of Advanced Materials and Devices for Post-Moore Chips, Ministry of Education, University of Science and Technology Beijing, Beijing 100083, P. R. China;
5. Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang Province, Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou 310018, P. R. China

收稿日期:2024-08-07 出版日期:2024-10-01 发布日期:2024-09-26
通讯作者: KUANG Xiaojun,kuangxj@glut.edu.cn;TANG Mingxue,mingxue.tang@hpstar.ac.cn E-mail:kuangxj@glut.edu.cn;mingxue.tang@hpstar.ac.cn
基金资助:
This work was supported by the National Natural Science Foundation of China (Nos.22090043,21622101) and the Guangxi Natural Science Foundation,China (No.2019GXNSFGA245006).

Low Temperature Tetragonal Tungsten Bronze Oxides for Li-ion Storage

XU Chengxin^1,2, ZHANG Wenda^2,3, LOU Chenjie², LI Chengyu², XU Ligang², SHI Yongchao², LIU Jie², LUO Huajie⁴, FU Jipeng⁵, KUANG Xiaojun^1,3, TANG Mingxue^2,4

1. Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials, College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541006, P. R. China;
2. Center for High Pressure Science and Technology Advanced Research, Beijing 100193, P. R. China;
3. Guangxi Key Laboratory of Optic and Electronic Materials and Devices, Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, P. R. China;
4. School of Materials Science and Engineering & Key Laboratory of Advanced Materials and Devices for Post-Moore Chips, Ministry of Education, University of Science and Technology Beijing, Beijing 100083, P. R. China;
5. Key Laboratory of Rare Earth Optoelectronic Materials and Devices of Zhejiang Province, Institute of Optoelectronic Materials and Devices, China Jiliang University, Hangzhou 310018, P. R. China

Received:2024-08-07 Online:2024-10-01 Published:2024-09-26
Contact: KUANG Xiaojun,kuangxj@glut.edu.cn;TANG Mingxue,mingxue.tang@hpstar.ac.cn E-mail:kuangxj@glut.edu.cn;mingxue.tang@hpstar.ac.cn
Supported by:
This work was supported by the National Natural Science Foundation of China (Nos.22090043,21622101) and the Guangxi Natural Science Foundation,China (No.2019GXNSFGA245006).

摘要/Abstract

摘要： Nb-based tungsten bronze oxides have emerged as attractive materials in various fields, owing to the structural openings and simple synthesis method. In this work, the tetragonal tungsten bronze (TTB) NaWNbO₆ was prepared by solid state reaction at a relatively low temperature of 775 ℃. The local structure was systematically studied by solid state nuclear magnetic resonance (SSNMR) with the aid of transition electronic microscopy (TEM). The analysis indicates that NaWNbO₆ has pentagonal, square, and triangular tunnels. Notably, square tunnels were partly occupied (50%) by Na, which creates the ability for the Li-ion storage with a volumetric capacity of 210 A·h·L^-1 at 0.2 C. The 2D ²³Na-²³Na EXSY results further suggest the ability of ions to fast exchange between the tetragonal and pentagonal tunnels, resulting in a high-rate performance 20 C.

关键词: Tetragonal tungsten bronze, Solid-state ²³Na NMR, ⁹³Nb NMR spectrum, Fast ion exchange

Abstract: Nb-based tungsten bronze oxides have emerged as attractive materials in various fields, owing to the structural openings and simple synthesis method. In this work, the tetragonal tungsten bronze (TTB) NaWNbO₆ was prepared by solid state reaction at a relatively low temperature of 775 ℃. The local structure was systematically studied by solid state nuclear magnetic resonance (SSNMR) with the aid of transition electronic microscopy (TEM). The analysis indicates that NaWNbO₆ has pentagonal, square, and triangular tunnels. Notably, square tunnels were partly occupied (50%) by Na, which creates the ability for the Li-ion storage with a volumetric capacity of 210 A·h·L^-1 at 0.2 C. The 2D ²³Na-²³Na EXSY results further suggest the ability of ions to fast exchange between the tetragonal and pentagonal tunnels, resulting in a high-rate performance 20 C.

Key words: Tetragonal tungsten bronze, Solid-state ²³Na NMR, ⁹³Nb NMR spectrum, Fast ion exchange

XU Chengxin, ZHANG Wenda, LOU Chenjie, LI Chengyu, XU Ligang, SHI Yongchao, LIU Jie, LUO Huajie, FU Jipeng, KUANG Xiaojun, TANG Mingxue. Low Temperature Tetragonal Tungsten Bronze Oxides for Li-ion Storage[J]. 高等学校化学研究, 2024, 40(5): 922-926.

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Low Temperature Tetragonal Tungsten Bronze Oxides for Li-ion Storage

Low Temperature Tetragonal Tungsten Bronze Oxides for Li-ion Storage

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