文献类型：期刊文献

英文题名：Construction of three-dimensional electronic interconnected Na3V2(PO4)3/C as cathode for sodium ion batteries

作者：Cheng, Cheng[1];Zang, Xiaoxian[1];Hou, Wenxiu[2];Li, Changcong[3];Huang, Qing[3];Hu, Xiangang[3];Sun, Chencheng[3];Zhang, Yu[4];Yang, Jun[2];Ma, Fuyuan[1]

机构：[1]Zhejiang Energy R&D Inst Co Ltd, Key Lab Solar Energy Utilizat & Energy Saving Tec, Hangzhou 311121, Peoples R China;[2]Jiangsu Univ Sci & Technol, Sch Mat Sci & Engn, Zhenjiang 212003, Jiangsu, Peoples R China;[3]Changshu Inst Technol, Sch Elect & Informat Engn, Changshu 215500, Jiangsu, Peoples R China;[4]East China Univ Sci & Technol, Sch Mech & Power Engn, 130 Meilong Rd, Shanghai 200237, Peoples R China

年份：2022

卷号：899

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：;EI(收录号：20220111415939);WOS:【SCI-EXPANDED(收录号:WOS:000767378000004)】；

基金：The project was supported by Jiangsu Provincial Founds for the Young Scholars of China (BK20190978) and National Natural Science Foundation of China (22109044). This work was also supported by the Key R&D Program of Zhejiang Province (2019C01155).

语种：英文

外文关键词：Sodium-ion batteries; Na3V2(PO4)(3)/C; Citric acid; Three-dimensional porous

摘要：The NASICON (Sodium super ion conductor) type of Na3V2(PO4) (NVP) has a great potential for energy storage application due to its high voltage plateau, three-dimensional (3D) ionic diffusion channel, perfect thermal stability, and high structural robustness. Here, Na3V2(PO4)-based composites with 3D porous carbon skeleton structure were synthesized via hydrothermal methods. After a series of hydrolysis and polymerization processes, transparent colloid mainly containing (NH4)(4)Na2V10O28 phase was formed. The 3D porous hydrogel with the (NH4)(4)Na-2[V10O28]center dot 10H(2)O phase was produced by adjusting the reaction time. The product has a lamellar structure, and its ion is suitable to grow the nanosheets, and the present PO43- groups may be distributed in the (NH4)(4)Na-2[V10O28]center dot 10H(2)O phase of the interlayer structure, leading to the enhanced electronic conductivity. The 3D porous Na3V2(PO4)/C (NVP/C) with the size of 100-200 nm particles can be used as cathode for sodium ion batteries. The NVP/C delivers a specific capacity of 62.1 mAh g(-1) at 10 C. The excellent stability of NVP/C can be obtained with 98% capacity retention after 140 cycles at 1 C. After 2000 cycles (5 C), the capacity is still 80.4 mAh g(-1), with the capacity retention of about 86%. Our encouraging results may boost further studies of SIBs device by smart engineering of the electrode materials. (C) 2021 Elsevier B.V. All rights reserved.