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[1]邹义琪,胡 朴*,窦林涛,等.钠离子电池正极材料Na3.5Mn0.5V1.5（PO4）3的制备和电化学性能[J].武汉工程大学学报,2022,44(04):412-416.[doi:10.19843/j.cnki.CN42-1779/TQ.202112007]
　ZOU Yiqi,HU Pu*,DOU Lintao,et al.Preparation and Electrochemical Performance of Na3.5Mn0.5V1.5（PO4）3 as Cathode Material for Sodium-Ion Battery[J].Journal of Wuhan Institute of Technology,2022,44(04):412-416.[doi:10.19843/j.cnki.CN42-1779/TQ.202112007]
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钠离子电池正极材料Na3.5Mn0.5V1.5（PO4）3的制备和电化学性能(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
44
期数:
2022年04期
页码:
412-416
栏目:
材料科学与工程
出版日期:
2022-08-31

文章信息/Info

Title:
Preparation and Electrochemical Performance of Na3.5Mn0.5V1.5（PO4）3 as Cathode Material for Sodium-Ion Battery
文章编号:
1674 - 2869（2022）04 - 0412 - 05
作者:
邹义琪; 胡 朴*; 窦林涛; 张占辉*
武汉工程大学材料科学与工程学院，湖北 武汉 430205
Author(s):
ZOU Yiqi;  HU Pu*;  DOU Lintao;  ZHANG Zhanhui*
School of Materials Science and Engineering，Wuhan Institute of Technology，Wuhan 430205，China
关键词:
Na3.5Mn0.5V1.5（PO4）3; 掺杂; 电化学性能; 正极材料; 钠离子电池
Keywords:
Na3.5Mn0.5V1.5（PO4）3; doping; electrochemical performance; cathode material; sodium ion battery
分类号:
O646
DOI:
10.19843/j.cnki.CN42-1779/TQ.202112007
文献标志码:
A
摘要:
采用溶胶凝胶法制备了新型正极材料Na3.5Mn0.5V1.5（PO4）3（NMVP），探究Mn2+对NMVP组成、结构和电化学性能的影响。X-射线衍射结果表明，其衍射峰与菱方晶型Na3V2（PO4）3（NVP）全部对应，合成出的NMVP为纯相，由于半径更大的Mn2+取代了V3+，晶胞体积增大。NMVP表现出更好的循环稳定性和倍率性能。NMVP在0.2 C和5 C时的比容量分别为101.6、69.5 （mA h）/g，远高于NVP的比容量［0.2 C时93.2 （mA h）/g，5 C时40.2 （mA h）/g）］。循环50圈后，NMVP仍有94.5 （mA h）/g的比容量和93.51%的保持率。Mn2+的掺杂能增强NVP的电化学性能。
Abstract:
A novel cathode material Na3.5Mn0.5V1.5（PO4）3（NMVP）was prepared by sol-gel method. The effects of Mn2+ on the composition，structure and electrochemical properties of the NMVP were investigated. The X-ray diffraction results show that the diffraction peaks can be assigned to rhombic crystalline of Na3V2（PO4）3（NVP），indicating that the pure phase of NMVP is synthesized. The increase of cell volume can be attributed to the V3+ being replaced by larger ionic Mn2+. The NMVP exhibits better cycling stability and rate capability， and delivers higher specific capacities of 101.6 （mA h）/g at 0.2 C and 69.5 （mA h）/g at 5 C，respectively，which is much higher than that of NVP ［93.2 （mA h）/g at 0.2 C and 40.2 （mA h）/g） at 5 C］. After 50 cycles，the NMVP remains specific capacity of 94.5 （mA? h）/g with capacity retention of 93.51%. The Mn2+ doping can improve the electrochemical performance of NVP.

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备注/Memo

备注/Memo:
收稿日期：2021-12-09
基金项目：武汉工程大学第十二届研究生教育创新基金（CX2020144）
作者简介：邹义琪，硕士研究生。E-mail：[email protected]
*通讯作者：胡 朴，博士，特聘教授。E-mail：[email protected]
张占辉，博士，教授。E-mail：[email protected]
引文格式：邹义琪，胡朴，窦林涛，等.钠离子电池正极材料Na3.5Mn0.5V1.5（PO4）3的制备和电化学性能［J］. 武汉工程大学学报，2022，44（4）：412-416.

更新日期/Last Update: 2022-08-25