Page 182 - 《精细化工》2023年第3期

第 40 卷第 3 期 精 细 化 工 Vol.40, No.3
2 023 年 3 月 FINE CHEMICALS Mar. 2023

有机电化学与工业
焙烧条件对 Na V (PO ) /C 的制备
3
4 3
2
及储锌性能影响

1*
1
1
1
2*
梁勇清 ，许绍龙 ，吕奕菊 ，刘 峥 ，邹品田
（1. 桂林理工大学，广西电磁化学功能重点实验室，广西 桂林 541004；2. 广西桂林锐德检测认证技术
有限公司，广西 桂林 541100）
摘要：采用喷雾干燥法合成了 Na 3 V 2 (PO 4 ) 3 （NVP）前驱体，然后经过高温煅烧得到水系锌离子电池正极复合材
料 Na 3 V 2 (PO 4 ) 3 /C（NVP/C），考察了煅烧温度和煅烧时间对 NVP/C 性能的影响。通过 XRD、SEM 和 BET 对样
品结构和形貌进行了表征，通过循环伏安和充放电测试了样品的电化学性能。结果表明，不同煅烧温度和煅烧
时间制备样品均为纯相的 NVP/C，且并没有改变 NVP/C 的晶体结构；煅烧温度过高或煅烧时间过长会导致晶粒
尺寸增大，性能迅速衰减。NVP/C 制备最佳条件为煅烧温度 700 ℃、煅烧时间 8 h，在该条件下所制备的 NVP/C
（记为 NVP/C-700-8）形貌更为规整，结晶性良好，具有较小的阻抗以及更好的离子扩散能力，进而表现出最
佳的电化学性能。在 0.1 A/g 电流密度下表现出最佳的放电比容量（122.4 mA·h/g）。在 1.0 A/g 电流密度下经过
200 圈循环后放电比容量仍高达 103.9 mA·h/g。
关键词：Na 3 V 2 (PO 4 ) 3 ；锌离子电池；电极材料；电化学性能；有机电化学
中图分类号：TM912；TB333 文献标识码：A 文章编号：1003-5214 (2023) 03-0638-12

Effect of calcination conditions on preparation and zinc
storage performance of Na 3V 2(PO 4) 3/C

1*
1
2*
1
1
LIANG Yongqing , XU Shaolong , LYU Yiju , LIU Zheng , ZOU Pintian
（1. Guangxi Key Laboratory of Electrochemical and Magneto-chemical Functional Materials, Guilin University of
Technology, Guilin 541004, Guangxi, China; 2. Guangxi Guilin RID Testing & Certification, Guilin 541100, Guangxi, China）
Abstract: Cathode composite material Na 3V 2(PO 4) 3/C (NVP/C) in aqueous Zn-ion batteries was
synthesized via high-temperature calcination of precursor Na 3V 2(PO 4) 3 (NVP) prepared by spray drying
method, and the influence of calcination temperature and time on the performance of NVP/C were then
investigated. The structure and morphology of NVP/C were characterized by XRD, SEM and BET, while
the electrochemical activity of samples obtained were analyzed by cyclic voltammetry and charge and
discharge test. The results showed that pure NVP/C were obtained regardless calcination temperature and
time with no difference in its crystal structure as well. However, higher calcination temperature or longer
calcination time could lead to increase in particle size and rapid activity decline. Therefore, calcination
temperature 700 ℃ and calcination time 8 h were determined as the optimal NVP/C preparation conditions,
under which the sample (named as NVP/C-700-8) displayed more regular morphology, good crystallinity,
lower impedance and better ion diffusion ability, thus exhibited the best electrochemical performance with a
discharge specific capacity of 122.4 mA·h/g at 0.1 A/g. Moreover, the discharge specific capacity still
reached 103.9 mA·h/g after 200 cycles at 1.0 A/g.
Key words: Na 3V 2(PO 4) 3; Zn-ion batteries; electrode materials; electrochemical performance; organic
electrochemistry

收稿日期：2022-07-21; 定用日期：2022-08-29; DOI: 10.13550/j.jxhg.20220687
基金项目：广西自然科学基金（2016GXNSFAA380109，2018GXNSFAA294042）
作者简介：梁勇清（1995—），男，硕士生，E-mail：756869892@qq.com。联系人：吕奕菊（1986—），女，副教授，E-mail：league@
glut.edu.cn；邹品田（1984—），男，工程师，E-mail：317030242@qq.com。