| 钠离子电池正极材料Na3V2(PO4)2O2F的控制合成与电化学性能优化 |
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| 引用本文： | 谷振一,郭晋芝,杨洋,吕红艳,赵欣欣,席晓彤,何晓燕,吴兴隆.钠离子电池正极材料Na3V2(PO4)2O2F的控制合成与电化学性能优化[J].无机化学学报,2018,34(9):1641-1648. |
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| 作者姓名： | 谷振一 郭晋芝 杨洋 吕红艳 赵欣欣 席晓彤 何晓燕 吴兴隆 |
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| 作者单位： | 伊犁师范学院化学与环境科学学院;东北师范大学化学学院动力电池国家地方联合工程实验室 |
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| 基金项目： | 国家自然科学基金（No.51602048）和中央高校基本科研业务费专项资金（No.2412017FZ013）资助项目 |
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| 摘 要： | 采用简单的水热合成法制备氟磷酸钒氧钠(Na_3V_2(PO_4)_2O_2F,简写为NVPOF),通过调节水热反应溶液的pH值和反应温度等关键参数,有效调节NVPOF的颗粒尺寸和均匀性,优化其电化学性能。研究结果显示,性能最优的NVPOF的合成条件是:pH值为7.00±0.05,水热反应温度为170℃。在该条件下合成的NVPOF正极材料具有优异的电化学性能,表现为0.1C(1C=130 mA·g~(-1))的倍率下放电比容量可达123.2 mAh·g~(-1),且在20C的高倍率下仍可实现85.9 mAh·g~(-1)的比容量,在1C下循环200圈后其容量保持率为96.2%,表明该材料具有高容量、优异的倍率和循环性能。所制备的NVPOF颗粒为纳米尺度且具有很高的均匀性,可缩短Na~+的传输路径从而缩短其传输时间,且NVPOF晶体结构具有高稳定性,是一类具有高性能的钠离子电池正极材料。
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| 关 键 词： | 钠离子电池正极材料的优化 高性能正极材料 水热合成 Na3V2(PO4)2O2F 钠离子扩散动力学 |
| 收稿时间： | 2018/5/3 0:00:00 |
| 修稿时间： | 2018/6/20 0:00:00 |
Controlled Preparation and Performance Optimization of Na3V2(PO4)2O2F as Cathode Material for Sodium Ion Batteries |
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| GU Zhen-Yi,GUO Jin-Zhi,YANG Yang,L&#; Hong-Yan,ZHAO Xin-Xin,XI Xiao-Tong,HE Xiao-Yan and WU Xing-Long.Controlled Preparation and Performance Optimization of Na3V2(PO4)2O2F as Cathode Material for Sodium Ion Batteries[J].Chinese Journal of Inorganic Chemistry,2018,34(9):1641-1648. |
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| Authors: | GU Zhen-Yi GUO Jin-Zhi YANG Yang L&#; Hong-Yan ZHAO Xin-Xin XI Xiao-Tong HE Xiao-Yan and WU Xing-Long |
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| Institution: | College of Chemistry and Environmental Science, Yili Normal University, Yining, Xinjiang 835000, China;National & Local United Engineering Laboratory for Power Batteries, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China,National & Local United Engineering Laboratory for Power Batteries, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China,National & Local United Engineering Laboratory for Power Batteries, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China,National & Local United Engineering Laboratory for Power Batteries, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China,National & Local United Engineering Laboratory for Power Batteries, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China,National & Local United Engineering Laboratory for Power Batteries, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China,College of Chemistry and Environmental Science, Yili Normal University, Yining, Xinjiang 835000, China and National & Local United Engineering Laboratory for Power Batteries, Faculty of Chemistry, Northeast Normal University, Changchun 130024, China |
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| Abstract: | |
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| Keywords: | optimization of sodium ion battery cathode materials high-performance cathode material hydrothermal preparation method Na3V2(PO4)2O2F Na+ diffusion kinetics |
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