第18卷第4期 2018年8月
材料工程
过程工程学报
The Chinese Jourmal of Process Engineering
Vol.18 No.4 Aug.2018
DOI: 10.12034/j.issn.1009-606X.217403
Highvield synthesisprocessandperformanceofprussianbluecathodematerials forsodiumionbatteries
Liqi SUNi2,Xiaomin YAN'2,Wan TANG'-2,Yushi HEl-2,ZifengMA2,Xiaozhen LIAOl.2
1. School of Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, China 2. Shanghai Electrochemical Energy Devices Research Center, Shanghai 200240, China
Abstract: A high yield preparation method for prussian blue (PB) by using perchlorate precursors was explored. The influence of compositions of the precursor solution, preparation temperature, sodium salt addition and impurities in the final products on the electrochemical properties of final PB products were investigated. The results showed that the existence of impurities lead to a slight decrease of specific capacity. For PB material prepared using FeClz precursor, electrochemical performance of the unwashed sample was obvious inferior to that of the washed sample due to the existence of NaCI impurity. On the other hand, for the PB material prepared by using Fe(CIO4)2 precursor, initial discharge capacity of PB product without being clean washed was slightly lower than being washed but showed better cycling stability due to the existence of small amount of NaClO4 impurity. The unwash synthesis route leads to a high yield of PB product.
Key words: sodium ion batteries; prussian blue; high yield
普鲁士蓝钠离子电池正极材料高收率合成过程及性能孙李琪12，严小敏12，唐婉12，何雨石12，马紫峰12，廖小珍1,2* 1.上海交通大学化学工程系，上海200240
2.上海电化学能源器件工程技术研究中心，上海200240
摘要：用高氯酸盐前躯体制备普鲁士蓝(PB)材料，考察了合成过程中前驱体成分、溶液温度、钠盐添加量及杂质含量对材料性能的影响.结果表明，氯化亚铁作铁源时，不清洗的普鲁士蓝产物中含NaCI杂质，电化学性能明显低于经多次清洗的产物：高氯酸亚铁作铁源时，不清洗直接收集的普鲁士蓝产物初始放电容量略低于清洗产物，但长期循环稳定性更好，免清洗工艺可
明显提高普鲁士蓝材料的收率，少量高氧酸钠杂质存在提高了材料的循环性能。关键词：钠离子电池：普鲁士蓝；高收率
中图分类号：TM912 前言
文献标识码：A
文章编号：1009606X(2018)04-080906
锂同属碱金属，很多性质相似，其离子电池的工作原理也相似，近年来钠离子电池的研究受到较大关注1-7]，但
目前，锂离子电池已广泛应用于新能源汽车和3C 数码产品.随着新能源汽车的快速发展，对锂资源的需求也迅速增加.但锂资源有限且分布不均使锂离子电池成本急剧上升，限制了其在大型储能系统中的应用。钠离子电池采用储量丰富的钠元素，资源优势较大，钠和
钠离子的半径(0.102nm)比锂离子(0.076nm)大，导致很多适用于锂离子电池的电极材料不适用于钠离子电池，因此寻找能为钠离子迁移提供较大离子通道的储钠材料如层状金属氧化物(8]、磷酸盐、氟磷酸盐[9]、普鲁士蓝类材料[10]、硬碳、二氧化钛(]等成为研究热点之一
收稿： 20171129,修回: 20180119,网络发表： 20180607, Received: 20171129,Revised: 20180119, Published online: 20180607 基金项目：国家自热科学基金资助项目(编号：21573147,21336003)：上海市自然科学基金资助项目(编号：15ZR1422300)
作者篇介：孙李琪(1993-)，女，安数省准北市人，硕士研究生，化学工程专业，E-mail:sunliqi@sjtu.edu.cns摩小珍，通讯联系人，E-mail:liaoxzsjta.edu.cn 引用格式：孙车琪，严小敏，唐端，等，誉鲁士蓝销高子电池正极材料高收率合成过程及性能。过程工程学报，2018,18(4)：809-814.
saoosoooodsdee(in Chinese), Chin. J. Process Eng, 2018, 18(4): 809814, DOI: 10.12034/jissn.1009-606X.217403.
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