Please wait a minute...
 首页  期刊简介 期刊订阅 广告合作 联系我们
 
最新录用  |  当期目录  |  过刊浏览  |  热点文章  |  阅读排行
化工新型材料  2019, Vol. 47 Issue (6): 126-130    
  科学研究 本期目录 | 过刊浏览 | 高级检索 |
Mn2+、Ti4+掺杂对Li2FeSiO4/C正极材料电化学性能的影响
刘平, 龚勇, 李琳, 代祖洋, 辜其隆, 程伟, 陈建*
四川理工学院材料科学与工程学院,材料腐蚀与防护四川省重点实验室,自贡643000
Influence of Mn2+ and Ti4+ doping on the electrochemical property of Li2FeSiO4/C
Liu Ping, Gong Yong, Li Lin, Dai Zuyang, Gu Qilong, Cheng Wei, Chen Jian
School of Materials Science and Engineering,Sichuan University of Science & Engineering,Sichuan Province Key Laboratory for Corrosion and Protection of Material,Sichuan University of Science & Engineering,Zigong 643000
下载:  PDF (4216KB) 
输出:  BibTeX | EndNote (RIS)      
摘要 针对锂离子电池正极材料Li2FeSiO4导电率和锂离子扩散率低的缺点,采用溶胶凝胶-微波法合成纳米复合材料硅酸亚铁锂(Li2FeSiO4/C)正极材料。借助X射线衍射、扫描电镜和电化学方法,表征了Mn2+、Ti4+掺杂对Li2FeSiO4结构、微观形貌及电化学性能的影响。结果表明:当Mn2+取代量x=0~0.15时,充放电比容量逐渐增加,x=0.15时,充放比电容量高达172.9mA·h/g(y=0.05,152.1mAh/g);但当Mn2+取代量x=0.20时,充(放)电容量降至118.5mA·h/g(110.9mA·h/g)。Ti4+掺杂优选条件为Li2Fe0.85Mn0.15SiO4测试后发现最终合成较优的LiFe0.80Mn0.15Ti0.05SiO4(y=0.05)首次充(放)电比容量高达178.2mA·h/g(166.7mA·h/g),并且在0.1C倍率下循环20次后容量保持率可达96.4%。
服务
把本文推荐给朋友
加入引用管理器
E-mail Alert
RSS
作者相关文章
刘平
龚勇
李琳
代祖洋
辜其隆
程伟
陈建
关键词:  正极材料  离子掺杂  溶胶凝胶-微波法  电化学性能    
Abstract: The sol-gel method was used to synthesize lithium iron silicate (Li2FeSiO4/C) cathode nanocomposite in order to overcome the shortcomings of Li2FeSiO4 low conductivity and low lithium ion diffusion rate in the lithium ion battery.The structural,morphological and electrochemical properties of Li2FeSiO4/C were characterized by XRD,SEM and electrochemical methods.The results showed that the charge/discharge capacitance increased gradually as increasing the Mn2+ substitution concentration x,and the maximum of charge/discharge capacitance was 172.9mAh/g(152.1mAh/g) at x=0.15.When the Mn2+ substitution amount x=0.20,the charge/discharge capacitance drop to 118.5mAh/g(110.9mAh/g).For Ti2+ doping,the best condition was Li2Fe0.85Mn0.15SiO4.It was found that LiFe0.80Mn0.15Ti0.05TiO4(y=0.05) had the maximum charge/discharge capacitance of 178.2mAh/g(166.7mAh/g),and the capacitance retention rate was 96.4% after 20 cycles of 0.1C magnification.
Key words:  lithium ion battery    codoping    sol-gel method-microwave method    electrochemical performance
收稿日期:  2018-01-26                出版日期:  2019-06-20      发布日期:  2019-07-05      期的出版日期:  2019-06-20
基金资助: 国家自然科学基金面上项目(51572177);四川省科技厅项目(2017JY0158);四川省科技计划项目(2017GZ0121);材料腐蚀与防护四川省重点实验室开放基金(2017CL12);四川理工学院大学生创新创业训练计划项目(CX2017004)
通讯作者:  陈建(1963-),男,教授,主要从事新型碳材料、高分子材料研究。   
作者简介:  刘平(1992-),男,硕士研究生,主要从事化工新型材料研究。
引用本文:    
刘平, 龚勇, 李琳, 代祖洋, 辜其隆, 程伟, 陈建. Mn2+、Ti4+掺杂对Li2FeSiO4/C正极材料电化学性能的影响[J]. 化工新型材料, 2019, 47(6): 126-130.
Liu Ping, Gong Yong, Li Lin, Dai Zuyang, Gu Qilong, Cheng Wei, Chen Jian. Influence of Mn2+ and Ti4+ doping on the electrochemical property of Li2FeSiO4/C. New Chemical Materials, 2019, 47(6): 126-130.
链接本文:  
http://www.hgxx.org/CN/  或          http://www.hgxx.org/CN/Y2019/V47/I6/126
[1] 孙彬.五氧化二钒与硫锂离子电池正极材料及其电化学性能研究[D].湘潭:湘潭大学,2016.
[2] 刑玉涛.碳包覆磷酸铁锂正极材料的制备及其电化学性能研究[D].北京:清华大学,2013.
[3] Larsson P,Ahuja R,Nyt6n A.An ab initio study of the Li-ion battery cathode material Li2FeSiO4[J].Electrochemistry Communications,2006,8(5):797-800.
[4] Nyten A,Abouimrane A,Armand M.Electrochemical performance of Li2FeSiO4 as a new Li-battery cathode material[J].Electrochemistry Communication,2005,7(2):156-160.
[5] Delacourt C,Laffont L,Boucher R,et al.Toward understanding of electrical imitations (electronic,ionic) in LiMPO4(M=Fe,Mn) electrode materials[J].J Electrochem Soc,2005,152(5):A913-A921.
[6] Nyten A,KAmali S,Haggstrom L,et al.The lithium extraction/insertion mechanism in LiFeSiO[J].Journal of Materials Chemistry,2006,16(23):2266-2272.
[7] Dunn B,Kamath H,Tarascon J M.Electrical energy storage for the grid;a battery of choice[J].Science,2011,334(6058):928.
[8] 吴鹏.我国锂电池及其配套产业发展现状与展望[J].中国高新技术企业,2015(35):3-4.
[9] Shiratsuchi T,Okada S,Doi T,et al.Cathodic performance of LiMn1-xMxPO4 (M=Ti,Mg and Zr) annealed in an inert atmosphere[J].Electrochimica Acta,2009,54(11):3145-3151.
[10] Shin H C,Park S B,Jang H,et al.Rate performance and structural change of Cr-doped LiFePO4/C during cycling[J].Electrochim Acta,2008,53(27):7946-7951.
[11] Wang S P,Zhou C G,Zhou Q,et al.Preparation of LiFePO4/C in a reductive atmosphere generated by windward aerobic decomposition of glucose[J].Journal of Power Sources,2011,196(11):5143-5146.
[12] 梁风.孔状纳米级锂离子电池正极材料磷酸铁锂的制备与研究[D].昆明:昆明理工大学,2009.
[13] Song M K,Park S,Alamgir F M,et al.Nanostructured electrodes for lithium ion and lithium-air batteries the latest developments,challenges,and perspectives[J].Materials Science and Engineering R,2011,72(11):220-224.
[14] 燕子鹏,菜舒,周幸,等.正极材料纳米Li2FeSiO4/C的溶胶-凝胶法合成及电化学性能[J].硅酸盐学报,2012,40(5):734-738.
[15] Deng C,Zhang S,Yang S Y.Effect of Mn substitution on the structural,morphological and electrochemical behaviors of Li2Fe1-xMnxSiO4 synthesized via citric acid assisted sol-gel method[J].Journal of Alloys and Compounds,2009,487(1-2):L18-L23.
[16] 胡国荣,曹艳兵,彭忠东,等.微波合成法制备锂离子电池正极材料Li2FeSiO4[J].物理化学学报,2009,25(5):1004-1008.
[17] 闫慧,其鲁,张鼎,等.水热法制备锂离子二次电池用球形Li4Ti5O12负极材料及其电化学性能[J].无机材料学报,2016,31(11):2-3.
[18] 李云松,傅儒生,程璇,等.前驱体固相法制备硅酸铁锂正极材料[J].硅酸盐学报,2011,39(7):1097-1101.
[19] Shenouda A Y,Liu H K.Electrochemical behaviour of tin borophosphate negative electrodes for energy storage system[J].Journal of Power Sources,2008,185(2):1386-1391.
[20] Shenouda A Y,Liu H K.Studies on electrochemical behaviour of zinc-doped LiFePO4 for lithium bettery positive electrode[J].Journal of Alloys and Compounds,2009,477(1-2):498-503.
[21] Han D W,Ryu W H,Kim W K,et al.Effects of Li and Cl codoping on the electrochemical performance and structural stability of LiMn2O4 cathode materials for hybrid electric vehicle applications[J].Journal of Physical Chemistry C,2013,117(10):4913.
[1] 王华丹, 贡纬华, 苏毅, 李国斌. 高压正极材料磷酸镍锂研究进展[J]. 化工新型材料, 2019, 47(7): 13-16.
[2] 辛王鹏, 李艳敬, 周国伟. 石墨烯/TiO2基三元复合材料的制备及应用研究进展[J]. 化工新型材料, 2019, 47(6): 1-6.
[3] 王凯,高超,邢欢,李松恩,雷世文,宋燕. 超纯煤沥青基活性炭的制备及其电化学性能的研究[J]. 化工新型材料, 2019, 47(4): 140-144.
[4] 谢文菊,童海南,张永录. 绿色高容量电池材料高铁酸钡的制备及性能研究[J]. 化工新型材料, 2019, 47(4): 136-139.
[5] 浦旭清,王开松,王佳磊,谢宇,陈介民,沈超,许宁,岳鹿. 硅/石墨烯/碳复合材料的制备及其储锂性能研究[J]. 化工新型材料, 2019, 47(4): 76-80.
[6] 王丽媛, 李建刚, 姚琼, 何向明, 刘才. 高容量富锂三元材料xLi2MnO3·(1-x)LiNi0.6Co0.2Mn0.2O2的制备与性能研究[J]. 化工新型材料, 2019, 47(3): 67-70.
[7] 李鹏,马晓晓,赵理栋. 活性炭纤维的表面改性及其电化学性能研究[J]. 化工新型材料, 2019, 47(3): 143-148.
[8] 李永刚, 冯攀, 俞小花, 俞双林, 徐亚飞, 和晓才, 谢刚. 不同还原剂还原的石墨烯电化学性能研究[J]. 化工新型材料, 2019, 47(1): 92-95.
[9] 刘家伟, 于洪珺, 张玉环, 陈均青, 卑凤利. LiFePO4/CuO/Ag/RGO四元复合材料的制备与电化学性能研究[J]. 化工新型材料, 2018, 46(9): 117-120.
[10] 梁有维, 李世友, 李春雷, 解静, 雷丹. 锂离子电池富锂锰基正极材料的研究进展[J]. 化工新型材料, 2018, 46(8): 46-50.
[11] 张慧莉. 一步法制备Fe2O3/碳纳米管复合材料及其电化学性能研究[J]. 化工新型材料, 2018, 46(7): 148-150.
[12] 解静, 李世友, 李春雷, 耿珊, 李宏亮. 高功率型镍锰酸锂正极材料的研究进展[J]. 化工新型材料, 2018, 46(7): 254-257.
[13] 李春雷, 解莹春, 李祥飞. 磷酸铁锂正极材料的制备及改性研究进展[J]. 化工新型材料, 2018, 46(7): 25-28.
[14] 何强, 闫共芹. 镍铁氧体-碳微纳异质结构的水热法制备及其性能研究进展[J]. 化工新型材料, 2018, 46(6): 53-56.
[15] 何冀川, 杨小龙, 周天明, 喻国强, 刘树信. 煅烧温度对溶胶-凝胶法合成LiNi0.8Co0.15Al0.05O2正极材料物相结构的影响[J]. 化工新型材料, 2018, 46(6): 119-122.
[1] Duan Lingyao, Hou Chaoyi, Chen Chuang, Jia Qiong, Hou Zhenyu. Hydrothermal synthesis and the gas sensing property of ZnO[J]. New Chemical Materials, 2017, 45(9): 184 -185 .
[2] Zhang Shumin, Ren Xuehong, Li Qingfang. Study on antibacterial finishing of PP nonwoven fabric by N-halamine copolymer[J]. New Chemical Materials, 2018, 46(4): 201 -204 .
[3] Zheng Zhen, Ding Chengli, Li Huiping, Fu Jingjing. Synthesis and property of hydrophobic functionalized cotton linter cellulose/SiO2 composite aerogel[J]. New Chemical Materials, 2018, 46(4): 230 -233 .
[4] Zhao Zhenghong, Shuai Changgeng, Yang Xue. Experimental and theoretical study on mechanical relaxation of dielectric elastomer[J]. New Chemical Materials, 2018, 46(12): 175 -177 .
[5] Li Yonggang, Feng Pan, Yu Xiaohua, Yu Shuanglin, Xu Yafei, He Xiaocai, Xie Gang. Electrochemical property of graphene with different reducing agent[J]. New Chemical Materials, 2019, 47(1): 92 -95 .
[6] Mai Huangwang, Yang Wei, Lei Kangzhou, Chen Shengzhou. Iron/carbon microsphere synthesized by hydrothermal method and catalysis for oxygen reduction[J]. New Chemical Materials, 2019, 47(2): 154 -156 .
[7] Yuan Weiye, Zhang Xuelai, Hua Weisan, Han Xingchao, Wang Zhangfei. Influence of different ratio of salt and water on the stable super-cooling of sodium acetate solution[J]. New Chemical Materials, 2019, 47(4): 158 -161 .
[8] Yu Yongjian, Li Ling, Duan Xianfa. Application of hexachlorocyclotriphosphazene derivative in flame retardant of epoxy resin[J]. New Chemical Materials, 2019, 47(4): 230 -234 .
[9] Zhang Huanzhi, Cui Weiwei, Xia Yongpeng, Xu Fen, Sun Lixian. Research progress in preparation and thermal performance of composite PCMs[J]. New Chemical Materials, 2019, 47(6): 35 -38 .
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
京ICP备09035943号-38
版权所有 © 《化工新型材料》编辑部
本系统由北京玛格泰克科技发展有限公司设计开发 技术支持:support@magtech.com.cn