期刊文献+

两步法合成锂离子电池用双草酸硼酸锂 被引量:1

Synthesizing lithium bis( oxalate) borate for Li-ion battery via two-step method
下载PDF
导出
摘要 以草酸、硼酸和氢氧化锂为原料,采用两步法合成锂离子电池用电解质锂盐双草酸硼酸锂(LiBOB)。通过正交实验确定双草酸硼酸酯(HBOB)的最佳合成条件为:n(草酸)∶n(硼酸)=2.2∶1.0,反应温度90℃,反应时间4 h。由单因素实验确定合成LiBOB的最佳工艺条件为:n(HBOB)∶n(Li OH)=1.0∶0.6、中和反应温度100℃,中和反应时间4 h。在此条件下,LiBOB的转化率为83.61%。用XRD、红外光谱(FT-IR)、核磁共振碳谱(NMR)13C-NMR、1H-NMR和热重(TG-DTG)测试等对合成样品进行分析。合成的LiBOB纯度较高,且热稳定性较好。在50℃下,使用Li PF6+LiBOB混合电解液的052545型软包装电池以1 C在3.00~4.35 V循环50次,容量衰减率为7.6%,低于使用纯Li PF6电解液的电池。 Lithium electrolyte salts double oxalate lithium borate (LiBOB) used for Li-ion battery was synthesized via two-step method with oxalic acid, boric acid and lithium hydroxide as raw materials. By orthogonal experiment, the best synthesizing conditions for bisoxalatoborate ester (HBOB) were as follows : n (oxalicacid) : n ( boric acid) = 2. 2: 1.0, reaction temperature 90℃, reaction time 4 h. By single factor experiment,the best synthesis conditions of LiBOB were as follows:n( HBOB):n(LiOH) = 1.0: 0. 6, neutralization reaction temperature 100℃, neutralization reaction time 4 h. The conversion rate of LiBOB was 83.61% under the condition. The synthesized samples were characterized by XRD,infrared spectroscopy( FT-IR), t3C-nuclear magnetic resonance (NMR), 1H-NMR and thermogravimetric(TG-DTG) tests. The synthesized LiBOB had higher purity and better thermal stability. At 50 ℃, after 50 cycles with 1 C in 3. 00 -4. 35 V, the capacity fading rate of 052545 type soft pack battery using LiPF6 + LiBOB mixed electrolyte was 7. 6% ,lower than that of pure LiPF6 electrolyte.
作者 陈姚 杨倩韵 于欣伟 陈胜洲 CHEN Yao YANG Qian-yun YU Xin-wei CHEN Sheng-zhou(School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou, Guangdong 510006, China)
出处 《电池》 CAS CSCD 北大核心 2016年第5期251-254,共4页 Battery Bimonthly
基金 广东省科技计划项目(2013B01405015) 广州市高校科研项目(1201420606) 广州市科技计划项目(20150903005)
关键词 锂离子电池 合成 两步法 电解质 双草酸硼酸锂 Li-ion battery synthesis two-step method electrolyte lithium bis(oxalate) borate
  • 相关文献

参考文献6

二级参考文献9

  • 1薛照明,陈春华.锂离子电池非水电解质锂盐的研究进展[J].化学进展,2005,17(3):399-405. 被引量:19
  • 2He Y B, Li B H, Liu M, et al. Gassing in Li4Ti50l2-based batteries and its remedy[ J]. Scientific Reports,2012,913 ( 12 ) : 1 038 - 1 047. 被引量:1
  • 3Xu K, Zhang S S, Jow T R. Formation of the graphite electrolyte interface by lithium Bis (oxalato) borate [ J]. Electrochem Solid- State Lett,2003,6(6) :All7 -A120. 被引量:1
  • 4Xu K, Lee U, Zhang S S, et al. Graphite electrolyte interface formed in LiBOB based electrolytes [ J]. Electrochem Solid-State Lett,2004,7(9) :A273 - A277. 被引量:1
  • 5WUYu-ping(吴宇平),DAIXiao-bing(戴晓兵),MAJun-qi(马军旗),etal.锂离子电池--应用与实践[M].北京:化学工业出版社,2004.29-30. 被引量:1
  • 6Tr 61tzsch U, Kanoun O,Tr nkler H R. Characterizing aging effects of lithium ion batteries by impedance spectroscopy [ J ]. Electro- chim Acta,2006,51 ( 1 ) :1 664 - 1 672. 被引量:1
  • 7Kida Y, Kinoshita A, Yanagida K, et al. A study on the cycle performance of lithium secondary batteries using lithium nickel- cobalt composite oxide and graphite/coke hybrid carbon [ J ]. Electrochim Acta,2002 ,g7 ( 11 ) : 1 691 - 1 696. 被引量:1
  • 8温兆银.锂二次电池的现状与展望[J].新材料产业,2003(10):45-49. 被引量:13
  • 9倪江锋,周恒辉,陈继涛,苏光耀.锂离子电池中固体电解质界面膜(SEI)研究进展[J].化学进展,2004,16(3):335-342. 被引量:50

共引文献3

同被引文献6

引证文献1

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部