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克酮酸衍生物类锂硼盐系列锂离子电解质合成和性能地研究.pdf
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摘要摘要研究比较早的锂电池用无机锂盐如LiCl04、LiAsF6、LiBF4,虽然在化学和电化学性质方面显示出比较好的优越性,但也因其本身的一些缺陷导致了它们在实际应用中有一定的障碍,LiPF6虽然是已实现商品化的一种锂盐,但它的热稳定性较差,在溶液中很容易产生HF腐蚀性气体,造成可能的安全隐患。自从有机锂盐问世以来,它一直受到研究工作者的广泛关注。本文着重介绍了三种电解质锂盐的设计合成以及各种电化学性能的研究。论文共分为以下四章: 第一章、阅读调研大量的文献,充分了解锂离子电池的发展历史和最新研究进展,以及介绍电池的各个组成部分。第二章、设计并合成新电解质硼锂盐:1,2,3.三(二***基亚***).4.环戊烯.4,5. 二醇与L--酸螯合硼酸锂盐、1,2,3.三(二***基亚***).4.环戊烯.4,5.二醇与邻苯二酚螯合硼酸锂盐、双1,2,3.三(二***基亚***).4.环戊烯.4,5.二醇螯合硼酸锂盐。同时通过红外、核磁等方法检测三种锂盐的结构;通过元素分析测定配体中C、H、O、N的百分含量;利用XSP IntrepidII电感耦合离子体发射光谱仪测定液体电解质中锂、硼元素的含量来确定锂盐的成功合成。第三章、对新锂盐的热稳定性、溶解度、电导率以及氧化电位进行测试, 以获得新锂盐在热力学与电化学方面的性能。第四章、对此次研究所取得的成果进行总结,以及对此次的研究所存在的不足之处进行简单的综述,并对未来的可能研究方向进行展望。总之,本文成功的合成了三种新的有机硼锂盐,并对它们的各种性能进行测试,测试结果表明新合成的物质基本符合商用锂盐的要求。关键词:锂盐电解质电化学电导率万方数据 Abstract Ab stract Previous studies have showed anic lithium saltssuch as LiCl04、 LiAsF6、LiBF4 exhibited good superiority in chemical and electrochemical properties.But some ofits own defects have led tosome obstacle intheirpractical application.Although LiPF6 has mercialization as alithium salt,but its thermal stability ispoor.It isalsoeasy toproduce HF corrosive gas insolution, which may cause potential security risk.Since theperformance anic lithium salts,they have been widely concerned by researchers. The paper emphatically introduced thatthreekinds ofelectrolyteslithium salts were Designed andsynthesized.Their various electrochemicalperformances were tested. Thispaper isdivided intofourchapters as follows: The firstchapter,it isfully understood about thehistoryanddevelopment of lithium-ion batteries from alotofliterature.ponent ofthebattery Was introduced. The second chapter,new lithium saltshave been designed and synthesized:e.g. 1ithium bis[1,2,3-tris(dicyanomethylene)一4一cyclopentene-4,5一diol(2-)-O,O]borate, lithium[1,2,3-tris(dicyanomethylene)一4一cyclopentene一4,5一diol(2-)-O,Ooxalato]borate, lithium[1,2,3-tris(dicyanomethylene)-4一cyclopentene-4,5-diol(2一)一O,O 1,2-benzenedi olato]borate.Simultaneously,structure ofthreelithium saltswere detected by IR, NMR and other methods.It Was measured ofthepercentage ofligand C,H,O,N by elemental analysis.Using XSP Intrepid IIinductively coupled plasma emission spectrometer measured theliquidelectrolyte,lithium and boron contents oflithium salts. The third chapter,the thermalstability,solubility,conductivity and oxidation potential ofnew lithium saltshad been testedinorder toobtain theperformance of new lithium saltsinthermodynamic and electrochemical aspects. The fourth chapter,the results ofthe research were summarized,and the ings oftheresearch were simply summarized.As wellas thepossible future 万方数据 Abstract research direction was forecasted. In summary,three anic boron lithium salts were synthesized essfully inthispaper and their various properties had been tested.The test resultsshowed thatthenewly synthesized substances were basically accord forthe requirements mercial lithium salts. Keywords:lithium salts,electrolyte,electrochemical,conduc 内容来自淘豆网www.taodocs.com转载请标明出处.
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