边锋游戏

低成本高浸润性电解液发展总结与展望
发布时间:2019-03-28 09:41:00
关键词:动力电池锂电池

低成本高浸润性电解液发展总结与展望


锂离子电池在便携式能源以及新能源汽车市场取得了巨大的商业成功。锂电池电解液是电池中离子传输的载体,对于提升锂电池的综合性能有着至关重要的作用。随着新能源产业对于高能量密度电池的需求增高,科研界和产业界开始探索提升电池电压以及电极材料能量密度的新方式。近年来研究出的高浓度电解液可以有效扩宽电解液窗口、提升电池的循环稳定性能、提高能量密度等,在一定程度上为提升锂电池能量密度开创了新的研究方向。但是高浓度电解液存在着高成本、低浸润性等本证问题,制约了高浓度电解液的大规模应用。

CHENGGUOJIANJIE:

JINRI,RIBENDONGJINGDAXUEDEYamadaJIAOSHOUKETIZUZAINature EnergyQIKANSHANGFABIAOLETIWEI“Advances and issues in developing salt concentrated battery electrolytes”DEZONGSHUWENZHANG,WENZHANGDEDIYIZUOZHEWEIYuki YamadaYIJIJianhui Wang。BENWENCONGBUTONGJIAODUDUIGAONONGDUDIANJIEYEDEYOUQUEDIANJINXINGLEZONGHEDEPINGJIA,BINGDUIGAONONGDUDIANJIEYETIXIFAZHANFANGXIANGJINXINGLEZHANWANG。


TUWENDAODU:


TU1 CHANGGUIDIANJIEYEHEGAONONGDUDIANJIEYEZONGHEBIJIAO:(a)NONGDUHELIZICHUANDAOGUANXIQUXIAN,(b)BUTONGNONGDUDIANJIEYESHIPAI,(c)JIYULIYAN、RONGJI、NONGDUDEDIANJIEYESHEJI,(d)HE(e)JISUANCHUDEBUTONGNONGDUDIANJIEYEZHONGDEDIANZIJIEGOU.


边锋游戏TU2 (a)GAONONGDUDIANJIEYEDEYOUYIXINGNENG,(b)JINNIANLAIGAONONGDUDIANJIEYEDEYANJIUJINZHAN


【1. GAONONGDUDIANJIEYEDEYOUYIXINGNENG】

1.1YOUYIDEBEILVXINGNENG:ZAICHUANTONGDERENZHIZHONG,LIZIDIANDAOLVSUIZHEDIANJIEYENONGDUDESHANGSHENGYOUSUOXIAJIANG,JINERDAOZHILILIZIZAIDIANJIEYEYIJIJIEMIANCHUANSHUSHIDEZUKANGZENGJIA,BEILVXINGNENGBEIRENWEIHUIJIAOCHA。SUIZHEDUIYUGAONONGDUDIANJIEYEYANJIUDESHENRU,GAONONGDUDIANJIEYEFANERCHENGXIANCHULEJIAOHAODEBEILVXINGNENG,YANJIUFAXIANGAONONGDUDIANJIEYEZHONGHUIXINGCHENGTESHUDESEIMO。CHUANTONGDIANJIEYEZHONG,SEIMOZHUYAOLAIZIYURONGJIDEFENJIE;ZAIGAONONGDUDIANJIEYEZHONGXINGCHENGDESEIMOZHUYAOLAIZIYUDIANJIEYANDEFENJIE。XINGCHENGDESEIMOHUITISHENGLILIZIZAIJIEMIANDECHUANDAO,JINERTISHENGBEILVXINGNENG。

1.2 GAONENGLIANGMIDU:GAONONGDUDIANJIEYEWANGWANGNENGJIANGDIANHUAXUECHUANGKOUKUOKUAN。ZHUYAOYUANYINZAIYU:(1)DIANJIEYEZHONGZIYOUDERONGJIFENZIDADAJIANSHAOCONGERJIANSHAOLERONGJIYUZHENGJIRONGCHUJINSHULIZIDEFANYING;(2)DUTEDE3DRONGYEJIEGOUZUAIZHENGJIRONGCHUJINSHULIZIDAODADIANJIJIEMIAN。

边锋游戏1.3RONGLIANGBAOCHILVGAO,ZIFANGDIANJIANRUO:GAONONGDUDIANJIEYEZHONGXINGCHENGDESEIGENGJIAWENDING,BURONGYIBEIRONGJIRONGJIE,JIANSHAOLEDIANJIEYEZAIDIANJICAILIAOBIAOMIANDEZIFAFENJIE。

边锋游戏1.4 ANQUANXINGTIGAO:ANQUANXINGSHIXINNENGYUANDIANCHIDAGUIMOYINGYONGZHONGDEZHONGYAOBAOZHANG。CHUANTONGDEYOUJIDIANJIEYEYIRANYIHUIFA,DAOZHILEXINNENGYUANDIANCHIZAISHIJIYINGYONGZHONGCUNZAIXUDUODEANQUANYINHUAN。ZAIGAONONGDUDIANJIEYEZHONG,ANQUANXINGYOUZHEXIANZHUTIGAO:(1)YIRANYIHUIFADECHUANTONGRONGJIKEYIBEISHEQI;(2)DUTEDESEIKEYIYIZHIJIEMIANFUFANYING;(3)RONGJIFENZIHEYANGLIZIZHIJIANDEJIEHEGENGQIANG,JIANSHAOLEDIANJIEYETIXIDEHUIFA。


【2. GAONONGDUDIANJIEYEDEJUXIANHEFAZHANPINGJING】

2.1 GAONONGDUDIANJIEYEDESHIJIYINGYONG。YUCHUANTONGDEXIRONGYEDIANJIEYETIXIXIANGBI,GAONONGDUDIANJIEYEYOUZHEXIANZHUDEYOUSHI,DANSHIGAONONGDUDIANJIEYEDEDAGUIMOSHANGYEHUAYINGYONGRENGRANMIANLINZHETIAOZHAN,GAONONGDUDIANJIEYEJUYOUMINGXIANDEQUEDIAN:GAOZHANDUHEGAOZAOJIA。(1) CHUANTONGDEXIRONGYEDEZHANDUZAISHIWENXIAYUEWEI3 mPa,ZAIDIANCHIHUACHENGZHONG,WANGWANGXUYAO24XIAOSHIYISHANGDEJINGZHISHIJIAN,BAOZHENGDIANJIEYEYUGEMO、DIANJIDECHONGFENJINRUN。GAONONGDUDIANJIEYEWANGWANGJUYOUJIAOGAODEZHANDU,WUYIHUIZENGJIADIANCHIDEJINRUNSHIJIAN。(2) JUGUJI,LIYANZAISHANGYEHUALIDIANCHIDIANJIEYECHENGBENZHONGZHANYOUCHAOGUO70 %DEBIZHONG,ZENGJIADIANJIEYEZHONGLIYANDENONGDUJIANGJIDADIZENGJIADIANJIEYEDECHENGBEN。

2.2 GAONONGDUDIANJIEYETIXIDEJILIYANJIU:GAONONGDUDIANJIEYEZHONGXUDUOXINDEGAINIANHEJILIRENGRANYOUDAIYANJIU(1)GAONONGDUDIANJIEYEZHONGDEXINXINGRONGYEJIEGOUHEDIANZIJIEGOU;(2) GAONONGDUDIANJIEYEZHONGDELIZICHUANSHUJIZHI;(3)GAONONGDUDIANJIEYEZHONGDEDIANJIEYE/DIANJIJIEMIANJIEGOU,SEIDEXINGCHENGJIZHIDENGDENG。


边锋游戏TU3 LIZICHUANDAOJIZHI. (a)BUTONGDIANJIEYEDEWaldenTU,BAOKUOFEISHUIXIDELiFSA/DMC,SHUIXIDELiTFSA/H2OYIJILi(TFSA)0.7(BETA)0.3.H2O.(b)CHUANTONGXIRONGYEDIANJIEYEHEGAONONGDUDIANJIEYEDERONGJIHUAJIEGOU.(c)GAONONGDUDIANJIEYEZHONGDERONGYEJIEGOU.


【3. GAONONGDUDIANJIEYEFAZHANZHANWANG】

3.1 TANSUOXINDEDIANJIEYAN/RONGJITIXI:GAONONGDUDIANJIEYEJUYOUGAODUDEKESHEJIXING,KEYISHEQICHUANTONGDEZHILEIRONGJI,DIANJIEYANHERONGJIDEXIETONGWANGWANGHUIDEYOUYIDEDIANHUAXUEXINGNENG,KEYISHEJI、TANSUOGENGDUODEDIANJIEYAN/RONGJITIXISHIYONGYUGENGGAONENGLIANGMIDUDEJINSHUKONGQIDIANCHI、LILIUDIANCHITIXI,JIEJUECHUANTONGDIANJIEYEZAICILEIGAONENGLIANGMIDUTIXIZHONGDEBUWENDINGWENTI。


边锋游戏TU4 DIJIXINGRONGJIXISHIGAONONGDUDIANJIEYE.(a)SANZHONGLEIXINGDIANJIEYEDERONGYEJIEGOUSHIYITU:XIRONGYE、GAONONGDUYIJIJUBUGAONONGDU. (b)SANZHONGLEIXINGDIANJIEYEXINGNENGDEZONGHEDUIBI.

3.2 “稀释”高浓度电解液:高浓度电解液的高粘度、高造价的缺陷限制其大规模商业化应用,近年来出现了“稀释”高浓度电解液的新概念(图4展示了三种不同类型的电解液溶液结构)。用于“稀释”高浓度电解液的溶剂需要有以下特征:(1) 低粘度;(2)廉价;(3)不改变高浓度电解液独特的溶液结构的同时,能够与高浓度电解液互溶;(4)电化学稳定性,不缩小电化学窗口;(5)阻燃,低挥发性。HFE、TTE等醚类溶剂符合了以上特征而被用于“稀释”高浓度电解液,在不降低高浓度电解液电化学性能的基础上,成功将多种高浓度电解液的粘度和造价降低。HFE的其他衍生物也值得进一步研究。

边锋游戏3.3 DIANCHITIXIKUOZHAN:MUQIANDUIYUGAONONGDUDIANJIEYEDEYANJIUDADUOSHUZHUANZHUYULIDIANCHITIXI,DUIYUGAONONGDUDIANJIEYETIXIDEYANJIUKEYIYANSHENDAOQITADIANCHITIXI(Na+、K+、Mg2+、Al3+DENG)。

3.3 LIZICHUANSHUJIZHIYANJIU:LIZICHUANSHUSHIYINGXIANGDIANCHIBEILVXINGNENGDEZHONGYAOYINSU,GAONONGDUDIANJIEYEZHONGDUTEDERONGYEJIEGOUWUYIHUIDAOZHITEBIEDELIZICHUANSHUJIZHI,MUQIANDUIYULIZICHUANSHUJILIFANGMIANDEYANJIUQUEJIAOWEIQIANQUE。


TU5 GAONONGDUDIANJIEYEZHONGDESEIXINGCHENGGUOCHENGMONI.

边锋游戏3.4 JIEMIANJIEGOUSHEJI:GAONONGDUDIANJIEYEZHONGDESEIZHUYAOSHIDIANJIEYANDEFENJIEXINGCHENGDE,CONGSHIYANHEJISUANMONI(TU5ZHANSHILESEIXINGCHENGGUOCHENGDEJISUANMONIYANJIU)DEJIAODUYANJIUSEIDEXINGCHENGJILI,SHENRULEJIESEIXINGZHIJIQIDUIYUDIANCHITIXIDEYINGXIANG,JINERDUIYUSEIDEJIEGOUHEZUFENJINXINGSHEJIHEGAIZAO,YIQIDADAODUIYUGAONONGDUDIANJIEYETIXIDIANCHIXINGNENGDEGAISHAN。


TU6 DIANJIEYEFENXIDEJISUANMONIFANGFA.(a)SHIYONGYUBUTONGSHIJIANCHIDUHEYUANZISHUMUDEMONIFANGFA. (b)BUTONGJISUANMONIFANGFAKEYIMONIDEDIANJIEYEXINGZHI.


3.5 JISUANFENXIMONISHOUDUAN:TU6ZHANSHILESHIYONGYUBUTONGSHIJIANCHIDUHEYUANZISHUMUDEJISUANFENXIMONIFANGFA,ZAIXIANDAIGAOXINGNENGJISUANJIYIJIDUOCHIDUSHUXUEWULIFANGFADEBANGZHUXIA,KEYICONGLILUNJIAODUDUIYUGAONONGDUDIANJIEYEZHONGCUNZAIDERONGYEJIEGOU、LIZISHUYUN、JIEMIANSEIXINGCHENGDENGJIZHIJINXINGJISUANMONI,JINYIBUZHIDAOSHIYAN,JIASHENDUIYUGAONONGDUDIANJIEYETIXIDESHENRURENSHI。


TU7 SANZHONGLEIXINGDIANJIEYEDEZONGHEXINGNENGBIJIAO.


ZONGJIEYUZHANWANG: 

边锋游戏GAONONGDUDIANJIEYEZHONGDUTEDERONGYEJIEGOUJIANSHAOLEZIYOURONGJIFENZI,YINLIZIYANSHENGDESEIMOBAOHULEDIANJIEYE/DIANJIJIEMIAN,GAONONGDUDIANJIEYEYOUZHEYOUYIDEDIANHUAXUEXINGNENG:FUFANYINGJIANSHAO,GONGZUOWENDUFANWEIKUODA,DIANHUAXUECHUANGKOUTUOKUAN,BEILVXINGNENGTISHENG,WENDINGXINGNENGTISHENGDENG。GAONONGDUDIANJIEYEGAOZHANDU、GAOZAOJIADEQUEXIANXIANZHILEQIGUANGFANDESHANGYEHUAYINGYONG。ZAIWEILAIDEYANJIUZHONG,KEYIJIEZHUJISUANMONIHESHIYANJIEHEDESHOUDUAN,SHEJIXINXINGDE“XISHI”GAONONGDUDIANJIEYETIXIYIJIXUNZHAOXINXINGDEDIANJICAILIAO。

稿件来源: 清新电源
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