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yexuqing

新虫 (文学泰斗)

太阳系系主任

ECEPI: 2
应助: 11 (小学生)
金币: 203319
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帖子: 170376
在线: 5207.1小时
虫号: 88288
注册: 2005-08-23
专业: 数论

[交流] 【转帖】锂电池机能性添加剂研究已有7人参与

???C??????????о? 2011/2/22 [ [url=

ocPrint(9181)]?? ?? ?? ?[/url] | ?? ?] ?? ?? ]

??B???|?????????????????????}??????????c???????????z?B???|????????????????}?????????????W??????????????????????????????????????????????????ЙC??????????λ??s??5~5.4 V???????????^?????????δ???l??????λ?????O?????????????LiNi[sub]X[/sub]V[sub]1-X[/sub]O[sub]4[/sub] ~4.8V ??LiNi[sub]X[/sub]Mn[sub]1-X[/sub]O[sub]4[/sub] ~4.7V???????????????????о?????c?????????????????????????λ??????6 V???K????r????????????????
??????SEI??????
1. SEI??γ?C??
?D???е?RA????x???????(Radical Anion)????N?????C?????????????????M?ЙC??I?r?????????Li[sub]2[/sub]CO[sub]3[/sub]?????^????????????????C??II?????t?^??@??????????????????С?????????C??????ī?????ΑB?????????|?????????????ī?????M???????????????|???SEI??????γ??????a?????w?? SEI??γ?????????????????????????????SEI??γ??????????E?M?У???????E??Li[sup]+[/sup]????ī?????γ??^???????@???????????SEI?????????E?cLi[sup]+[/sup]?????r?M?У???????γ?????RCO[sub]3[/sub][sup]-[/sup]????Li[sup]+[/sup]????γ?W??Y??????D????????????????? SEI???

?D??????EC?????????????y?cLi[sup]+[/sup]??e[sup]-???÷???γ?SEI??C??

2. SEI???????
SEI??γ??^???Е??a???S??????????????к???PC???????????SEI????????????SEI??????????λ?^????????????A?????γ??B????????????ī??O???????????????У????????ī???????????????ī?????????a?????w???????????????SEI??γ???W????????????????????????????????????????????D??????????????VC???
??????????
1. ??????????
???????\????????а??????}????????????B??????и?????????S???W????????}????S???Q????????_?????????????????????N?C???(1)?????????^?????γ???????^????????????c?????^?m?????(2)???в???????????????????????a????????M????i?????????σ?N?????C???ǹ??????????????Ч??????ǎ????u??????????????
3. ???W??????y?
?????????M??????????????????????????????跨(2~6 V)????????????W????????????????_?l????·f?o?C?????(ITRI)??????Ч??????????????????????D??????????VC??????????λ?????o???????5.5 V?????5.1 V?????^????ITRI????????????????5.5 V??5.9 V?????????o?CITRI??????Ч???????????λ?·??

?D???????????????W??????y?(Linear Scan Voltage; LSV)

4. ?????????y?
??MCMB/Li ?o????????y?У?????0.05C?????5 mV??????0.05C?????2V?????^???????????????????????????D???????o??????????????????????27 mAh/g??????VC???????????26 mAh/g??????ITRI???????????????22 mAh/g?????????????ITRI??????Ч??????????_18.5%???????ITRI???з???SEI??????????????M??}???x???????????迹???M?????????????????????σ???????c??????????????????
??????~???塢????????????/??????????
????????????I?????s?I290??????????Y??????http://www.materialsnet.com.tw/DocView.aspx?id=9139

[ Last edited by justinzhao on 2011-2-23 at 22:36 ]

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