Facilely solving cathode/electrolyte interfacial issue for high-voltage lithium ion batteries by constructing an effective solid electrolyte interface film
文献类型：期刊论文
| 作者 | Xu, JJ(许晶晶); Xia, QB(肖清波); Chen, FY; Liu, T; Li, L; Cheng, XY(程雪原); Lu, W(卢威); Wu, XD(吴晓东) |
| 刊名 | ELECTROCHIMICA ACTA
 |
| 出版日期 | 2016 |
| 卷号 | 191 |
| 通讯作者 | Wu, XD(吴晓东) |
| 英文摘要 | The cathode/electrolyte interface stability is the key factor for the cyclic performance and the safety performance of lithium ion batteries. Suppression of consuming key elements in the electrode materials is essential in this concern. In this purpose, we investigate a facile strategy to solve interfacial issue for high-voltage lithium ion batteries by adding an oxidable fluorinated phosphate, Bis(2,2,2-trifluoroethyl) Phosphite (BTFEP), as a sacrificial additive in electrolyte. We demonstrate that BTFEP additive could be oxidized at slightly above 4.28 V which is a relatively lower voltage than that of solvents, and the oxidative products facilitate in-situ forming a stable solid electrolyte interphase (SEI) film on the cathode surface. The results manifest the SEI film validly restrains the generation of HF and the interfacial side reaction between high-voltage charged LiNi0.5Mn1.5O4 (LNMO) and electrolyte, hence, the dissolution of Mn and Ni is effectively suppressed. Finally, the cyclic performance of LNMO after 200 cycles was remarkably improved from 68.4% in blank electrolyte to 95% in 1 wt% BTFEP-adding electrolyte. (C) 2016 Elsevier Ltd. All rights reserved. |
| 关键词[WOS] | ELECTROCHEMICAL PERFORMANCE ; VINYLENE CARBONATE ; CATHODE MATERIAL ; LINI0.5MN1.5O4 CATHODES ; SURFACE ; SPINEL ; STABILITY ; LIMN1.5NI0.5O4 ; IMPROVEMENT ; INTERPHASE |
| 收录类别 | SCI ; EI |
| 语种 | 英语 |
| WOS记录号 | WOS:000371143200079 |
| 源URL | [http://ir.sinano.ac.cn/handle/332007/4618]  |
| 专题 | 苏州纳米技术与纳米仿生研究所_纳米研究国际实验室_吴晓东团队 |
| 推荐引用方式 GB/T 7714 | Xu, JJ,Xia, QB,Chen, FY,et al. Facilely solving cathode/electrolyte interfacial issue for high-voltage lithium ion batteries by constructing an effective solid electrolyte interface film[J]. ELECTROCHIMICA ACTA,2016,191. |
| APA | Xu, JJ.,Xia, QB.,Chen, FY.,Liu, T.,Li, L.,...&Wu, XD.(2016).Facilely solving cathode/electrolyte interfacial issue for high-voltage lithium ion batteries by constructing an effective solid electrolyte interface film.ELECTROCHIMICA ACTA,191. |
| MLA | Xu, JJ,et al."Facilely solving cathode/electrolyte interfacial issue for high-voltage lithium ion batteries by constructing an effective solid electrolyte interface film".ELECTROCHIMICA ACTA 191(2016). |
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