A study on the interfacial stability of the cathode/polycarbonate interface: implication of overcharge and transition metal redox
文献类型：期刊论文
| 作者 | Li, Jiedong1,2; Dong, Shanmu2; Wang, Chen2; Hu, Zhenglin2; Zhang, Zhongyi1; Zhang, Hui1; Cui, Guanglei2
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| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
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| 出版日期 | 2018-07-07 |
| 卷号 | 6期号:25页码:11846-11852 |
| ISSN号 | 2050-7488 |
| DOI | 10.1039/c8ta02975j |
| 英文摘要 | Polycarbonate electrolytes have attracted great interest in recent years due to their high ionic conductivity. However, the cathodic interfacial stability of polycarbonate electrolytes has yet to be explored. Herein, we reported an unusual reverse cation-redox reaction in which Fe3+ was reduced to Fe2+ by poly(propylene carbonate) (PPC) at the interface of a LiFePO4/PPC based solid polymer electrolyte during the first charge process at low current density. The XPS and in situ XRD results indicate the simultaneous existence of LiFePO4 (Fe2+) and FePO4 (Fe3+) in the overcharge process. Besides, the DEMS result indicates that CO2 could originate from the oxidation decomposition of PPC at the cathode surface. During this reaction, the oxidation of the polymer, rather than transition metal ions, serves as the source for charge compensation, leading to a significant overcharge issue. Furthermore, we found that the appearance of LiF on the cathode electrolyte interphase (CEI), tested by XPS, can stabilize the LFP/PPC interface. Consequently, a LiF layer is fabricated on the PPC-SPE surface, which significantly limits the overcharge issues. |
| WOS关键词 | LITHIUM-ION BATTERIES ; ELECTROCHEMICAL MASS-SPECTROMETRY ; SOLID POLYMER ELECTROLYTES ; IN-SITU ; SUPERIONIC CONDUCTOR ; LI-BATTERIES ; STATE ; CHALLENGES ; LIFEPO4 ; SPECTROSCOPY |
| 资助项目 | National Science Fund for Distinguished Young Scholars[51625204] ; National Science Fund[51625204] ; Key Research and Development Plan of Shandong Province P. R. China[2017GGX40119] ; National Natural Science Foundation of China[51703236] ; Youth Innovation Promotion Association of CAS[2016193] ; China Postdoctoral Science Foundation[2017M612366] |
| WOS研究方向 | Chemistry ; Energy & Fuels ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000436516700027 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 资助机构 | National Science Fund for Distinguished Young Scholars ; National Science Fund ; Key Research and Development Plan of Shandong Province P. R. China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association of CAS ; China Postdoctoral Science Foundation |
| 源URL | [http://ir.qibebt.ac.cn/handle/337004/12334]  |
| 专题 | 中国科学院青岛生物能源与过程研究所 |
| 通讯作者 | Dong, Shanmu; Zhang, Hui; Cui, Guanglei |
| 作者单位 | 1.Qingdao Univ, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Jiedong,Dong, Shanmu,Wang, Chen,et al. A study on the interfacial stability of the cathode/polycarbonate interface: implication of overcharge and transition metal redox[J]. JOURNAL OF MATERIALS CHEMISTRY A,2018,6(25):11846-11852. |
| APA | Li, Jiedong.,Dong, Shanmu.,Wang, Chen.,Hu, Zhenglin.,Zhang, Zhongyi.,...&Cui, Guanglei.(2018).A study on the interfacial stability of the cathode/polycarbonate interface: implication of overcharge and transition metal redox.JOURNAL OF MATERIALS CHEMISTRY A,6(25),11846-11852. |
| MLA | Li, Jiedong,et al."A study on the interfacial stability of the cathode/polycarbonate interface: implication of overcharge and transition metal redox".JOURNAL OF MATERIALS CHEMISTRY A 6.25(2018):11846-11852. |
入库方式： OAI收割
来源：青岛生物能源与过程研究所
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