KMS Qingdao Institute of Biomass Energy and Bioprocess Technology ,CAS
| A study on the interfacial stability of the cathode/polycarbonate interface: implication of overcharge and transition metal redox | |
Li, Jiedong1,2; Dong, Shanmu2; Wang, Chen2; Hu, Zhenglin2; Zhang, Zhongyi1; Zhang, Hui1; Cui, Guanglei2
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| 2018-07-07 | |
| Source Publication | JOURNAL OF MATERIALS CHEMISTRY A
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| ISSN | 2050-7488 |
| Volume | 6Issue:25Pages:11846-11852 |
| Abstract | 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. |
| DOI | 10.1039/c8ta02975j |
| WOS Keyword | LITHIUM-ION BATTERIES ; ELECTROCHEMICAL MASS-SPECTROMETRY ; SOLID POLYMER ELECTROLYTES ; IN-SITU ; SUPERIONIC CONDUCTOR ; LI-BATTERIES ; STATE ; CHALLENGES ; LIFEPO4 ; SPECTROSCOPY |
| Language | 英语 |
| Funding Project | 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 Research Area | Chemistry ; Energy & Fuels ; Materials Science |
| Funding Organization | 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 |
| WOS Subject | Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary |
| WOS ID | WOS:000436516700027 |
| Publisher | ROYAL SOC CHEMISTRY |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.qibebt.ac.cn/handle/337004/12335 |
| Collection | 中国科学院青岛生物能源与过程研究所 |
| Corresponding Author | Dong, Shanmu; Zhang, Hui; Cui, Guanglei |
| Affiliation | 1.Qingdao Univ, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China |
| Recommended Citation 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. |
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