CAS OpenIR  > 中科院上海应用物理研究所2011-2019年
BiFeO3 as Electrode Material for Lithium Batteries
Luo Shihai; Gao Mei(郭威); Chen Jun; Xing Xianran; Li Zhong(黎忠); Zhou Xingtai(周兴泰); Wen Wen
2011
Source PublicationJOURNAL OF NEW MATERIALS FOR ELECTROCHEMICAL SYSTEMS
ISSN1480-2422
Volume14Issue:3Pages:141
AbstractBiFeO3 was studied as electrode material for lithium battery applications. The voltage profile of BiFeO3 vs Li battery displays three discharge plateaus around 1.3, 0.7 and 0.4 V (vs Li/Li+) and the first discharge capacity is about 1000 mAh/g, with a cutoff voltage of 0.05 V. If the cutoff voltage is limited to 0.7 V, much better capacity retention is achieved The structural changes of BiFeO3 during electro-chemical cycling process were investigated using synchrotron-based in situ XRD and XANES Lithium ions were inserted into BiFeO3 during the discharge process. The whiteline of Bi L-III-edge XANES spectra gradually decreased during the discharge process with their L-III, edge position concomitantly shifted towards lower energy position. However, the Fe K-edge XANES spectrum of the fully discharged product is similar to that of the pristine one and displays no shifts. This indicates that Bi ions are responsible for charge transfer during the electrochemical cycling process. The reduction of Bi3+ to Bi-0 as the gradual insertion of Li ions, is a three-step reduction process. Li2Bi alloy formation was observed at the end of the discharge process, which is not fully reversible towards lithium intercalation/extraction and decomposes to metallic Bi.
Indexed BySCI
Language英语
Funding Project应物所项目组
WOS IDWOS:000293726700001
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/9464
Collection中科院上海应用物理研究所2011-2019年
Recommended Citation
GB/T 7714
Luo Shihai,Gao Mei,Chen Jun,et al. BiFeO3 as Electrode Material for Lithium Batteries[J]. JOURNAL OF NEW MATERIALS FOR ELECTROCHEMICAL SYSTEMS,2011,14(3):141.
APA Luo Shihai.,Gao Mei.,Chen Jun.,Xing Xianran.,Li Zhong.,...&Wen Wen.(2011).BiFeO3 as Electrode Material for Lithium Batteries.JOURNAL OF NEW MATERIALS FOR ELECTROCHEMICAL SYSTEMS,14(3),141.
MLA Luo Shihai,et al."BiFeO3 as Electrode Material for Lithium Batteries".JOURNAL OF NEW MATERIALS FOR ELECTROCHEMICAL SYSTEMS 14.3(2011):141.
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