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Metal Phosphides Embedded with In Situ-Formed Metal Phosphate Impurities as Buffer Materials for High-Performance Potassium-Ion Batteries
Ji, S.P.; Song, C.Y.; Li, J.F.; Hui, K.S.; Deng, W.J.; Wang, S.; Li, H.; Dinh, D.A.; Fan, X.; Wu, S.X.; Zhang, J.T.; Chen, F.M.; Shao, Z.P.; Hui, K. N.
2021-09-01
Source PublicationAdvanced Energy Materials
ISSN1614-6832
Pages2101413(1)-2101413(11)
Abstract

As anodes for metal-ion batteries, metal phosphides usually suffer from severe capacity degradation because of their huge volume expansion and unstable solid electrolyte interphase (SEI), especially for potassium-ion batteries (PIBs). To address these issues, this study proposes amorphous phosphates acting as buffer materials. Ten types of metal phosphide composites embedded with in situ-formed amorphous phosphates are prepared by one-step ball milling using red phosphorus (RP) and the corresponding metal oxides (MOs) as starting materials. A zinc phosphide composite is selected for further study as a PIB anode. Benefitting from the effective suppression of volume variation, a KF-rich SEI is formed on the electrode surface in the KFSI-based electrolyte. The zinc phosphide composite exhibits a high reversible specific capacity and outstanding long-term cycling stability (476 mAh g−1 over 350 cycles at 0.1 A g−1 after going through a rate capability test and 177 mAh g−1 after 6000 cycles at 1.0 A g−1) and thus achieves the best cycling performance among all reported metal phosphide-based anodes for PIBs. This study highlights a low-cost and effective strategy to guide the development of metal phosphides as high-performance anodes for PIBs.

KeywordMetal Phosphide Anode Amorphous Phosphates Buffer Volume Expansion Sei Pibs
DOI10.1002/aenm.202101413
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaChemistry ; Energy & Fuels ; Materials Science ; Physics
WOS SubjectChemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000695818200001
The Source to ArticlePB_Publication
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Cited Times [WOS]:10   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorHui, K.S.; Shao, Z.P.; Hui, K. N.
Recommended Citation
GB/T 7714
Ji, S.P.,Song, C.Y.,Li, J.F.,et al. Metal Phosphides Embedded with In Situ-Formed Metal Phosphate Impurities as Buffer Materials for High-Performance Potassium-Ion Batteries[J]. Advanced Energy Materials,2021:2101413(1)-2101413(11).
APA Ji, S.P.,Song, C.Y.,Li, J.F.,Hui, K.S.,Deng, W.J.,Wang, S.,Li, H.,Dinh, D.A.,Fan, X.,Wu, S.X.,Zhang, J.T.,Chen, F.M.,Shao, Z.P.,&Hui, K. N..(2021).Metal Phosphides Embedded with In Situ-Formed Metal Phosphate Impurities as Buffer Materials for High-Performance Potassium-Ion Batteries.Advanced Energy Materials,2101413(1)-2101413(11).
MLA Ji, S.P.,et al."Metal Phosphides Embedded with In Situ-Formed Metal Phosphate Impurities as Buffer Materials for High-Performance Potassium-Ion Batteries".Advanced Energy Materials (2021):2101413(1)-2101413(11).
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