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Reducing the Charge Carrier Transport Barrier in Functionally Layer-Graded Electrodes
Zhang Y.2; Malyi O.I.2; Tang Y.2; Wei J.2; Zhu Z.2; Xia H.2; Li W.2; Guo J.2; Zhou X.2; Chen Z.2; Persson C.1; Chen X.2
2017-11-20
Source PublicationAngewandte Chemie - International Edition
ISSN15213773 14337851
Volume56Issue:47Pages:14847-14852
AbstractLithium-ion batteries (LIBs) are primary energy storage devices to power consumer electronics and electric vehicles, but their capacity is dramatically decreased at ultrahigh charging/discharging rates. This mainly originates from a high Li-ion/electron transport barrier within a traditional electrode, resulting in reaction polarization issues. To address this limitation, a functionally layer-graded electrode was designed and fabricated to decrease the charge carrier transport barrier within the electrode. As a proof-of-concept, functionally layer-graded electrodes composing of TiO (B) and reduced graphene oxide (RGO) exhibit a remarkable capacity of 128 mAh g at a high charging/discharging rate of 20 C (6.7 A g ), which is much higher than that of a traditionally homogeneous electrode (74 mAh g ) with the same composition. This is evidenced by the improvement of effective Li ion diffusivity as well as electronic conductivity in the functionally layer-graded electrodes.
Keywordcharge carrier barrier functionally graded electrodes high charging rates lithium-ion batteries TiO 2 (B)
DOI10.1002/anie.201707883
URLView the original
Language英語
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Document TypeJournal article
CollectionUniversity of Macau
Affiliation1.Universitetet i Oslo
2.Nanyang Technological University
Recommended Citation
GB/T 7714
Zhang Y.,Malyi O.I.,Tang Y.,et al. Reducing the Charge Carrier Transport Barrier in Functionally Layer-Graded Electrodes[J]. Angewandte Chemie - International Edition,2017,56(47):14847-14852.
APA Zhang Y..,Malyi O.I..,Tang Y..,Wei J..,Zhu Z..,...&Chen X..(2017).Reducing the Charge Carrier Transport Barrier in Functionally Layer-Graded Electrodes.Angewandte Chemie - International Edition,56(47),14847-14852.
MLA Zhang Y.,et al."Reducing the Charge Carrier Transport Barrier in Functionally Layer-Graded Electrodes".Angewandte Chemie - International Edition 56.47(2017):14847-14852.
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