Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/163068
Title: Sodium ion storage in Na₄MnV(PO₄)₃@C free-standing electrode
Authors: Hu, Ping
Zhu, Ting
Cai, Congcong
Mai, Bo
Yang, Chen
Ma, Jianmin
Zhou, Liang
Fan, Hong Jin
Mai, Liqiang
Keywords: Science::Physics
Issue Date: 2022
Source: Hu, P., Zhu, T., Cai, C., Mai, B., Yang, C., Ma, J., Zhou, L., Fan, H. J. & Mai, L. (2022). Sodium ion storage in Na₄MnV(PO₄)₃@C free-standing electrode. Advanced Functional Materials. https://dx.doi.org/10.1002/adfm.202208051
Journal: Advanced Functional Materials 
Abstract: To enhance the energy density of batteries and explore intrinsic charge storage mechanism of the active materials, it is important to reduce or eliminate the use of non-active materials in electrodes, such as binder and conductive additives. Herein, free-standing Na4MnV(PO4)3@C (F-NMVP@C) fiber membrane is fabricated and directly used as a sodium-ion battery (SIB) cathode. In situ X-ray diffraction reveals that the V3+/V4+ redox reaction occurs through a solid-solution reaction while a two-phase Mn2+/Mn3+ redox reaction is identified, and both are highly reversible. Meanwhile, ex situ electrochemical impedance spectroscopy reveals that both the ion diffusion coefficient and charge transfer resistance of F-NMVP@C change reversibly during the Na+ intercalation/de-intercalation. Battery full cells are assembled based on the free-standing F-NMVP@C cathodes and F-Sb@C anodes, which manifests a high energy density (293 Wh kg−1) and good cyclability (87.5% after 100 cycles at 1 C). The high-performance free-standing cathodes and anodes shed light on the development of flexible SIBs.
URI: https://hdl.handle.net/10356/163068
ISSN: 1616-301X
DOI: 10.1002/adfm.202208051
Rights: © 2022 Wiley-VCH GmbH. All rights reserved. This is the peer reviewed version of the following article: Hu, P., Zhu, T., Cai, C., Mai, B., Yang, C., Ma, J., Zhou, L., Fan, H. J. & Mai, L. (2022). Sodium ion storage in Na₄MnV(PO₄)₃@C free-standing electrode. Advanced Functional Materials, which has been published in final form at https://doi.org/10.1002/adfm.202208051. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Fulltext Permission: embargo_20231024
Fulltext Availability: With Fulltext
Appears in Collections:SPMS Journal Articles

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