Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/156714
Title: NaTi₂(PO₄)₃ hollow nanoparticles encapsulated in carbon nanofibers as novel anodes for flexible aqueous rechargeable sodium-ion batteries
Authors: He, Bing
Yin, Kuibo
Gong, Wenbin
Xiong, Yuwei
Zhang, Qichong
Yang, Jiao
Wang, Zhixun
Wang, Zhe
Chen, Mengxiao
Man, Ping
Coquet, Philippe
Yao, Yagang
Sun, Litao
Wei, Lei
Keywords: Science::Chemistry
Engineering::Electrical and electronic engineering
Issue Date: 2021
Source: He, B., Yin, K., Gong, W., Xiong, Y., Zhang, Q., Yang, J., Wang, Z., Wang, Z., Chen, M., Man, P., Coquet, P., Yao, Y., Sun, L. & Wei, L. (2021). NaTi₂(PO₄)₃ hollow nanoparticles encapsulated in carbon nanofibers as novel anodes for flexible aqueous rechargeable sodium-ion batteries. Nano Energy, 82, 105764-. https://dx.doi.org/10.1016/j.nanoen.2021.105764
Project: MOE2019-T2-2-127 
T2EP50120- 0005 
A2083c0062 
RG90/19 
RG73/19 
NRF-CRP18-2017-02 
Journal: Nano Energy 
Abstract: NASICON-structured NaTi2(PO4)3 (NTP) is an attractive anode material for aqueous rechargeable sodium-ion batteries (ARSIBs) thanks to its three-dimensional open framework and appropriate negative voltage window. Nevertheless, the lack of flexible and high-performance binder-free NTP-based anodes remains stumbling blocks to the development of wearable ARSIBs. Herein, hollow-structure NTP evenly encapsulated in cross-linked porous N-doped carbon nanofiber (HNTP@PNC) is prepared through electrospinning technology and subsequent carbonization treatment, directly acting as binder-free anode for flexible ARSIBs. Benefiting from its unique hollow structure, continuous conductive network and favorable synergistic effect, the HNTP@PNC electrode displays as high as of 108.3 mAh g−1 rate capacity at 5.50 A g−1 and an impressive cycling stability of 97.2% capacity retention after 3000 cycles. Further, theoretical calculations reveal that NTP with NC coating significantly enhances electronic conductivity and accelerates Na+ diffusion kinetics. Pairing with potassium zinc hexacyanoferrate free-standing cathode, a prototype quasi-solid-state ARSIB with a high-voltage discharge plateau of 1.6 V is successfully constructed, achieving a high volumetric capacity of 24.5 mAh cm−3 and an admirable energy density of 39.2 mWh cm−3, outperforming most reported flexible aqueous rechargeable energy-storage devices. These exciting results provide valuable intuition into the design of novel binder-free NTP-based anodes for next-generation wearable ARSIBs.
URI: https://hdl.handle.net/10356/156714
ISSN: 2211-2855
DOI: 10.1016/j.nanoen.2021.105764
DOI (Related Dataset): 10.21979/N9/E2WXNR
Rights: © 2021 Elsevier Ltd. All rights reserved. This paper was published in Nano Energy and is made available with permission of Elsevier Ltd.
Fulltext Permission: embargo_20230507
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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