Development and Investigation of a NASICON-Type High-Voltage Cathode Material for High-Power Sodium-Ion Batteries
Author(s): Chen, MZ (Chen, Mingzhe); Hua, WB (Hua, Weibo); Xiao, J (Xiao, Jin); Cortie, D (Cortie, David); Guo, XD (Guo, Xiaodong); Wang, EH (Wang, Enhui); Gu, QF (Gu, Qinfen); Hu, Z (Hu, Zhe); Indris, S (Indris, Sylvio); Wang, XL (Wang, Xiao-Lin); Chou, SL (Chou, Shu-Lei); Dou, SX (Dou, Shi-Xue)
Source: ANGEWANDTE CHEMIE-INTERNATIONAL EDITION DOI: 10.1002/anie.201912964 Early Access Date: JAN 2020
Abstract: Herein, we introduce a 4.0 V class high-voltage cathode material with a newly recognized sodium superionic conductor (NASICON)-type structure with cubic symmetry (space group P2(1)3), Na3V(PO3)(3)N. We synthesize an N-doped graphene oxide-wrapped Na3V(PO3)(3)N composite with a uniform carbon coating layer, which shows excellent rate performance and outstanding cycling stability. Its air/water stability and all-climate performance were carefully investigated. A near-zero volume change (ca. 0.40 %) was observed for the first time based on in situ synchrotron X-ray diffraction, and the in situ X-ray absorption spectra revealed the V3.2+/V4.2+ redox reaction with high reversibility. Its 3D sodium diffusion pathways were demonstrated with distinctive low energy barriers. Our results indicate that this high-voltage NASICON-type Na3V(PO3)(3)N composite is a competitive cathode material for sodium-ion batteries and will receive more attention and studies in the future.
Accession Number: WOS:000505306000001
PubMed ID: 31657087
Author Web of Science ResearcherID ORCID Number
Hua, Weibo R-9940-2016 0000-0001-5372-4422