Vertically constructed monolithic electrodes for sodium ion batteries: Toward low tortuosity and high energy density

Ping Li, Yanan Wang, Jong Yeob Jeong, Xiaoming Gao, Kan Zhang, Anne Neville, Shusheng Xu, Jong Hyeok Park

Research output: Contribution to journalArticle

Abstract

Nanomaterials for battery applications are strongly appealing to the industrial community, yet conventional electrode fabrication by employing a slurry paste restricts the potential performances of nanoengineered materials, particularly with commercial-level thickness and high mass loading. Here, physical vapor deposition (PVD) prepared monolithic electrodes composed of 40 μm-thick anisotropic WS2 vertical arrays on Al foil with a mass loading of 17.5 mg cm-2, and several sparsely inserted nanometre-thick carbon layers are reported. The monolithic anode shows an ultra-fast Na-ion diffusivity of 2.05 × 10-10 cm2 s-1, which is two orders of magnitude faster than that of the anode prepared from a slurry paste. As a sodium-ion battery (SIB) anode, the monolithic electrode achieves prominent areal and volumetric capacities of 5.57 mA h cm-2 and 1.39 A h cm-3, respectively, at a current density of 100 mA g-1 with less than 20% decay during 300 cycles. Furthermore, a SIB full cell composed of the monolithic anode and a Na2V3(PO4)3/C cathode can provide a reversible capacity around 125 mA h g-1 at 2C with an output voltage of 1.77 V, which demonstrates its potential for further development.

Original languageEnglish
Pages (from-to)25985-25992
Number of pages8
JournalJournal of Materials Chemistry A
Volume7
Issue number45
DOIs
Publication statusPublished - 2019 Jan 1

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Anodes
Sodium
Ions
Electrodes
Ointments
Physical vapor deposition
Nanostructured materials
Metal foil
Cathodes
Current density
Carbon
Fabrication
Electric potential

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

Li, Ping ; Wang, Yanan ; Jeong, Jong Yeob ; Gao, Xiaoming ; Zhang, Kan ; Neville, Anne ; Xu, Shusheng ; Park, Jong Hyeok. / Vertically constructed monolithic electrodes for sodium ion batteries : Toward low tortuosity and high energy density. In: Journal of Materials Chemistry A. 2019 ; Vol. 7, No. 45. pp. 25985-25992.
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Vertically constructed monolithic electrodes for sodium ion batteries : Toward low tortuosity and high energy density. / Li, Ping; Wang, Yanan; Jeong, Jong Yeob; Gao, Xiaoming; Zhang, Kan; Neville, Anne; Xu, Shusheng; Park, Jong Hyeok.

In: Journal of Materials Chemistry A, Vol. 7, No. 45, 01.01.2019, p. 25985-25992.

Research output: Contribution to journalArticle

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AU - Neville, Anne

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AU - Park, Jong Hyeok

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