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Modification of Zn3V2O8 through Ni-doping for efficient lithium ions storage.
- Source :
- Ionics; Jul2024, Vol. 30 Issue 7, p3941-3950, 10p
- Publication Year :
- 2024
-
Abstract
- Vanadate is expected to be a promising anode material for lithium-ion batteries (LIBs). Herein, a series of Ni doped Zn<subscript>3</subscript>V<subscript>2</subscript>O<subscript>8</subscript> continuous solid solution has been synthesized through a simple sol–gel method. The effects of Ni-doping on the microstructure of Zn<subscript>3</subscript>V<subscript>2</subscript>O<subscript>8</subscript> is systematically investigated. The results show that Ni-doping has almost no influence on the crystalline phase structure and morphology, but has influences on the grain size of the samples. With the increase of Ni-doping amount, the grain size of Ni doped Zn<subscript>3</subscript>V<subscript>2</subscript>O<subscript>8</subscript> gradually increases. Moreover, the conductivity of Ni doped Zn<subscript>3</subscript>V<subscript>2</subscript>O<subscript>8</subscript> is also improved. Ni doped Zn<subscript>3</subscript>V<subscript>2</subscript>O<subscript>8</subscript> has exhibited better electrochemical performance than that of Zn<subscript>3</subscript>V<subscript>2</subscript>O<subscript>8</subscript>. In particular, the sample Zn<subscript>2.4</subscript>Ni<subscript>0.6</subscript>V<subscript>2</subscript>O<subscript>8</subscript> can deliver a capacity of 452.3 mAh g<superscript>−1</superscript> at a current density of 1 A g<superscript>−1</superscript> after 600 cycles. This should be attributed to the decrease of band gap, leading to the improvement of conductivity, which is more conducive to the transport of lithium ions and electrons. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09477047
- Volume :
- 30
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Ionics
- Publication Type :
- Academic Journal
- Accession number :
- 178293924
- Full Text :
- https://doi.org/10.1007/s11581-024-05543-z