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Vertically aligned MoS 2 nanosheets on monodisperse MXene as electrolyte-philic cathodes for zinc ion batteries with enhanced capacity.
- Source :
-
RSC advances [RSC Adv] 2023 Jun 14; Vol. 13 (26), pp. 17914-17922. Date of Electronic Publication: 2023 Jun 14 (Print Publication: 2023). - Publication Year :
- 2023
-
Abstract
- Zinc ion batteries (ZIBs) have attracted extensive attention for their high safety and environmentally friendly nature, and considerable theoretical capacities. Due to its unique two-dimensional layered structure and high theoretical specific capacities, molybdenum disulfide (MoS <subscript>2</subscript> ) presents as a promising cathode material for ZIBs. Nevertheless, the low electrical conductivity and poor hydrophilicity of MoS <subscript>2</subscript> limits its wide application in ZIBs. In this work, MoS <subscript>2</subscript> /Ti <subscript>3</subscript> C <subscript>2</subscript> T <subscript> x </subscript> composites are effectively constructed using a one-step hydrothermal method, where two-dimensional MoS <subscript>2</subscript> nanosheets are vertically grown on monodisperse Ti <subscript>3</subscript> C <subscript>2</subscript> T <subscript> x </subscript> MXene layers. Contributing to the high ionic conductivity and good hydrophilicity of Ti <subscript>3</subscript> C <subscript>2</subscript> T <subscript> x </subscript> , MoS <subscript>2</subscript> /Ti <subscript>3</subscript> C <subscript>2</subscript> T <subscript> x </subscript> composites possess improved electrolyte-philic and conductive properties, leading to a reduced volume expansion effect of MoS <subscript>2</subscript> and accelerated Zn <superscript>2+</superscript> reaction kinetics. As a result, MoS <subscript>2</subscript> /Ti <subscript>3</subscript> C <subscript>2</subscript> T <subscript> x </subscript> composites exhibit high voltage (1.6 V) and excellent discharge specific capacity of 277.8 mA h g <superscript>-1</superscript> at 0.1 A g <superscript>-1</superscript> , as well as cycle stability as cathode materials for ZIBs. This work provides an effective strategy for developing cathode materials with high specific capacity and stable structure.<br />Competing Interests: There are no conflicts of interest.<br /> (This journal is © The Royal Society of Chemistry.)
Details
- Language :
- English
- ISSN :
- 2046-2069
- Volume :
- 13
- Issue :
- 26
- Database :
- MEDLINE
- Journal :
- RSC advances
- Publication Type :
- Academic Journal
- Accession number :
- 37323450
- Full Text :
- https://doi.org/10.1039/d3ra02352d