Back to Search
Start Over
Dual carbon engineering enabling 1T/2H MoS 2 with ultrastable potassium ion storage performance.
- Source :
-
Nanoscale horizons [Nanoscale Horiz] 2024 Jan 29; Vol. 9 (2), pp. 305-316. Date of Electronic Publication: 2024 Jan 29. - Publication Year :
- 2024
-
Abstract
- Potassium-ion batteries (PIBs) as a promising and low-cost battery technology offer the advantage of utilizing abundant and cost-effective K-salt sources. However, the effective adoption of PIBs necessitates the identification of suitable electrode materials. The 1T phase of MoS <subscript>2</subscript> exhibits enhanced electronic conductivity and greater interlayer spacing compared to the 2H phase, leading to a capable potassium ion storage ability. Herein, we fabricated dual carbon engineered 1T/2H MoS <subscript>2</subscript> via a secure and straightforward ammonia-assisted hydrothermal method. The 1T/2H MoS <subscript>2</subscript> @rGO@C structure demonstrated an expanded interlayer spacing (9.3 Å). Additionally, the sandwich-like structural design not only enhanced material conductivity but also effectively curbed the agglomeration of nanosheets. Remarkably, 1T/2H MoS <subscript>2</subscript> @rGO@C exhibited impressive potassium storage ability, delivering capacities of 351.0 mA h g <superscript>-1</superscript> at 100 mA g <superscript>-1</superscript> and 233.8 mA h g <superscript>-1</superscript> at 1000 mA g <superscript>-1</superscript> following 100 and 1000 cycles, respectively. Moreover, the construction of a K-ion full cell was successfully achieved, utilizing perylene tetracarboxylic dianhydride (PTCDA) as the cathode, and manifesting a capacity of 294.3 mA h g <superscript>-1</superscript> at 100 mA g <superscript>-1</superscript> after 160 cycles. This underscores the substantial potential of employing the 1T/2H MoS <subscript>2</subscript> @rGO@C electrode material for PIBs.
Details
- Language :
- English
- ISSN :
- 2055-6764
- Volume :
- 9
- Issue :
- 2
- Database :
- MEDLINE
- Journal :
- Nanoscale horizons
- Publication Type :
- Academic Journal
- Accession number :
- 38115741
- Full Text :
- https://doi.org/10.1039/d3nh00404j