期刊
ADVANCED FUNCTIONAL MATERIALS
卷 28, 期 27, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201706125
关键词
2D composites; MoS2 layers; potassium-ion batteries; Prussian blue; sodium-ion batteries
类别
资金
- Spanish MINECO [MAT2014-56143-R, MDM-2015-0538]
- EU (ERC Proof of Concept Hy-MAC) [713704]
- 2D-INK- [664878]
- ERC Stg Chem-fs-MOF [714122]
- Generalidad Valenciana (Prometeo Program)
- Spanish MINECO
- European Union Horizon 2020 Marie Curie Actions under the project SPIN2D [H2020/2014-659378]
- Universitat de Valencia
- Junta de Andalucia for post-doctoral fellowship [P10-FQM-6050]
- Portuguese Foundation for Science and Technology (FCT) [UID/Multi/04349/2013]
Prussian blue (PB) represents a simple, economical, and eco-friendly system as cathode material for sodium-ion batteries (SIBs). However, structural problems usually worsen its experimental performance thus motivating the search for alternative synthetic strategies and the formation of composites that compensate these deficiencies. Herein, a straightforward approach for the preparation of PB/MoS2-based nanocomposites is presented. MoS2 provides a 2D active support for the homogeneous nucleation of porous PB nanocrystals, which feature superior surface areas than those obtained by other methodologies, giving rise to a compact PB shell covering the full flake. The nanocomposite exhibits an excellent performance as cathode for SIBs with discharge capacity values up to 177 mA h g(-1) and a specific capacitance of 354 F g(-1). These values are even larger for the intercalation of K+ ions (up to 215 mA h g(-1), reaching a specific capacitance of 489 F g(-1)). Compared to similar composites, superior performance can be ascribed to a synergistic effect of the coordination compound with the 2D material.
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