【摘 要】
：
Rational electrode structure design is of great significance for realizing superior Na+storage performance.Herein,a metal salt-induced polymer blowing-bubble ap
【机 构】
：
MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage,School of
论文部分内容阅读
Rational electrode structure design is of great significance for realizing superior Na+storage performance.Herein,a metal salt-induced polymer blowing-bubble approach followed by selenization procedure is developed to in-situ generate abundant sub-10 nm CoSe2 nanocrystals on 3D Se/N co-doped carbon net-works(CoSe2@3DSNC).The phase transition from Co to CoSe2 and the incorporation of Se into the carbon layer are realized simultaneously to establish above configuration,in which the CoSe2 nanocrystals are anchored on interlayer expanded carbon networks.Such unique configuration endows electrode with lower Na+diffusion energy barrier,higher Na+storage capability and better structural durability.Reflected in SIBs,the optimized CoSe2@3DSNC delivers superior rate capability(310 mAh g-1 at 10 Ag-1)and excellent long-term cycling stability(409 mAh g-1 after 1200 cycles at 5 A g-1).Moreover,this configuration can also be obtained in other metal selenides-carbon composite through a similar approach.
其他文献
Developing high-performance anodes for potassium ion batteries (KIBs) is of paramount significance but remains challenging.In the normal sense,electrode materia
Metal-modified H-ZSM-5 has a high selectivity of aromatics in methanol to aromatics(MTA)reaction,which is often attributed to the metal promoting the aromatizat
Currently,lithium-sulfur(Li-S)batteries still suffer from fast capacity decay,poor coulombic efficiency(CE)and short cycling lifespan,which result from the seve
Developing efficient and low-cost electrocatalysts is essential for the electroreduction of N2 to NH3.Here,highly monodispersed MoO3 clusters loaded on a coral-
The low efficiency of oxygen evolution reaction (OER) is regarded as one of the major roadblocks for metal-air batteries and water electrolysis.Herein,a high-pe
The transportation of the proton, the smallest ion in nature, is rudimentary in chemical and biological reactions [1,2], such as photosynthesis [3], enzyme cata
Aqueous zinc-ion batteries (ZIBs) are attracting considerable attention because of their low cost,high safety and abundant anode material resources.However,the
Although computational studies have demonstrated that metal ion doping can effectively narrow the bandgap of TiO2,the visible-light photoactivity of metal-doped
The “one pot” simultaneous carbon coating and doping of TiO2 materials by the hydrolysis of TiCl4 in fructose is reported.The synergistic effect of carbon dop
The flexibility of molecular catalysts is highly coveted for the electrochemical reduction of carbon dioxide (CO2) to carbon monoxide (CO) in both homogeneous a