【摘 要】
：
Silicon has a large impact on the energy supply and economy in the modern world.In industry,high purity silicon is firstly prepared by carbothermic reduction of silica with the produced raw silicon being further refined by a modified Siemens method.This p
【机 构】
：
The State Key Laboratory of Refractories and Metallurgy, College of Materials and Metallurgy, Wuhan
论文部分内容阅读
Silicon has a large impact on the energy supply and economy in the modern world.In industry,high purity silicon is firstly prepared by carbothermic reduction of silica with the produced raw silicon being further refined by a modified Siemens method.This process suffers from the disadvantages of high cost and contaminant release and emission.As an alternative,the molten salt electrolysis approach,particularly the FFC Cambridge Process (FFC: Fray-Farthing-Chen),could realize high purity silicon products with morphology-controllable nanostructures at low or mild temperatures (generally 650-900 ℃).In this article,we review the development,reaction mechanisms,and electrolysis conditions of silicon production by the FFC Cambridge Process.Applications of the silicon products from electrolysis in molten salts are also discussed in terms of energy applications,including using them as the photovoltaic element in solar cells and as the charge storage phase in the negative electrode (negatrode) of lithium ion batteries.
其他文献
The rapid development of modern electronic devices has promoted more research in the field of high energy-density storage devices [1].Lithium ion batteries (LIBs) have been widely used in electronic devices and hybrid electric vehicles since their success
Precise control over the charge carrier dynamics throughout the device can result in outstanding performance of perovskite solar cells (PSCs).Poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PE-DOT:PSS) is the most actively studied hole transport
Lithium-sulfur batteries (LSBs) are promising alternative energy storage devices to the commercial lithium-ion batteries.However,the LSBs have several limitations including the low electronic conductivity of sulfur (5 × 10-30 S cm-1),associated lithium po
The molten mixtures of alkali metal fluorides and aluminum fluoride are applied as aluminum electrolytes or brazing fluxes.However,the presence of Al2F7-in such molten systems is disputed.In the present study,MF-AlF3 (M =K,Cs) systems with molar ratios ＜
β-Ge3N4 loaded with nanoparticulate RuO2 as a cocatalyst is the first successful non-oxide photocatalyst for overall water splitting.To get an insight into the working mechanism of this particular photocatalytic system,we have calculated geometrical struc
Lithium-sulfur (Li-S) battery is a potential energy storage technology with high energy density and low cost.However,the gap between theoretical expectation and practical performance limits its wide implementation.Herein,we report a nitrogen-doped porous
Thermal runaway is the main factor contributing to the unsafe behaviors of lithium-ion batteries (LIBs) in practical applications.The application of separators for the thermal shutdown has been proven as an effective approach to protecting LIBs from therm
Lithium metal has a high theoretical capacity of 3860 mAh g-1 and a low electrochemical potential (-3.04V vs.H2/H+).Hence,using a lithium anode significantly improves the energy density of a secondary battery.However,the lithium dendrites generated on the
In this work,a comprehensive study on the deliberate molecular design and modifications of electron donors is carried out to elucidate correlations between the methoxy effects and donor configuration of hole-transporting materials (HTMs).Our initial findi
A series of CuO/Ce1-xZrxO2 catalysts (x =0.2,0.4,0.6 and 0.8) are applied to elaborate the effect of the Zr/Ce ratio on the catalytic performance of CO2 hydrogenation to CH3OH.The best catalytic performance is achieved with CuO/Ce0.4Zr0.6O2,exhibiting XCO