Journal of Energy Science and Technology is an international, peer-reviewed open access journal dedicated to advancing research the field of energy science and technology. The journal provides a rapid publication process to ensure wide dissemination of high-quality articles to scientists, professionals, and interested individuals worldwide. Our goal is to serve as an efficient, reliable, and trusted platform for scholars and readers, publishing cutting-edge research in the field.
Abstract: With the increasing demand for mileage and lifespan in the E-vehicles, it is imperative to develop a new generation of SiC materials for high-capacity Li-ion batteries, which has also been a very hot research subject both domestically and internationally during the past two decades. This article focuses on the latest progress on SiC composite structures, electrolyte additives and novel binders. By designing SiC composites with different structures, problems such as large volume expansion, poor conductivity, and unstable SEI film of Si-based electrodes can be alleviated effectively. Among them, porous Si/carbon/graphite composites are considered a promising composite structure due to the advantages of rich pore channels, effective release of enormous stress caused by Si volume changes, as well as the shortened distance for lithium ions transport. However, it is a highly challenging task how to reduce the synthesis cost of nano porous silicon and its Si/C/G composites that needs to be focused on in the future. The other two important factors that affect the electrochemical performance of SiC materials are of electrolyte additives and binders. Agreeing to use two or more different additives can more effectively achieve synergistic effects to compensate for the shortcomings of one additive; It is a very interesting self-healing adhesive/binder that can solve the problems of material cracks and structural damage caused by volume changes in SiC electrodes, which can significantly improve the cycling stability and rate capability. This article provides a concise summary of their latest research results in recent years, and prospects for future research trends in the application of Si-based materials in the Li-ion batteries.Abstract: With the increasing demand for mileage and lifespan in the E-vehicles, it is imperative to develop a new generation of SiC materials for high-capacity Li-ion batteries, which has also been a very hot research subject both domestically and internationally during the past two decades. This article focuses on the latest progress on SiC composite struc...Learn More
Abstract: Biodiesel as a typical renewable energy relies on catalysts for transesterification reaction in the mass production process. Solid base catalysts are widely used for their advantages of high selectivity, no corrosion of equipment, and easy separation and recovery of reaction products. Studying the reaction scheme of solid base catalysts and understanding the reaction processes are fundamentally important for guiding the mass production of biodiesel. This work employed a molecular dynamic simulation method based on the density functional theory to systematically study the adsorption configurations of transesterification reactants including methanol, acetic acid, and ethyl formate on the surface of solid base catalyst strontium oxide. The adsorption energies of different end adsorption systems were calculated, and the sites with the lowest adsorption energies of methanol, acetic acid and ethyl formate on the surface of strontium oxide were determined. The ideal reaction temperature of transesterification reaction was investigated from the diffusion coefficient and radial distribution function. An optimized reaction temperature in the range of 300-500 K was determined that can yield the highest reaction rate between methanol and ethyl formate or acetic acid and ethyl formate. Meanwhile, an optimized reaction temperature was also determined for methanol, acetic acid and ethyl formate to adsorb on the surface of strontium oxide, which is favorable for the subsequent transesterification of methanol, acetic acid and ethyl formate on strontium oxide.Abstract: Biodiesel as a typical renewable energy relies on catalysts for transesterification reaction in the mass production process. Solid base catalysts are widely used for their advantages of high selectivity, no corrosion of equipment, and easy separation and recovery of reaction products. Studying the reaction scheme of solid base catalysts and underst...Learn More
