Henan University of Technology

About: Henan University of Technology is a education organization based out in Zhengzhou, China. It is known for research contribution in the topics: Catalysis & Starch. The organization has 7648 authors who have published 6503 publications receiving 73067 citations. The organization is also known as: Hénán Gōngyè Dàxué.

Economic analysis of energy production from coal/biomass upgrading; Part 1: Hydrogen production

Abstract: Hydrogen production by steam-gasification is an interesting method compared to other common methods which has a wide range of applications including Proton Exchange Membrane (PEM) fuel cells and ga...

Design of tetraphenyl silsesquioxane based covalent-organic frameworks as hydrogen storage materials

Abstract: Four types of tetraphenyl silsesquioxane based covalent-organic frameworks (sil-COFs) were designed with the ctn and bor net topologies using molecular mechanics. The computed results revealed that these sil-COFs possess excellent structural properties, such as high porosity (89–95%) and large H2 accessible surface area (5476–6331 m2 g−1), which is advantageous to hydrogen storage. The H2 adsorption isotherms of these sil-COFs were simulated using the grand canonical Monte Carlo (GCMC) method at 77 K and 298 K. The simulated results indicated that at 77 K, sil-COF-4 has the highest gravimetric hydrogen storage capacity of 36.82 wt%, while sil-COF-1 has the highest volumetric hydrogen storage capacity of 63.53 g L−1. At 298 K, sil-COF-4 has the highest gravimetric hydrogen uptake of 5.50 wt%, which already exceeds the U.S. Department of Energy's goal (4.5 wt%) for 2017 and is also very close to the criterion of 6 wt% for practical applications of hydrogen at room temperature. In addition, two possible schemes are proposed to synthesize the sil-COFs.

Hollow-sphere ZnSe wrapped around carbon particles as a cycle-stable and high-rate anode material for reversible Li-ion batteries

Abstract: Hollow-sphere ZnSe is successfully obtained through Ostwald ripening Carbon nanoparticles are designed and utilized to form a wrapped carbon network as a conductive buffering matrix by subsequent annealing The ZnSe/C composites, as anode materials for lithium-ion batteries (LIBs), exhibit excellent Li+ storage properties, delivering a high reversible capacity of 5737 mA h g−1 at 10 A g−1 after 800 cycles Even upon increasing the high current density to 200 A g−1, the reversible capacity can achieve 3188 mA h g−1 after 5000 cycles The superior rate capability is confirmed through the current density return from 200 to 10 A g−1, and ZnSe/C composites still recover up to 469 mA h g−1, with a retention of 92% The enhanced electrochemical performances of ZnSe/C composites are attributed to the unique structure and the introduction of conductive carbon networks, which can improve the Li+ diffusion coefficient in the insertion and extraction process Furthermore, the interconnected network also alleviates the volume variation during cycling and further enhances the structural stability