Showing 23 results for Researcher: Yongqiang Cheng
June 1, 2020
2 MIN READ
A new strategy to design strong metal-support interaction via a reverse route (SMSIR) is reported by starting from the final fully encapsulation, core-shell structure and treating it to obtain an intermediate state with favorable exposure of metal sites for selective hydrogenation of acetylene to ethylene.
March 1, 2020
1 MIN READ
In situ inelastic neutron scattering (INS) and IR spectroscopy provide the first direct evidence for the catalytic roles of cerium hydride (Ce-H) and hydroxyl group (OH) groups in acetylene hydrogenation over ceria as a function of the density of oxygen vacancies.
February 3, 2020
5 MIN READ
An international team of researchers has discovered the hydrogen atoms in a metal hydride material are much more tightly spaced than had been predicted for decades — a feature that could possibly facilitate superconductivity at or near room temperature and pressure.
January 21, 2020
5 MIN READ
In the quest for domestic sources of lithium to meet growing demand for battery production, scientists at ORNL are advancing a sorbent that can be used to more efficiently recover the material from brine wastes at geothermal power plants.
December 16, 2019
4 MIN READ
Illustration of the optimized zeolite catalyst, or NbAlS-1, which enables a highly efficient chemical reaction to create butene, a renewable source of energy, without expending high amounts of energy for the conversion. Credit: Jill Hemman, Oak Ridge National Laboratory/U.S. Dept. of Energy
November 22, 2019
6 MIN READ
An international team of scientists, led by the University of Manchester, has developed a metal-organic framework, or MOF, material
April 24, 2019
5 MIN READ
Ionic conduction involves the movement of ions from one location to another inside a material. The ions travel through point defects, which are irregularities in the otherwise consistent arrangement of atoms known as the crystal lattice. This sometimes sluggish process can limit the performance and efficiency of fuel cells, batteries, and other energy storage technologies.
June 11, 2018
5 MIN READ
Led by the University of Manchester, an international team of scientists has developed a metal-organic framework material (MOF) that exhibits a selective, fully reversible and repeatable capability to remove nitrogen dioxide gas from the atmosphere in ambient conditions.
November 7, 2017
5 MIN READ
Having the right tool for the job enabled scientists at the Department of Energy’s Oak Ridge National Laboratory and their collaborators to discover that a workhorse catalyst of vehicle exhaust systems—an “oxygen sponge” that can soak up oxygen from air and store it for later use in oxidation reactions—may also be a “hydrogen sponge.”
May 5, 2016
5 MIN READ
In a rechargeable battery, the electrolyte transports lithium ions from the negative to the positive electrode during discharging. The path of ionic flow reverses during recharging. The organic liquid electrolytes in commercial lithium-ion batteries are flammable and su...
January 19, 2016
5 MIN READ
Rechargeable batteries power everything from electric vehicles to wearable gadgets, but obstacles limit the creation of sleeker, longer-lasting and more efficient power sources. Batteries produce electricity when charged atoms, known as ions, move in a circuit from a positive end ...