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Replacing the volatile and flammable liquid or polymer electrolytes now used in lithium-ion batteries with inorganic solid-state lithium-ionic ceramic conductors could significantly improve both safety and performance of the cells. Solid-state conductors would allow for novel cathode and anode chemistry, prevent the growth of Li-metal dendrites and push miniaturization.Though researchers have investigated several structural families of promising solid-state Li-ion conductors over the past decades, the fact that there are many desired properties--including fast-ionic/superionic diffusion of Li ions, very low electronic mobility, wide electrochemical stability windows, and high mechanical stability--means that no one material has emerged as an ideal candidate for development and so the searc...
发布时间: 2020 - 01 - 22
浏览次数:223
Open-cell materials, such as metal and ceramic foams, have been extensively utilized in high-temperature applications due to their light weight, good flow-mixing capability, and ability to cover a large surface area. They are commonly composed of interconnected solid struts and accessible void spaces
发布时间: 2019 - 01 - 14
浏览次数:184
Researchers have developed a ceramic-based mechanical pump able to operate at record temperatures of more than 1,400 degrees Celsius (1,673 Kelvin), opening the door to a new generation of energy conversion and storage systems.
发布时间: 2019 - 01 - 08
浏览次数:189
Printing complex ceramic objects has been made possible thanks to the invention of a new ink.
发布时间: 2019 - 01 - 02
浏览次数:178
Scientists of the Far Eastern Federal University (FEFU) and the Russian Academy of Sciences (RAS) have designed a new, high-strength ceramic material that can withstand prolonged exposure to supersonic airflow at temperatures above 2600°C.
发布时间: 2018 - 12 - 25
浏览次数:143
The era of electromobility presents new challenges which must be mastered by both man and materials. Today, neodymium-iron-boron-magnets are used in areas in which strong magnetic fields at low volumes and low weights are necessary. These so-called rare earth magnets guarantee the resource conservation of raw materials, weight reduction of the drives and longer service lives required of permanent magnets. However, they are more complicated to manufacture than conventional magnets. A decisive factor for the quality and properties of permanent magnets is a raw material with a narrow particle size distribution with the lowest possible fraction of finest- ( 8 µm).
发布时间: 2018 - 12 - 24
浏览次数:148
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