Buttercream the butter (which has a variable melting point below ) as it is subsequently beaten in. French buttercream (also known as pâte à bombe-based buttercream or common buttercream) is made with whipped egg yolks. Custard-based buttercream is prepared by beating together pastry cream and softened butter, and may be additionally sweetened with extra confectioners' sugar. Buttercream Buttercream is a type of icing or filling used either inside cakes, as a coating, or as decoration. Simple buttercream is made by creaming together fats (butter, margarine, or vegetable oil shortening) and powdered sugar to the desired consistency and lightness. Typically twice as
Graphene foam A physically flexible battery was created using the foam for electrodes. The anode was made by coating the foam with a lithium-titanium compound () and the cathode by coating the foam with . Both electrodes were lightweight and their large surface area provided high energy density of 110 Wh/kg, comparable to commercial batteries. Power density was much greater than a typical battery. At a rate that completely discharged the material in 18 seconds, power delivered was 80 percent of what it produced during an hour-long discharge. Performance remained stable through 500 charge/discharge cycles. In 2017 researchers used carbon nanotubes to