Abstract: An electronic device includes a multilayer circuit board having a non-planar three-dimensional shape defining a membrane switch recess therein. The multilayer circuit board may include at least one liquid crystal polymer (LCP) layer, and at least one electrically conductive pattern layer thereon defining at least one membrane switch electrode adjacent the membrane switch recess to define a membrane switch. The electronic may further include a compressible dielectric material filling the membrane switch recess. The electronic device may also include at least one spring member within the membrane switch recess.

Abstract: An electronic device includes a multilayer circuit board having a non-planar three-dimensional shape defining a battery component receiving recess. The multilayer circuit board may include at least one pair of liquid crystal polymer (LCP) layers, and at least one electrically conductive pattern layer on at least one of the LCP layers and defining at least one battery electrode adjacent to the battery component receiving recess. The electronic device may further include a battery component within the battery component receiving recess and coupled to the at least one battery electrode to define a battery.

Abstract: A composition for forming an electrode for a lithium ion secondary battery includes a carbonaceous material combined with a fullerene material including fullerene species having a carbon content of Cn, where n?100. The composition is heated to a temperature of 100° C. or greater to facilitate reaction and/or diffusion of the fullerene material with the carbonaceous material, and also to remove lower molecular weight (C<100) fullerenes from the composition. In addition, other extraction techniques may be utilized in combination with heat treatment to selectively remove fullerene species from the fullerene material. The composition enhances the electrochemical performance of the electrode in the lithium ion battery.