Inherent defects, such as grain boundaries (GBs), wrinkles and structural cracks, present on chemical vapor deposition (CVD)-grown graphene are inevitable because of the mechanism used for its ...

Metals mostly occur as compounds in rocks and minerals and must be extracted before they can be used. The method used to extract the pure metal depends on its position in the reactivity series. Metals ...

You can produce electricity from a cell which is made of two different metals where the metals are dipping into solutions of their own ions. A simple cell has some essential features: It is made of ...