Journal Article chemical vapor deposition graphene liquid Cu Research Support, Non-U.S. Gov't cathode electrolyte interphase dielectric substrates engineering graphene arrays graphene single crystals high‐voltage batteries in situ etching lithium metal batteries lithium‐rich manganese‐based oxides morphology non-metal catalyst growth partially fluorinated electrolyte single-crystal size top-down approach transfer-free device fabrication twelve-pointed shape