▎ 摘　　要

NOVELTY - Preparing high density and high electrochemical graphene involves dissolving high density graphene in ionic liquid at 100-450 degrees C for 1 hours and carrying out solid liquid separation. The separated product is washed with de-ionized water until it becomes neutral and dried in blast drying box to obtain high density high electrochemical specific graphene. The ionic liquid is selected from inorganic acid, inorganic alkali, inorganic salt or organic salt. USE - Method for preparing high density and high electrochemical graphene (claimed). ADVANTAGE - The method enables to prepare high density and high electrochemical graphene, which has high-quality specific capacity and has high volumetric capacity.