▎ 摘　　要

The quantum capacitance of the monolayer graphene for arbitrary carrier density, magnetic field, temperature and LL broadening is found. The density dependence of the quantum capacitance is analyzed when magnetic field (temperature) is fixed (varied) and vice versa. High-field induced splitting of the LL energy spectrum is examined. The theory is compared with the experimental data. (C) 2015 Elsevier B.V. All rights reserved.