Repidocrote type lithium potassium titanate, method for preparation thereof, and friction material

Lepidocrocite lithium potassium titanate characterized as having a composition represented by the formula K0.5-0.7Li0.27Ti1.73O3.85-3.95, and preferably having an arithmetic mean of major and minor diameters of 0.1-100 μm, a proportion of a major to minor diameter of from 1 to below 10, a mean thickness of 50-5, 000 nm and a flaky shape. A friction material characterized as containing 1-80% by weight of the lepidocrocite lithium potassium titanate as a friction control agent.