Lithium manganese oxide with excellent electrochemical performance prepared from chemical manganese dioxide for lithium ion batteries

► Chemical manganese dioxide (CMD) is prepared from the SEDEMA process. ► LMO prepared from the CMD has more uniform particles size and less BET area. ► The unique morphology of the LMO is originated by that of the CMD. ► The LMO prepared from the CMD shows good rate capability and cycling stability. ► The excellent performances result from the unique morphology of the LMO