The feasibility of using Bi-doped manganese dioxide as the cathode in a primary alkaline zinc cell is discussed. A Bi-doped MnO2 cathode material made by the CMD process is examined with respect not only to its discharge in conditioning cycles but also with achievement of practically high voltage on discharge. With suitable composition of the Bi/MnO2 composite, remarkably high C-rates for discharge and recharge are achieved with little polarization. The Bi-Mn-O compounds with possible structures are also discussed.