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Phase Transformation of Ce3+-Doped MnO2 for Pseudocapacitive Electrode Materials
26 September 2016
The phase transformation of MnO2 from β- to α-phase has been proven by doping Ce3+ ions. The capacitive performance indicated that the specific capacitance of Ce-doped MnO2 electrode materials increased 10-fold, while the charge transfer resistance of Ce-doped MnO2 decreased. The present results show that rare earth ions can be used as a promising dopant to modify the crystallization behavior and electrochemical performance of MnO2 electrode materials.