Abstract

An thin‐film cathode was deposited onto sintered alumina and substrates. After annealing at in for , the film deposited on alumina consisted of large particles with several cracks, whereas the film deposited on the substrate was composed of very small and uniform particles. The films deposited on showed improved electrochemical properties, such as peak potential divergence and rate capability, over those for the alumina substrate electrode, which can be attributed to differences of the particle size, surface morphology, and the low electrical resistance of the current collector. ©1999 The Electrochemical Society

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