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article
Application of the cold sintering process to the electrolyte material BaCe0.8Zr0.1Y0.1O3-δ
Abstract
This paper describes and discusses the application of the original sintering process named cold sintering to the electrolyte material BaCe 0.8 Zr 0.1 Y 0.1 O 3δ to enhance its densification at a temperature below that needed in a conventional sintering. This new technique enables the acceleration of the densification resulting in a more compacted microstructure with an unexpected high relative density of 83 % at only 180 ° C. A subsequent annealing at 1200 ° C further enhances the densification which reaches 94 %. The electrochemical performance of CSP sintered ceramics was investigated and optimized by varying different process parameters. The comparison with the conventional sintered material reveals an increase of the total conductivity by mostly increasing the grain boundary one. This result emphasizes the benefits of CSP to not only reduce the sintering temperature but also to enhance the electrochemical properties.