A high-performance SDC-infiltrated nanoporous silver cathode with superior thermal stability for low temperature solid oxide fuel cells. Issue 17 (11th April 2018)

• Record Type: Journal Article
• Authors: Lee, Tsung-Han; Fan, Liangdong; Yu, Chen-Chiang; Wiria, Florencia Edith; Su, Pei-Chen
• Is Part Of: Journal of materials chemistry. Volume 6:Issue 17(2018)
• Page Start: 7357
• Page End: 7363
• Publication Date: 2018-04-11
• Subjects: Materials -- Research -- Periodicals; Chemistry, Analytic -- Periodicals; Environmental sciences -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c8ta01104d
• Languages: English
• ISSNs: 2050-7488

Abstract

Abstract : A simple and effective infiltration method is demonstrated to improve the thermal stability and electrochemical performance of a nanoporous silver cathode. Abstract : Superior thermal stability of a nanoporous silver thin film cathode is enabled by covering the silver nanoparticles with a thin layer of samarium-doped ceria (SDC). A simple solution infiltration process followed by post heat treatment at 500 °C is applied to coat a thin SDC layer over inkjet-printed silver nanoparticle thin films to physically confine the silver nanoparticles to prevent thermal agglomeration. The electrochemical performance of the SDC-infiltrated silver cathode also surpasses that of both a non-infiltrated silver cathode and a typical sputtered nanoporous platinum cathode. A 60 hour fuel cell current stability test using the SDC-infiltrated silver cathode shows only 12.4% current degradation, which is significantly lower than 73.6% degradation from the fuel cell using a non-infiltrated silver cathode.