• 中文核心期刊要目总览
  • 中国科技核心期刊
  • 中国科学引文数据库(CSCD)
  • 中国科技论文与引文数据库(CSTPCD)
  • 中国学术期刊文摘数据库(CSAD)
  • 中国学术期刊(网络版)(CNKI)
  • 中文科技期刊数据库
  • 万方数据知识服务平台
  • 中国超星期刊域出版平台
  • 国家科技学术期刊开放平台
  • 荷兰文摘与引文数据库(SCOPUS)
  • 日本科学技术振兴机构数据库(JST)

Redefining electrolyte efficiency: bridging the gap with a systematic samarium–copper co-doping approach for optimized conductivity in advanced semiconductor ionic fuel cell

Redefining electrolyte efficiency: bridging the gap with a systematic samarium–copper co-doping approach for optimized conductivity in advanced semiconductor ionic fuel cell

  • 摘要: Significant efforts have been dedicated to developing next-generation optimal electrolytes for high-performance low-temperature solid oxide fuel cells (SOFCs). In this study, we present an innovative co-doping strategy, incorporating samarium (Sm3+) and copper (Cu2+) into ceria (CuxSm0.2-xCe0.8O2, x = 0, 0.05, 0.10, 0.15). By leveraging Sm3+ and Cu2+ to create oxygen vacancies and Cu2+ to further induce the controlled electronic characteristics, we engineered a material with enhanced proton conductivity and efficient electronic transfer and ionic transport. Distribution of relaxation times and electrochemical impedance spectroscopy analyses revealed significantly reduced grain boundary resistance and efficient proton conduction over the temperature range of 320 °C to 520 °C. Notably, the optimized Cu0.1Sm0.1Ce0.8O2 composition achieved a peak power density of 902 mW cm-2 with appreciable ionic conductivity of 0.16 S cm-1 at 520 °C, demonstrating its potential as a high-performance electrolyte. UV-Vis analysis indicated a reduced band gap, while DC polarization measurements indicated electronic conductivity of 0.019 S cm-1, suggesting the material possesses semiconducting properties suitable for the electrochemical applications. Advanced physical characterizations and their analysis provided detailed information of the materials, which are suitable for the fuel cell applications. In addition, the post stability of fuel cell device’s characterizations provided the detail information and evident the stable behavior of the as-prepared optimal Cu0.1Sm0.1Ce0.8O2 (10-CSC) material acted as electrolyte. These findings position Cu0.1Sm0.1Ce0.8O2 as a promising candidate for intermediate-temperature SOFCs, representing a significant advancement in semiconductor ionic electrolyte materials.

     

    Abstract: Significant efforts have been dedicated to developing next-generation optimal electrolytes for high-performance low-temperature solid oxide fuel cells (SOFCs). In this study, we present an innovative co-doping strategy, incorporating samarium (Sm3+) and copper (Cu2+) into ceria (CuxSm0.2-xCe0.8O2, x = 0, 0.05, 0.10, 0.15). By leveraging Sm3+ and Cu2+ to create oxygen vacancies and Cu2+ to further induce the controlled electronic characteristics, we engineered a material with enhanced proton conductivity and efficient electronic transfer and ionic transport. Distribution of relaxation times and electrochemical impedance spectroscopy analyses revealed significantly reduced grain boundary resistance and efficient proton conduction over the temperature range of 320 °C to 520 °C. Notably, the optimized Cu0.1Sm0.1Ce0.8O2 composition achieved a peak power density of 902 mW cm-2 with appreciable ionic conductivity of 0.16 S cm-1 at 520 °C, demonstrating its potential as a high-performance electrolyte. UV-Vis analysis indicated a reduced band gap, while DC polarization measurements indicated electronic conductivity of 0.019 S cm-1, suggesting the material possesses semiconducting properties suitable for the electrochemical applications. Advanced physical characterizations and their analysis provided detailed information of the materials, which are suitable for the fuel cell applications. In addition, the post stability of fuel cell device’s characterizations provided the detail information and evident the stable behavior of the as-prepared optimal Cu0.1Sm0.1Ce0.8O2 (10-CSC) material acted as electrolyte. These findings position Cu0.1Sm0.1Ce0.8O2 as a promising candidate for intermediate-temperature SOFCs, representing a significant advancement in semiconductor ionic electrolyte materials.

     

/

返回文章
返回