Interface engineering of an electrospun nanofiber-based composite cathode for intermediate-temperature solid oxide fuel cells

作     者：Seo Ju Kim Deokyoon Woo Donguk Kim Tae Kyeong Lee Jaeyeob Lee Wonyoung Lee Seo Ju Kim;Deokyoon Woo;Donguk Kim;Tae Kyeong Lee;Jaeyeob Lee;Wonyoung Lee

作者机构：School of Mechanical EngineeringSungkyunkwan UniversitySuwonKyunggi-do 16419Republic of Korea SKKU Institute of Energy Science and Technology(SIEST)Sungkyunkwan UniversitySuwon 16419Republic of Korea 

出 版 物：《International Journal of Extreme Manufacturing》 (极端制造（英文）)

年 卷 期：2023年第5卷第1期

页      面：345-353页

核心收录：

学科分类：0831[工学-生物医学工程（可授工学、理学、医学学位）] 1002[医学-临床医学] 0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 0703[理学-化学] 

基　　金：supported by the National Research Foundation of Korea (NRF) Grant funded by the Korean government (MSIT)(Nos. 2022R1A2C3012372 and 2022R1A4A1031182) Korea Institute for Advancement of Technology(KIAT) Competency Development Program for Industry Specialists of Korean Ministry of Trade,Industry and Energy Grant funded by the Korea Government(MOTIE)(No. P0008458, The Competency Development Program for Industry Specialist and No. P0017120, HRD program for Foster R&D specialist of parts for ecofriendly vehicle (xEV)) 

主　　题：solid oxide fuel cells nanofiber infiltration oxygen reduction reactions oxygen vacancy 

摘      要：Sluggish oxygen reduction reaction(ORR)kinetics are a major obstacle to developing intermediate-temperature solid-oxide fuel cells(IT-SOFCs).In particular,engineering the anion defect concentration at an interface between the cathode and electrolyte is important for facilitating ORR kinetics and hence improving the electrochemical *** developed the yttria-stabilized zirconia(YSZ)nanofiber(NF)-based composite cathode,where the oxygen vacancy concentration is controlled by varying the dopant cation(Y2O3)ratio in the YSZ *** composite cathode with the optimized oxygen vacancy concentration exhibits maximum power densities of 2.66 and 1.51 W cm^(−2)at 700 and 600℃,respectively,with excellent thermal stability at 700℃ over 500 h under 1.0 A cm^(−2).Electrochemical impedance spectroscopy and distribution of relaxation time analysis revealed that the high oxygen vacancy concentration in the NF-based scaffold facilitates the charge transfer and incorporation reaction occurred at the interfaces between the cathode and *** results demonstrate the high feasibility and potential of interface engineering for achieving IT-SOFCs with higher performance and stability.