Materials development and prospective for protonic ceramic fuel cells

Abstract

Protonic ceramic fuel cells (PCFCs) are considered a potential and more efficient upgrade to conventional solid oxide fuel cells (SOFCs). This is predominantly due to their capacity to operate efficiently at low and intermediate temperatures and their quality of nonfuel dilution at the anode during operation. This review presents a detailed exposition of the material development strategies for the major components of PCFCs (i.e., electrolyte, cathode, and anode) and how they differ from the traditional SOFCs. Credible science backed recommendations for the synthesis and fabrication of PCFCs materials are discussed. In the end, the opportunities, challenges, and future directions for P-SOFCs are buttressed.

Protonic Transport in Layered Perovskites BaLanInnO3n+1 (n = 1, 2) with Ruddlesden-Popper Structure

“…This makes the task of creating high-efficiency solid oxide devices for electrochemical applications very important for now. The oxygen-and proton-conducting solid oxides may be components of various devices including fuel cells and electrolyzers [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. Most well-known electrolytes for medium-temperature solid oxide fuel cells (500-700 • C) are characterized by the perovskite or perovskite-related structure ABO 3−δ [22].…”

Layered Perovskites BaM2In2O7 (M = La, Nd): From the Structure to the Ionic (O2−, H+) Conductivity

“…In the case of the presence in the B-sublattice the metal with constant oxidation state such as indium, the chemical properties become completely different despite the same +8/+6 sum of cationic charges. As it was shown recently [ 17 ], the composition BaLa 2 In 2 O 7 demonstrates nearly pure protonic transport under wet air and low temperatures and this phase can be potentially considered as the electrolytic material for the solid oxide fuel cell; therefore, the development of new materials with improvement properties is very relevant today [ 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 ].…”

Solid‐state synthesis of BaCe0.16Y0.04Fe0.8O3‐δ cathode for protonic ceramic fuel cells

“…Because proton‐conducting electrolytes are quite different from oxygen ion conducting electrolyte fuel cells in the choice of materials, fuel cells using proton‐conducting electrolytes are usually called protonic ceramic fuel cells (PCFCs). With the development and application of high‐performance materials, PCFCs have been well developed in the past 10 years, and their performance has also been greatly improved 17–20 …”

“…With the development and application of high-performance materials, PCFCs have been well developed in the past 10 years, and their performance has also been greatly improved. [17][18][19][20] Studies have shown that the main factor limiting the output performance of PCFCs at medium to low temperatures (400-600 C) is the sluggish ORR process of the cathode material. To improve the overall output performance of fuel cells, a large number of oxides are used as cathode materials.…”