Characteristics of novel BaZr0.4Ce0.4In0.2O3 proton conducting ceramics and their application to hydrogen sensors

BaCeO3: Materials development, properties and application

“…The possibility of using barium cerate based materials in hydrogen sensors has been studied in several works [234][235][236]. Taniguchi Hydrocarbons (CH 4 , C 2 H 4 , C 6 H 4 ), CO 2 and N 2 appeared to be inert according to the hydrogen sensor at 200°C and they behaved only as a diluent for hydrogen.…”

Formation of dense electrolytes based on BaCeO3 and BaZrO3 for application in solid oxide fuel cells: The role of solid-state reactive sintering

“…Since the dis covery of proton conduction in materials with perovskite structure (Iwahara et al, 1980s [3,4]), it is also revealed at present in oxide systems with structure of brownmillerite [5,6], scheelite [7,8], pyrochlore [9], and even fluorite [10]. This unique feature opens the possibility of applying such materials as electrolytes for intermediate and high temperature electrochemical devices, including solid oxide fuel cells (SOFC) [11], sensors [12], electrolyzers [13], membrane reactors for high purity hydrogen production [14], ammonia synthesis [15], natural fuel desulfidization [16], and hydrogenation/dehydrogenation of simple hydrocarbons [17].…”

Sintering, chemical stability and electrical conductivity of the perovskite proton conductors BaCe0.45Zr0.45M0.1O3−δ (M=In, Y, Gd, Sm)

“…The high temperature proton conductors (HTPC) have a great potential for applications, such as steam electrolyzers, gaseous sensors, fuel cells, hydrogen pumps and in reactors for synthesis of ammonia at atmospheric pressure [5][6][7][8][9][10][11][12][13][14][15][16][17][18]. By partially substituting Ce 4+ or Zr 4+ with aliovalent rare earth ions, such as Y 3+ , Gd 3+ , Sm 3+ , Nd 3+ or Yb 3+ , charge compensation is achieved through the formation of oxide ion vacancies, so the subsequent incorporation of protons takes place through the filling of oxygen vacancies.…”