Interaction of O2, H2O and H2 with proton-conducting oxides based on lanthanum scandates

Electrochemistry and energy conversion features of protonic ceramic cells with mixed ionic-electronic electrolytes

“…In this case, the reduction of oxides is realized with the formation of either band electrons (eqn (54)) or low-ionized oxygen vacancies (eqn (55)); the latter (known as F + -centers) are a product of the double-ionized vacancies with electrons, . 102 …”

Densification and Proton Conductivity of La1-xBaxScO3-δ Electrolyte Membranes

“…where Ba / are Ba dopant atoms in La regular lattice positions, O are oxygen atoms in regular lattice positions, V •• are oxygen vacancies, and OH • are proton defects. The perovskite group of the A 3+ B 3+ O3 type, such as La1-xMxBO3-δ (where M = Ca, Sr, Ba; B = Y, Yb, Sc, In) [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27], are promising ceramic proton conductors because they have…”

Antiphase Boundary Defects in Strontium‐Doped Lanthanum Scandate

“…The synthesis techniques, as well as the characterization of the studied samples, are described in detail in our previous works. [12,13] The sintering temperatures were 1800 and 1600 C for the undoped and doped lanthanum scandates, respectively.…”

“…[9][10][11] Acceptor-doped lanthanum scandate can incorporate water from the gas phase to form protonic defects. [10][11][12][13][14][15] These defects have high mobility compared with heavy oxygen particles that cause protonic conductivity at temperatures below 700 C, which makes this material attractive in potential applications for dry hydrocarbon reforming in PCFC and PCEC devices and for use as sensors in respective atmospheres.…”