Synthesis and structural characterization of perovskite type proton conducting BaZr1−xInxO3−δ (0.0≤x≤0.75)

Some factors affecting the electrochemical performances of LaCrO3 as negative electrodes for Ni/MH batteries

“…Furthermore, the existence form of protons in LaCrO 3 electrodes may be differ from that of Ref. [21], in which the protons reside on oxygen ions to form substitutional OH − ion defects [22,23], since no obvious expansions of cell parameters are observed ( Table 1). The size and morphology of the as-synthesized LaCrO 3 powders are also analyzed by Malvan Nano-ZS90 laser grainsize analyzer and SEM.…”

Structural study and proton conductivity in Yb-doped BaZrO3

“…However, electronic holes can be formed in an oxidizing atmosphere [19,20]. Often an expansion of the unit cell parameter after hydration is observed [21][22][23]. This expansion is a result of filling of oxygen vacancies (V O UU ) by hydroxyl groups (OH O U ) in the presence of water vapour according to the following reaction, As suggested by Knight [24] a higher doping, which corresponds to a higher concentration of D in the structure, is required to obtain accurate refinement of deuterium positions, thermal parameters, site occupancies etc.…”

Water incorporation into the Ba2(In1− xMx)2O5‪ (M=Sc3+ 0≤x<0.5 and M=Y3+ 0≤x<0.35) system and protonic conduction

“…x substituted compounds mentioned above when they react with water vapor [8][9][10][11][12][13][14]. It can be seen that the weight gained between RT and 350°C is smaller than the weight lost above 350°C.…”

“…In addition to being an oxygen ion conductor, Ba 2 In 2 O 5 undergoes a reversible phase transformation upon exposure to a wet atmosphere at ≈250°C and exhibits proton conductivity [6,7]. Incorporation of water has already been mentioned in many Ba 2 [8][9][10], Ti [11,12], (V, Mo, W) [13], (Ga, Sc, Lu, Y) [14]) and more carefully studied in (Ba 1 −x La x ) 2 In 2 O 5 +x − n □ 1 −x − n (OH) 2n (0 ≤xb 0.6) [15] compounds.…”