Enhancing the sinterability and electrical properties of BaZr_0.1Ce_0.7Y_0.2O_3‐δ proton‐conducting ceramic electrolyte

Abstract

A novel strategy was proposed to enhance the sinterability and electrical properties of BaZr 0.1 Ce 0.7 Y 0.2 O 3-δ (BZCY) proton-conducting electrolyte by adding 10 wt.% La 0.9 Sr 0.1 Ga 0.8 Mg 0.2 O 3-δ (LSGM) to form a 90 wt.% BZCY-10 wt.% LSGM (BL91) composite electrolyte. XRD patterns showed that no reaction occurred between How to cite this article: Yu S, Wang Z, Yang L, et al. Enhancing the sinterability and electrical properties of BaZr 0.1 Ce 0.7 Y 0.2 O 3-δ proton-conducting ceramic electrolyte.

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

“…In order to reduce the effects of undesirable electron transport of PCMs on the output properties of protonic ceramic electrochemical cells, the latter should be operated at low- and intermediate-temperature ranges. This strategy is constantly developing due to the design of new electrolyte materials, 121,138–141 novel thin-film technologies, 32,142,143 and innovative highly active electrode systems. 144–148…”

Designing High Interfacial Conduction beyond Bulk via Engineering the Semiconductor–Ionic Heterostructure CeO2−δ/BaZr0.8Y0.2O3 for Superior Proton Conductive Fuel Cell and Water Electrolysis Applications

“…To probe the bulk and grain boundary effects, we assembled the fuel cell devices using the BZY pellets with and without sintering as the electrolyte, which was sandwiched between the two NCAL electrodes. The EIS curves obtained on BZY without and with sintering were compared as shown in Figure 2 h, where the results were modeled through an equivalent circuit (inset) mode of L s R b ( R gb CPE gb )( R ct CPE ct ) as reported previously, 27 , 28 where R b , R gb, and R ct stand for resistance of the bulk, the grain boundary, and the overall electrode, respectively. After high-temperature sintering of BZY, the resistance of the grain boundary increased from 0.59 to 2.95 Ω, also listed in Table S1 of the Supporting Information.…”

Investigating the effect of rGO on microstructural and electrical properties of La0.9Sr0.1Ga0.8Mg0.2O3 in intermediate temperature SOFCs

“…The data reported in the literature related to LaSrGaO 4 and LaSrGa 3 O 7 are attributed to high-resistance impurity phases, which are responsible for the degradation of the electrical properties of LSGM. 32,33 The effects of non-stoichiometric changes on phase purity and impurity phase content were determined by performing XRD in the range of 2 θ = 28–35° as shown in Fig. S2†, and with rGO content doped in LSGM, no significant structural changes or phase segregations were detected.…”

“…Literature studies also reveal the presence of secondary phases in published data. [32][33][34][35] However, Marrero-López et al 36 reported studies related to the total conductivity of LSGM and claimed that conductivity is not much affected by the presence of LaSrGa 3 O 7 and LaSrGaO 4 , even for samples containing considerable amounts of impurities. In each case, the sintering temperature chosen to synthesize the LSGM electrolyte was found to be 1450 C to get the minimum quantity of LaSrGa 3 O 7 , based on previous studies reported elsewhere.…”