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Double-doped BaCeO3-based proton conduction electrolyte material as well as preparation and application thereof

A technology of electrolyte materials and matrix protons, applied in electrolytes, circuits, fuel cells, etc., can solve problems such as poor sintering performance and poor chemical stability, and achieve improved sintering performance, sintering performance and proton conductivity, and proton conductivity. Effect

Pending Publication Date: 2020-01-17
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the BaCeO in the prior art 3 The base electrolyte material has disadvantages and deficiencies such as poor chemical stability and poor sintering performance. The primary purpose of the present invention is a double-doped BaCeO 3 Matrix Proton Conducting Electrolyte Materials

Method used

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  • Double-doped BaCeO3-based proton conduction electrolyte material as well as preparation and application thereof
  • Double-doped BaCeO3-based proton conduction electrolyte material as well as preparation and application thereof
  • Double-doped BaCeO3-based proton conduction electrolyte material as well as preparation and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] (1) According to double-doped BaCeO 3 The molecular formula of the proton-conducting electrolyte material is Ba 0.95 K 0.05 Ce 0.8 Zr 0.1 SM 0.1 o 3 The stoichiometric ratio weighs C 4 h 6 o 4 Ba(99.9%), KOH(99.9%), CeO 2 (99.9%), ZrO 2 (99.9%), Sm 2 o 3 (99.9%), and then using absolute ethanol as a dispersion medium, place the above-mentioned raw materials and grinding balls in a planetary ball mill for 12 hours at a speed of 300 rpm to obtain slurry 1;

[0045] (2) Place the slurry 1 prepared in step (1) in a vacuum drying oven to dry, and grind and sieve to obtain primary powder; then place the powder in a muffle furnace and heat up at a rate of 5°C / min Heating to 900°C, heat preservation and calcination for 8 hours to obtain white electrolyte powder, which is the primary powder;

[0046] (3) adding antimony tin oxide (ATO) as a sintering additive to the primary powder obtained in step (2) to obtain a mixed powder, wherein the consumption of antimony tin...

Embodiment 2

[0050] (1) According to double-doped BaCeO 3 The molecular formula of the proton-conducting electrolyte material is Ba 0.9 K 0.1 Ce 0.7 Zr 0.15 SM 0.15 o 3 The stoichiometric ratio weighs C 4 h 6 o 4 Ba(99.9%), KOH(99.9%), CeO 2 (99.9%), ZrO 2 (99.9%), Sm 2 o 3 (99.9%), and then using absolute ethanol as a dispersion medium, place the above-mentioned raw materials and grinding balls in a planetary ball mill for 12 hours at a speed of 300 rpm to obtain slurry 1;

[0051] (2) Place the slurry 1 prepared in step (1) in a vacuum drying oven to dry, and grind and sieve to obtain primary powder; then place the powder in a muffle furnace and heat up at a rate of 5°C / min Heating to 900°C, heat preservation and calcination for 8 hours to obtain white electrolyte powder, which is the primary powder;

[0052] (3) Add antimony tin oxide (ATO) as a sintering additive to the primary powder obtained in step (2) to obtain a mixed powder, wherein the consumption of antimony tin ox...

Embodiment 3

[0056] (1) According to double-doped BaCeO 3 The molecular formula of the proton-conducting electrolyte material is Ba 0.9 K 0.1 Ce 0.7 Zr 0.15 SM 0.15 o 3 The stoichiometric ratio weighs C 4 h 6 o 4 Ba(99.9%), KOH(99.9%), CeO 2 (99.9%), ZrO 2 (99.9%), Sm 2 o 3 (99.9%), and then using absolute ethanol as a dispersion medium, place the above-mentioned raw materials and grinding balls in a planetary ball mill for 12 hours at a speed of 300 rpm to obtain slurry 1;

[0057] (2) Place the slurry 1 prepared in step (1) in a vacuum drying oven to dry, and grind and sieve to obtain primary powder; then place the powder in a muffle furnace and heat up at a rate of 5°C / min Heating to 1200°C, heat preservation and calcination for 8 hours to obtain white electrolyte powder, which is the primary powder;

[0058] (3) Add antimony tin oxide (ATO) as a sintering additive to the primary powder obtained in step (2) to obtain a mixed powder, wherein the consumption of antimony tin o...

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Abstract

The invention relates to the technical field of fuel cell electrolytes, in particular to a double-doped BaCeO3-based proton conduction electrolyte material as well as preparation and application thereof. The double-doped BaCeO3-based proton conduction electrolyte material is prepared by doping different elements to Ba and Ce sites in a BaCeO3 material and taking the nano antimony tin oxide powderas an additive, wherein the Ba site in the BaCeO3 material is doped with K, the Ce site in the BaCeO3 material is doped with Zr and Sm at the same time, so that the chemical stability problem of the BaCeO3 electrolyte material in an acid gas and an H2O environments can be solved, and the sintering performance of the BaCeO3 electrolyte material is remarkably improved. In addition, the ATO is used as an additive, so that the sintering performance and the proton conduction performance can be further improved.

Description

technical field [0001] The invention relates to the technical field of fuel cell electrolytes, in particular to a double-doped BaCeO 3 Proton-conducting electrolyte materials and their preparation and application. Background technique [0002] With the rapid development of the world economy, human demand for energy continues to increase. Since the Industrial Revolution in the 18th century, fossil fuels, such as coal, oil, and natural gas, have provided reliable sources of energy for human society. However, this traditional energy utilization method, that is, the method of obtaining heat energy by burning fossil fuels and then converting it into mechanical energy or electrical energy, can only achieve a conversion efficiency of up to 35%, which causes a great waste of energy. With the emergence of environmental problems and energy shortages, human beings have begun to look for and vigorously develop renewable energy sources, such as solar energy, nuclear energy, wind energy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/126H01M8/1016
CPCH01M8/1016H01M8/126H01M2300/0091H01M2300/0071H01M2300/0074Y02E60/50
Inventor 姚玉婷曹晓国张晓华
Owner GUANGDONG UNIV OF TECH
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