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Barium-barium-tantalum oxide solid electrolyte and preparation method thereof
The invention discloses a barium-barium-tantalum oxide solid electrolyte and a preparation method thereof. The molecular formula of the electrolyte is Ba<1.5>Ba <0.5+x>Ta<1-x>O<4.5-delta>. The preparation method comprises the following steps of: (1) mixing barium carbonate powder and tantalum oxide powder according to a molar ratio (Ba: Ta) of (2+x): (1-x); (2) taking water or absolute ethyl alcohol as a ball milling medium, and drying the mixed powder after ball milling; (3) carrying out compression molding, then roasting at 900-1300 DEG C for 1-10 hours, and carrying out cooling along with the furnace; and (4) grinding the roasted material, carrying out secondary compression molding, calcining at 1000-1500 DEG C for 1-10 hours, and carrying out cooling along with the furnace. The oxygenvacancy lattice defect is generated by changing the stoichiometric ratio of the Ba element at the B' position to the Ta element at the B'' position, so that the formed electrolyte material has good conductivity under a high-temperature condition, and meanwhile, has a relatively high proton transference number; and the material is applied to sensor equipment, and is helpful for improving the accuracy of hydrogen measurement in a hydrogen sensor.
一种钡钡钽氧化物固体电解质及其制备方法，电解质分子式为Ba1.5Ba0.5+xTa1‑xO4.5‑δ；制备方法为：(1)碳酸钡粉体和氧化钽粉体按摩尔比Ba:Ta＝(2+x):(1‑x)混合；(2)以水或无水乙醇为球磨介质，将混合粉体球磨后烘干；(3)压制成型，然后在900～1300℃焙烧1～10h，随炉冷却；(4)将焙烧物料研磨后二次压制成型，1000～1500℃煅烧1～10h，随炉冷却。本发明通过改变B′位Ba元素与B″位Ta元素的化学计量比产生氧空位晶格缺陷，使形成的电解质材料在高温条件下具有良好的电导率，同时具有较高质子迁移数；该材料应用于传感器设备中，有助于提高氢传感器中测氢的准确性。
Barium-barium-tantalum oxide solid electrolyte and preparation method thereof
The invention discloses a barium-barium-tantalum oxide solid electrolyte and a preparation method thereof. The molecular formula of the electrolyte is Ba<1.5>Ba <0.5+x>Ta<1-x>O<4.5-delta>. The preparation method comprises the following steps of: (1) mixing barium carbonate powder and tantalum oxide powder according to a molar ratio (Ba: Ta) of (2+x): (1-x); (2) taking water or absolute ethyl alcohol as a ball milling medium, and drying the mixed powder after ball milling; (3) carrying out compression molding, then roasting at 900-1300 DEG C for 1-10 hours, and carrying out cooling along with the furnace; and (4) grinding the roasted material, carrying out secondary compression molding, calcining at 1000-1500 DEG C for 1-10 hours, and carrying out cooling along with the furnace. The oxygenvacancy lattice defect is generated by changing the stoichiometric ratio of the Ba element at the B' position to the Ta element at the B'' position, so that the formed electrolyte material has good conductivity under a high-temperature condition, and meanwhile, has a relatively high proton transference number; and the material is applied to sensor equipment, and is helpful for improving the accuracy of hydrogen measurement in a hydrogen sensor.
一种钡钡钽氧化物固体电解质及其制备方法，电解质分子式为Ba1.5Ba0.5+xTa1‑xO4.5‑δ；制备方法为：(1)碳酸钡粉体和氧化钽粉体按摩尔比Ba:Ta＝(2+x):(1‑x)混合；(2)以水或无水乙醇为球磨介质，将混合粉体球磨后烘干；(3)压制成型，然后在900～1300℃焙烧1～10h，随炉冷却；(4)将焙烧物料研磨后二次压制成型，1000～1500℃煅烧1～10h，随炉冷却。本发明通过改变B′位Ba元素与B″位Ta元素的化学计量比产生氧空位晶格缺陷，使形成的电解质材料在高温条件下具有良好的电导率，同时具有较高质子迁移数；该材料应用于传感器设备中，有助于提高氢传感器中测氢的准确性。
Barium-barium-tantalum oxide solid electrolyte and preparation method thereof
钡钡钽氧化物固体电解质及其制备方法
LI YING (author) / WANG ZEZHONG (author) / HUANG WENLONG (author)
2021-01-15
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
/
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
/
G01N
Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften
,
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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