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A kind of trace zirconium dioxide added st-nbt energy storage ceramic and preparation method thereof

A zirconium dioxide and energy storage technology is applied in the field of adding trace zirconium dioxide to ST-NBT energy storage ceramics and its preparation, which can solve the problems such as the energy storage density is not significantly improved, and achieves low cost, simple preparation process, high yield effect

Active Publication Date: 2021-06-25
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the energy storage density has not been significantly improved

Method used

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  • A kind of trace zirconium dioxide added st-nbt energy storage ceramic and preparation method thereof
  • A kind of trace zirconium dioxide added st-nbt energy storage ceramic and preparation method thereof
  • A kind of trace zirconium dioxide added st-nbt energy storage ceramic and preparation method thereof

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Experimental program
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Effect test

preparation example Construction

[0029] A preparation method for adding ST-NBT energy storage ceramics with a trace amount of zirconia, comprising the following steps:

[0030] Step 1: According to the stoichiometric formula (1-x) (0.6SrTiO 3 -0.4Na 0.5 Bi 0.5 TiO 3 )-xZrO 2 , x=0.1~0.6mol%, take SrTiO 3 Powder, Na 0.5 Bi 0.5 TiO 3 Powder and ZrO 2 The powder is mixed evenly to form a complete ingredient, SrTiO 3 The preparation steps of the powder include: first weigh the SrCO2 according to the molar ratio of 1:1 3 and TiO 2 Mix to form mixture A; then take mixture A, zirconium balls and deionized water, mix them according to the mass ratio of 1:2:(0.8~1.5), then perform ball milling, drying and briquetting in sequence, and finally keep warm at 1150~1180℃ 3 to 4 hours to obtain pure phase SrTiO 3 Powder; Na 0.5 Bi 0.5 TiO 3 The preparation steps of the powder include: first weigh Bi according to the molar ratio of 1:1:4 2 o 3 、Na 2 CO 3 and TiO 2 Mix to form mixture B; then take mixture B...

Embodiment 1

[0036] In this example ZrO 2 Add 0.6SrTiO 3 -0.4Na 0.5 Bi 0.5 TiO 3 Energy storage ceramics whose formula is (1-x)(0.6SrTiO 3 -0.4Na 0.5 Bi 0.5 TiO 3 )-xZrO 2 , where x=0.1 mol%.

[0037] Step 1: Preparation of pure phase SrTiO 3 and pure phase Na 0.5 Bi 0.5 TiO 3 spare. Weigh SrCO according to the molar ratio of 1:1 3 and TiO 2 Mix to form mixture A; weigh Bi according to the molar ratio 1:1:4 2 o 3 , Na 2 CO 3 and TiO 2 Mix to form Mixture B. SrCO 3 , Bi 2 o 3 , Na 2 CO 3 and TiO 2 The purity is above 99.0%.

[0038] Step 2: Mix the mixtures A and B with zirconium balls and deionized water respectively according to the mass ratio of 1:2:0.8 and 1:2:1, then use a planetary ball mill for 18 hours, and then dry at 85°C for 26 hours 1. After briquetting, put them in a box-type furnace for 4 hours at 1150° C. and 4.5 hours at 840° C. to form mixtures A and B presynthetic materials respectively for later use.

[0039] Step 3: pre-synthesizing material ...

Embodiment 2

[0045] In this example ZrO 2 Add 0.6SrTiO 3 -0.4Na 0.5 Bi 0.5 TiO 3 Energy storage ceramics whose formula is (1-x)(0.6SrTiO 3 -0.4Na 0.5 Bi 0.5 TiO 3 )-xZrO 2 , where x=0.2 mol%.

[0046] Step 1: Preparation of pure phase SrTiO 3 and pure phase Na 0.5 Bi 0.5 TiO 3 spare. Weigh SrCO according to the molar ratio of 1:1 3 and TiO 2 Mix to form mixture A; weigh Bi according to the molar ratio 1:1:4 2 o 3 , Na 2 CO 3 and TiO 2 Mix to form Mixture B. SrCO 3 , Bi 2 o 3 , Na 2 CO 3 and TiO 2 The purity is above 99.0%.

[0047] Step 2: Mix mixtures A and B with zirconium balls and deionized water respectively, according to the mass ratio of 1:2:1.1 and 1:2:1.5, and then use a planetary ball mill for 20 hours, then dry at 90°C for 25 hours 1. After briquetting, place in a box-type furnace for 3.5 hours at 1160° C. and 4.5 hours at 840° C. to form mixtures A and B presynthetic materials respectively for later use.

[0048] Step 3: pre-synthesized material wit...

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Abstract

The invention discloses a ST-NBT energy storage ceramic added with a trace amount of zirconium dioxide and a preparation method thereof. According to the stoichiometric formula, the raw materials are weighed and mixed evenly to form a complete batch; the complete batch is sequentially ball milled, dried, ground and sieved, Form the sieve material; press the sieve material into a sample, and sinter the sample; evenly coat the silver electrode paste on the front and back of the sintered sample, sinter to obtain a trace amount of zirconia and add ST‑NBT energy storage ceramics. The energy storage ceramic prepared by the method of the invention has high energy storage density, is environmentally friendly, and may become an important candidate material for replacing lead-based energy storage capacitor materials.

Description

technical field [0001] The invention relates to the field of ceramic capacitor materials, in particular to a ST-NBT energy storage ceramic added with a trace amount of zirconia and a preparation method thereof. Background technique [0002] Currently electrical energy storage plays an important role in the field of mobility, electronic devices, hybrid electric vehicles and pulsed power technology etc. [1,2]. ([1]G.Z.Zhang,D.Y.Zhu,X.S.Zhang,L.Zhang,J.Q.Yi,B.Xie,Y.K.Zeng,Q.Li,Q.Wang,S.L.Jiang,High-energy storage performance of(Pb 0.87 Ba 0.1 La 0.02 )(Zr 0.68 sn 0.24 Ti 0.08 )O 3 antiferroelectric ceramics fabricated by the hot-press sintering method, J.Am.Ceram.Soc.98(2015)1175–1181.[2] G.R.Love, Energy-storage in ceramic dielectrics, J.Am.Ceram.Soc.73(1990 )323–328.) For practical applications, energy storage-based devices can operate under various conditions with temperature fluctuations. Therefore, it is highly desirable that energy storage materials can work effec...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/47C04B35/622C04B41/88
CPCC04B35/47C04B35/622C04B41/5116C04B41/88C04B2235/3201C04B2235/3244C04B2235/3298C04B2235/6562C04B2235/6565C04B2235/6567C04B2235/661C04B41/4539C04B41/0072
Inventor 蒲永平崔晨薇
Owner SHAANXI UNIV OF SCI & TECH
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