一步水热合成法制备Li0.33La0.56TiO3粉体材料

null 朱焱麟; null 彭晓丽; null 张晓琨; Yong 向勇; null 夏元华

doi:10.14106/j.cnki.1001-2028.2020.0015

一步水热合成法制备Li_0.33La_0.56TiO₃粉体材料

Translated title of the contribution: One-pot hydrothermal synthesis of perovskite-type Li_0.33La_0.56TiO₃ powders

朱焱麟, 彭晓丽, 张晓琨, 向勇^*, 夏元华

^*Corresponding author for this work

Research output: Journal Publications › Journal Article (refereed) › peer-review

Abstract

通过一步水热合成法制备了具有钙钛矿结构的锂镧钛氧 (Li_0.33La_0.56TiO₃，LLTO) 粉体材料。研究了溶剂环境和反应温度对产物物相与晶粒粒径的调控机制。结果表明，以4 mol/L氢氧化钾 (KOH) 水溶液作为溶剂，以260℃作为反应温度，得到的最终产物为理想钙钛矿结构，晶粒平均尺寸为568 nm且分布较为均匀。利用粉末中子衍射的方法研究了上述产物在高温下的物相稳定性。结果表明，LLTO粉体材料在室温至600℃温度范围内，保持钙钛矿结构不变，晶胞参数增大，样品压片后锂离子电导率为3.1×10^~5 S/cm。实验结果表明，一步水热合成方法可以有效合成具有钙钛矿结构的LLTO粉体材料，在高温全固态锂电池领域具备较高的应用潜力。

Perovskite-type lithium lanthanum titanate (LLTO) powders were synthesized by one-pot hydrothermal synthesis. The effects of solvents and reaction temperatures on the phase and crystalline size of LLTO were studied. At 260 ℃, pure phase LLTO was obtained in KOH (4 mol/L) solution with average particle size of 568 nm. Powder neutron diffraction was used to study the phase stability of LLTO from 25 ℃ to 600 ℃. The results show that the phase of LLTO is stable at high temperatures. The crystal unit cell parameters of LLTO is increased at higher temperature. The lithium ionic conductivity of LLZO is 3.1×10^-5 S/cm. The one-pot hydrothermal synthesis is efficient for synthesizing perovskite-type LLTO powders, which shows great potential for industry application.

Translated title of the contribution	One-pot hydrothermal synthesis of perovskite-type Li_0.33La_0.56TiO₃ powders
Original language	Chinese (Simplified)
Pages (from-to)	47-52
Number of pages	6
Journal	电子元件与材料
Volume	39
Issue number	7
DOIs	https://doi.org/10.14106/j.cnki.1001-2028.2020.0015
Publication status	Published - 5 Jul 2020
Externally published	Yes

Bibliographical note

基金 : 国家自然科学基金 (21905040)、中央高校基本科研业务费专项资金 (ZYGX2019Z009)、四川省科技支撑计划 (2018JY0554)。

Keywords

锂镧钛氧
钙钛矿结构
水热合成法
X射线衍射
中子衍射
lithium lanthanum titanate oxide
perovskite structure
hydrothermal synthesis
X-ray diffraction
neutron diffraction

Access to Document

10.14106/j.cnki.1001-2028.2020.0015

Cite this

@article{6d4d8dad074b4d30b96fead2a8a077b8,

title = "一步水热合成法制备Li0.33La0.56TiO3粉体材料",

abstract = "通过一步水热合成法制备了具有钙钛矿结构的锂镧钛氧 (Li0.33La0.56TiO3，LLTO) 粉体材料。研究了溶剂环境和反应温度对产物物相与晶粒粒径的调控机制。结果表明，以4 mol/L氢氧化钾 (KOH) 水溶液作为溶剂，以260℃作为反应温度，得到的最终产物为理想钙钛矿结构，晶粒平均尺寸为568 nm且分布较为均匀。利用粉末中子衍射的方法研究了上述产物在高温下的物相稳定性。结果表明，LLTO粉体材料在室温至600℃温度范围内，保持钙钛矿结构不变，晶胞参数增大，样品压片后锂离子电导率为3.1×10~5 S/cm。实验结果表明，一步水热合成方法可以有效合成具有钙钛矿结构的LLTO粉体材料，在高温全固态锂电池领域具备较高的应用潜力。Perovskite-type lithium lanthanum titanate (LLTO) powders were synthesized by one-pot hydrothermal synthesis. The effects of solvents and reaction temperatures on the phase and crystalline size of LLTO were studied. At 260 ℃, pure phase LLTO was obtained in KOH (4 mol/L) solution with average particle size of 568 nm. Powder neutron diffraction was used to study the phase stability of LLTO from 25 ℃ to 600 ℃. The results show that the phase of LLTO is stable at high temperatures. The crystal unit cell parameters of LLTO is increased at higher temperature. The lithium ionic conductivity of LLZO is 3.1×10-5 S/cm. The one-pot hydrothermal synthesis is efficient for synthesizing perovskite-type LLTO powders, which shows great potential for industry application.",

keywords = "锂镧钛氧, 钙钛矿结构, 水热合成法, X射线衍射, 中子衍射, lithium lanthanum titanate oxide, perovskite structure, hydrothermal synthesis, X-ray diffraction, neutron diffraction",

author = "朱焱麟 and 彭晓丽 and 张晓琨 and 向勇 and 夏元华",

note = "基金 : 国家自然科学基金 (21905040)、中央高校基本科研业务费专项资金 (ZYGX2019Z009)、四川省科技支撑计划 (2018JY0554)。",

year = "2020",

month = jul,

day = "5",

doi = "10.14106/j.cnki.1001-2028.2020.0015",

language = "Chinese (Simplified)",

volume = "39",

pages = "47--52",

journal = "电子元件与材料",

issn = "1001-2028",

number = "7",

}

TY - JOUR

T1 - 一步水热合成法制备Li0.33La0.56TiO3粉体材料

AU - 朱焱麟, null

AU - 彭晓丽, null

AU - 张晓琨, null

AU - 向勇, null

AU - 夏元华, null

N1 - 基金 : 国家自然科学基金 (21905040)、中央高校基本科研业务费专项资金 (ZYGX2019Z009)、四川省科技支撑计划 (2018JY0554)。

PY - 2020/7/5

Y1 - 2020/7/5

N2 - 通过一步水热合成法制备了具有钙钛矿结构的锂镧钛氧 (Li0.33La0.56TiO3，LLTO) 粉体材料。研究了溶剂环境和反应温度对产物物相与晶粒粒径的调控机制。结果表明，以4 mol/L氢氧化钾 (KOH) 水溶液作为溶剂，以260℃作为反应温度，得到的最终产物为理想钙钛矿结构，晶粒平均尺寸为568 nm且分布较为均匀。利用粉末中子衍射的方法研究了上述产物在高温下的物相稳定性。结果表明，LLTO粉体材料在室温至600℃温度范围内，保持钙钛矿结构不变，晶胞参数增大，样品压片后锂离子电导率为3.1×10~5 S/cm。实验结果表明，一步水热合成方法可以有效合成具有钙钛矿结构的LLTO粉体材料，在高温全固态锂电池领域具备较高的应用潜力。Perovskite-type lithium lanthanum titanate (LLTO) powders were synthesized by one-pot hydrothermal synthesis. The effects of solvents and reaction temperatures on the phase and crystalline size of LLTO were studied. At 260 ℃, pure phase LLTO was obtained in KOH (4 mol/L) solution with average particle size of 568 nm. Powder neutron diffraction was used to study the phase stability of LLTO from 25 ℃ to 600 ℃. The results show that the phase of LLTO is stable at high temperatures. The crystal unit cell parameters of LLTO is increased at higher temperature. The lithium ionic conductivity of LLZO is 3.1×10-5 S/cm. The one-pot hydrothermal synthesis is efficient for synthesizing perovskite-type LLTO powders, which shows great potential for industry application.

AB - 通过一步水热合成法制备了具有钙钛矿结构的锂镧钛氧 (Li0.33La0.56TiO3，LLTO) 粉体材料。研究了溶剂环境和反应温度对产物物相与晶粒粒径的调控机制。结果表明，以4 mol/L氢氧化钾 (KOH) 水溶液作为溶剂，以260℃作为反应温度，得到的最终产物为理想钙钛矿结构，晶粒平均尺寸为568 nm且分布较为均匀。利用粉末中子衍射的方法研究了上述产物在高温下的物相稳定性。结果表明，LLTO粉体材料在室温至600℃温度范围内，保持钙钛矿结构不变，晶胞参数增大，样品压片后锂离子电导率为3.1×10~5 S/cm。实验结果表明，一步水热合成方法可以有效合成具有钙钛矿结构的LLTO粉体材料，在高温全固态锂电池领域具备较高的应用潜力。Perovskite-type lithium lanthanum titanate (LLTO) powders were synthesized by one-pot hydrothermal synthesis. The effects of solvents and reaction temperatures on the phase and crystalline size of LLTO were studied. At 260 ℃, pure phase LLTO was obtained in KOH (4 mol/L) solution with average particle size of 568 nm. Powder neutron diffraction was used to study the phase stability of LLTO from 25 ℃ to 600 ℃. The results show that the phase of LLTO is stable at high temperatures. The crystal unit cell parameters of LLTO is increased at higher temperature. The lithium ionic conductivity of LLZO is 3.1×10-5 S/cm. The one-pot hydrothermal synthesis is efficient for synthesizing perovskite-type LLTO powders, which shows great potential for industry application.

KW - 锂镧钛氧

KW - 钙钛矿结构

KW - 水热合成法

KW - X射线衍射

KW - 中子衍射

KW - lithium lanthanum titanate oxide

KW - perovskite structure

KW - hydrothermal synthesis

KW - X-ray diffraction

KW - neutron diffraction

U2 - 10.14106/j.cnki.1001-2028.2020.0015

DO - 10.14106/j.cnki.1001-2028.2020.0015

M3 - Journal Article (refereed)

SN - 1001-2028

VL - 39

SP - 47

EP - 52

JO - 电子元件与材料

JF - 电子元件与材料

IS - 7

ER -