scholarly journals Fabrication of α-alumina fibers by sol-gel and electrospinning of aluminum nitrate precursor solutions

2019 ◽  
Vol 12 ◽  
pp. 193-204 ◽  
Author(s):  
José Hafid Roque-Ruiz ◽  
Nahúm A. Medellín-Castillo ◽  
Simón Yobanny Reyes-López
Keyword(s):  
Sol Gel ◽  
Aluminum Nitrate ◽  
Nitrate Precursor ◽  
Alumina Fibers

Preparation of alumina fibers by sol-gel method

1988 ◽  
Vol 100 (1-3) ◽  
pp. 303-308 ◽  
Author(s):  
Toshio Maki ◽  
Sumio Sakka
Keyword(s):  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Alumina Fibers

scholarly journals Synthesis and Research of Alumina Ceramics Properties

2020 ◽  
Vol 8 (1) ◽  
pp. 20218102
Author(s):  
Evgeniy I. Frolov ◽  
Polina V. Notina ◽  
Sergey V. Zvonarev ◽  
Evgeniya A. Il'ina ◽  
Vyacheslav Yu. Churkin
Keyword(s):  
Optical Properties ◽  
Sol Gel ◽  
Aluminum Nitrate ◽  
Alumina Powder ◽  
Alumina Ceramics ◽  
Powder Synthesis ◽  
Gel Method ◽  
Varying Parameters ◽  
Luminescence Efficiency ◽  
F Center

The article describes in detail alumina powder synthesis by different methods at varying parameters. The technique of obtaining ceramics and the research of the optical properties for determining the materials with the maximum luminescence efficiency is presented. The concentration of the luminescence intrinsic centers and various defects differ for ceramics synthesized by different methods. It is determined that ceramics based on the powder synthesized by a sol-gel method has the maximum thermoluminescence intensity in the F-center peak, whereas for the peak of 360 °C it is obtained with the powder prepared by precipitation of aluminum nitrate with a PEG‑20000 stabilizer.

A novel sol–gel synthetic route to alumina nanofibers via aluminum nitrate and hexamethylenetetramine

2007 ◽  
Vol 61 (28) ◽  
pp. 5074-5077 ◽  
Author(s):  
Jianqiang Wang ◽  
Youzhen Wang ◽  
Minghua Qiao ◽  
Songhai Xie ◽  
Kangnian Fan
Keyword(s):  
Sol Gel ◽  
Aluminum Nitrate ◽  
Synthetic Route ◽  
Alumina Nanofibers

Microstructure and High Temperature Properties of 85% Al2O3-15% SiO2 Fibers

1994 ◽  
Vol 350 ◽  
Author(s):  
D. M. Wilson ◽  
S. L. Lieder ◽  
D. C. Lueneburg
Keyword(s):  
Tensile Strength ◽  
High Temperature ◽  
Sol Gel ◽  
Two Phase ◽  
Single Filament ◽  
Polycrystalline Alumina ◽  
Creep Properties ◽  
High Temperature Properties ◽  
Alumina Fibers ◽  
High Temperature Tensile

AbstractA new sol/gel fiber which exhibits exceptional high temperature properties was recently developed at 3M. This fiber has the composition 85% Al2O3-15% SiO2 (85A-15S). High temperature tensile strength and creep properties were measured in the temperature range 1000°C – 1300°C. The creep rate for the 85A-15S fibers was three orders of magnitude less than single phase polycrystalline alumina fibers such as Nextel 610, and 90% of room tensile strength was retained at 1250°C. These exceptional high temperature properties were attributed to a unique, two-phase microstructure consisting of globular and elongated grains of a-Al2O3 and mullite (3Al2O3-2SiO2). The room temperature single filament strength of the 85% Al2O3-15% SiO2 fibers was 2130 MPa, and the elastic modulus was 260 GPa.

scholarly journals Preparation of Beta-Alumina Fibers by Sol-Gel Method

1989 ◽  
Vol 97 (1130) ◽  
pp. 1082-1086 ◽  
Author(s):  
Toshio MAKI ◽  
Sumio SAKKA
Keyword(s):  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method ◽  
Alumina Fibers ◽  
Beta Alumina

Sol-Gel Based Extrusion of Alumina Fibers

2006 ◽  
Vol 21 (3) ◽  
pp. 319-323 ◽  
Author(s):  
J. Chandradass ◽  
M. Balasubramanian
Keyword(s):  
Sol Gel ◽  
Alumina Fibers

LIMITATIONS OF THE SOL/GEL PROCESS WITH ALUMINUM NITRATE

1993 ◽  
Vol 11 (1-2) ◽  
pp. 1-10 ◽  
Author(s):  
STIG E. FRIBERG ◽  
CHING-CHANG YANG
Keyword(s):  
Sol Gel ◽  
Aluminum Nitrate ◽  
Sol Gel Process

scholarly journals Enhanced electrochemical performance of RuO2 doped LiNi1/3Mn1/3Co1/3O2 cathode material for Lithium-ion battery

2021 ◽  
Author(s):  
K. Kalaiselvi ◽  
S. Premlatha ◽  
M. Raju ◽  
Paruthimal Kalaignan Guruvaiah
Keyword(s):  
Electrochemical Performance ◽  
Cathode Material ◽  
Lithium Ion Batteries ◽  
Electrode Materials ◽  
Electrochemical Impedance ◽  
Sol Gel ◽  
Lithium Ion ◽  
X Ray Diffraction ◽  
High Discharge Capacity ◽  
Nitrate Precursor

Abstract LiNi1/3Mn1/3Co1/3O2 as a promising cathode material for lithium-ion batteries was synthesized by a sol-gel method using nitrate precursor calcined at 800°C for 10 hours. The crystallite nature of samples is confirmed from X-ray diffraction analysis. SEM and TEM analyses were used to investigate the surface morphology of the prepared samples. It was found that, highly crystalline polyhedral RuO2 nanoparticles are well doped on the surface of pristine LiNi1/3Mn1/3Co1/3O2 with a size of about approximately 200 nm. The chemical composition of the prepared samples was characterized by EDX and XPS analyses. The electrochemical performance of the proposed material was studied by cyclic voltammetry and charge/discharge analyses. The electrode kinetics of the samples was studied by electrochemical impedance spectroscopy. The developed RuO2 doping may provide an effective strategy to design and synthesize the advanced electrode materials for lithium ion batteries. The doping strategy has dramatically increased the capacity retention from 74 % to 90% with a high discharge capacity of 251.2 mAhg− 1. 3 % RuO2-doped LiNi1/3Mn1/3Co1/3O2 cathode materials have showed the similar characteristics of two potential plateaus obtained at 2.8 and 4.2 V compared with un doped electrode cathode material. These results revealed the enhanced performance of RuO2- doped LiNi1/3Mn1/3Co1/3O2 during insertion and extraction of lithium ions compared to pristine material.

Sign in / Sign up

Export Citation Format

Share Document