scholarly journals Investigation of Sodium Manganese Oxide Nanowires Synthesized by Hydrothermal Method for Alkaline Ion Battery

2014 ◽  
Vol 24 (3) ◽  
pp. 233
Author(s):  
Ta Anh Tan ◽  
Do Thi Phuong ◽  
Nguyen Thi Tu Oanh ◽  
Do Xuan Mai ◽  
Hoang Vu Chung ◽  
...  
Keyword(s):  
Cyclic Voltammetry ◽  
Hydrothermal Synthesis ◽  
Electrochemical Properties ◽  
Manganese Oxide ◽  
Hydrothermal Method ◽  
Cathode Materials ◽  
Promising Material ◽  
Morphological Observation ◽  
Oxide Nanowires ◽  
Naoh Solution

Sodium Manganese Oxide (NaxMnO2) has attracted much attention as cathode materials for alkaline ion battery due to the ability of fast charge and discharge ion Na+, in particular in nanoscale. We report on the synthesis of NaxMnO2 nanowires via hydrothermal synthesis route from Mn2O3 and NaOH solution. The morphological observation indicates that the obtained Na0.44MnO2 nanowires with diameters of about 20-30 nm, length up to several micrometers were formed by this process. The electrochemical properties of fabricated materials were investigated by means of cyclic voltammetry technique and show that Sodium Manganese Oxide (NaxMnO2) is a promising material in the field of research and fabrication alkaline ion battery.

Hydrothermal Synthesis of Layered Sodium Manganese Oxide Nanowires and Their Electrochemical Performance

2010 ◽  
Vol 10 (11) ◽  
pp. 7378-7381 ◽  
Author(s):  
Xian-Ming Liu ◽  
Zhen-Dong Huang ◽  
Sei-Woon Oh ◽  
Peng-Cheng Ma ◽  
Jun Ma ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Electrochemical Performance ◽  
Manganese Oxide ◽  
Oxide Nanowires

Hydrothermal Synthesis of LiMnO2 with Orthorhombic Structure as Cathode Materials

2013 ◽  
Vol 717 ◽  
pp. 33-36
Author(s):  
Hui Zhong Hu ◽  
Bao Wu Pan ◽  
Xiao Jian Hao
Keyword(s):  
Hydrothermal Synthesis ◽  
Hydrothermal Method ◽  
Cathode Materials ◽  
Orthorhombic Structure ◽  
Hydrothermal Temperature

o-LiMnO2 was successfully synthesized by the hydrothermal method at Li+/Mn3+=4:1. The influence of Li+/Mn3+ ratios, hydrothermal temperature and time to the purity of o-LiMnO2 was researched. The particles as-prepared were well-dispersed and near-spherical.

scholarly journals B-site modified photoferroic Cr3+-doped barium titanate nanoparticles: microwave-assisted hydrothermal synthesis, photocatalytic and electrochemical properties

RSC Advances ◽  
2019 ◽  
Vol 9 (36) ◽  
pp. 20806-20817 ◽  
Author(s):  
I. C. Amaechi ◽  
G. Kolhatkar ◽  
A. Hadj Youssef ◽  
D. Rawach ◽  
S. Sun ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Barium Titanate ◽  
Electrochemical Properties ◽  
Hydrothermal Method ◽  
Microwave Assisted ◽  
Cr Content ◽  
Doped Barium Titanate ◽  
Barium Titanate Nanoparticles

We report on the synthesis of photoferroic Cr3+-doped BaTiO3 nanoparticles with nominal Cr content ranging from 2–8 mol% by a microwave-assisted hydrothermal method.

The effect of temperature on morphology and electrochemical properties of NiCo2S4 by hydrothermal synthesis

2018 ◽  
Vol 11 (03) ◽  
pp. 1850063
Author(s):  
Yanwei Sui ◽  
Haihua Hu ◽  
Yuanming Zhang ◽  
Bin Tang ◽  
Jiqiu Qi ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Electrochemical Properties ◽  
Specific Capacitance ◽  
Hydrothermal Method ◽  
Current Density ◽  
Level Structure ◽  
Hydrothermal Process ◽  
Effect Of Temperature ◽  
Second Step ◽  
Carbon Sphere

The hydrothermal method, using the template is a conspicuous way to change the morphology of the product, so it is used widely in many reports. The effect of temperature on morphology of NiCo2S4 by hydrothermal synthesis and its electrochemical properties is distinct as high-performance electrode materials for supercapacitors. With the help of the template (carbon sphere), different morphologies of NiCo2S4 under 90[Formula: see text]C, 120[Formula: see text]C and 180[Formula: see text]C were obtained. They have different properties after electrochemical analysis. In order to build a hierarchical multi-level structure, two-step vulcanization was carried out at each temperature, resulting in the difference in the morphology and performance of the six sample of electrodes. The obtained NiCo2S4 electrodes exhibit 1000[Formula: see text]F[Formula: see text]g[Formula: see text] at the current density of 1[Formula: see text]A[Formula: see text]g[Formula: see text] in the second-step of the hydrothermal process under 120[Formula: see text]C, which is superior to the microblocks NiCo2S4 electrode (90[Formula: see text]C, 888[Formula: see text]F[Formula: see text]g[Formula: see text] at the current density of 1[Formula: see text]A[Formula: see text]g[Formula: see text]) and microparticles NiCo2S4 electrode (180[Formula: see text]C, 574[Formula: see text]F[Formula: see text]g[Formula: see text] at the same current density) in the second-step hydrothermal, which shows a high-rate capability (640[Formula: see text]F[Formula: see text]g[Formula: see text] at 20[Formula: see text]A[Formula: see text]g[Formula: see text]). The obtained nanoparticles NiCo2S4 under 180[Formula: see text]C in the first-step hydrothermal electrode had an excellent cycle retention rate (89.7%), although its specific capacitance was lower. At the same time, the specific capacitance of these sample electrodes obtained in the second-step hydrothermal process is superior to those from the first-step. It was mainly attributed to the fact that temperature can influence the morphology by controlling ion exchange. And our experiment aims to use the hydrothermal method and the template method to find a more suitable temperature range to provide more ideas.

Hydrothermal synthesis and electrochemical properties of α-MoO3 nanobelts used as cathode materials for Li-ion batteries

2012 ◽  
Vol 107 (1) ◽  
pp. 249-254 ◽  
Author(s):  
Anukorn Phuruangrat ◽  
Jun Song Chen ◽  
Xiong Wen Lou ◽  
Oranuch Yayapao ◽  
Somchai Thongtem ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Electrochemical Properties ◽  
Cathode Materials ◽  
Li Ion Batteries ◽  
Li Ion

Synthesis of porous peanut-like LiNi0.5Mn1.5O4 cathode materials through an ethylene glycol-assisted hydrothermal method using urea as a precipitant

2015 ◽  
Vol 3 (38) ◽  
pp. 19497-19506 ◽  
Author(s):  
Li Wang ◽  
Guijuan Liu ◽  
Wei Wu ◽  
Dan Chen ◽  
Guangchuan Liang
Keyword(s):  
Ethylene Glycol ◽  
Cathode Material ◽  
Electrochemical Properties ◽  
Hydrothermal Method ◽  
Formation Mechanism ◽  
Cathode Materials

The porous peanut-like LiNi0.5Mn1.5O4 cathode material synthesized by an EG-assisted hydrothermal method exhibits better electrochemical properties. A possible formation mechanism for the Ni0.25Mn0.75CO3 precursor was proposed.

Facile hydrothermal synthesis and enhanced electrochemical properties of a layer NiSiO/RGO nanocomposite with an interesting dandelion-like structure

2021 ◽  
Author(s):  
Guihong Han ◽  
Jing Zhao ◽  
Ze Yang ◽  
Bingbing Liu ◽  
Yanfang Huang ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Electrochemical Properties ◽  
Hydrothermal Method ◽  
New Materials ◽  
Nickel Silicate

Materials with unique structures can exhibit different properties and are widely studied in the preparation of new materials. Herein we reported a hydrothermal method to fabricate a layered nickel silicate/reduced...

Preparation and Electrochemical Properties of VO2(B) Nano-Belts

2011 ◽  
Vol 694 ◽  
pp. 91-97
Author(s):  
Yu Long Qiao ◽  
Yong Jun Ma ◽  
Qing Ping Luo ◽  
Chong Hua Pei
Keyword(s):  
Cyclic Voltammetry ◽  
Energy Loss ◽  
Electrochemical Properties ◽  
Specific Capacitance ◽  
Hydrothermal Method ◽  
Monoclinic Phase ◽  
Galvanostatic Charge ◽  
Crystal Direction ◽  
Electron Energy Loss ◽  
Charge Discharge

The VO2(B) nanobelts with monoclinic phase were synthesized by a hydrothermal method at 220°C for 48 h in the absence of any surfactants. The electron energy loss spectrum (EELS) demonstrates that vanadium exists only in the 4+ oxidation state. The SEM and TEM images reveal a belt-like structure of the VO2(B) with the length of several micrometers, the width of 140 nm and the thickness of around 20nm and growth along the [110] crystal direction. Cyclic voltammetry (CV) and galvanostatic charge/discharge demonstrate that VO2(B) nano-belts electrode exhibits desirable electrochemical properties and the specific capacitance reaches up to 632.6F•g-1.

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