scholarly journals A comparative study on the electrochemical properties of nanoporous nickel oxide nanowires and nanosheets prepared by a hydrothermal method

RSC Advances ◽  
2018 ◽  
Vol 8 (35) ◽  
pp. 19449-19455 ◽  
Author(s):  
Kien Nguyen ◽  
Nguyen Duc Hoa ◽  
Chu Manh Hung ◽  
Dang Thi Thanh Le ◽  
Nguyen Van Duy ◽  
...  
Keyword(s):  
Comparative Study ◽  
Electrochemical Performance ◽  
Nickel Oxide ◽  
Electrochemical Properties ◽  
Hydrothermal Method ◽  
Oxide Nanowires ◽  
Supercapacitor Application ◽  
Nio Nanosheets

Nanoporous NiO nanosheets and nanowires were synthesized by a hydrothermal method and their electrochemical properties were compared. Results show that the nanoporous NiO nanosheets have a better electrochemical performance and suitable for supercapacitor application.

scholarly journals High volumetric energy density annealed-MXene-nickel oxide/MXene asymmetric supercapacitor

RSC Advances ◽  
2017 ◽  
Vol 7 (18) ◽  
pp. 11000-11011 ◽  
Author(s):  
Qi Xun Xia ◽  
Jianjian Fu ◽  
Je Moon Yun ◽  
Rajaram S. Mane ◽  
Kwang Ho Kim
Keyword(s):  
Energy Density ◽  
Nickel Oxide ◽  
Hydrothermal Method ◽  
Cost Effective ◽  
Asymmetric Supercapacitor ◽  
Nio Nanosheets

A Ti3C2TxMXene electrode decorated with NiO nanosheets was synthesized by a facile and cost-effective hydrothermal method.

Effect of Morphology of ZnCo2O4 Nanostructures on Electrochemical Performance

NANO ◽  
2016 ◽  
Vol 11 (08) ◽  
pp. 1650089 ◽  
Author(s):  
J. Y. Dong ◽  
N. Zhang ◽  
S. Y. Lin ◽  
T. T. Chen ◽  
M. Y. Zhang ◽  
...  
Keyword(s):  
Electrochemical Performance ◽  
Specific Surface ◽  
Electrochemical Properties ◽  
Specific Capacitance ◽  
Hydrothermal Method ◽  
Surface Area ◽  
Specific Surface Area ◽  
Nickel Foam ◽  
High Specific Surface Area ◽  
Active Materials

The ZnCo2O4 nanorods and nanosheets were grown on nickel foam by a facile and effective hydrothermal method, respectively. The effect of the morphologies of the nanostructures on electrochemical performance was investigated. Importantly, ZnCo2O4 nanorod electrodes with a high specific surface area exhibited a higher specific capacitance of 2457.4 F g[Formula: see text] at 2 A g[Formula: see text] and remarkable cycling stability with capacitance retention of 97.7% after 1000 cycles, which are superior to those of ZnCo2O4 nanosheet electrodes. Such a result is well explained. The investigation on the electrochemical properties of these two nanostructures as electrodes confirmed that the morphology of active materials has an important impact on electrochemical properties.

Selective synthesis of nickel oxide nanowires and length effect on their electrochemical properties

Nanoscale ◽  
2010 ◽  
Vol 2 (6) ◽  
pp. 920 ◽  
Author(s):  
Huan Pang ◽  
Qingyi Lu ◽  
Yizhou Zhang ◽  
Yecheng Li ◽  
Feng Gao
Keyword(s):  
Nickel Oxide ◽  
Electrochemical Properties ◽  
Selective Synthesis ◽  
Length Effect ◽  
Oxide Nanowires

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.

Preparation and Electrochemical Properties of Graphene/MnO2 Nanocomposites for Supercapacitors

2018 ◽  
Vol 768 ◽  
pp. 102-108 ◽  
Author(s):  
Hai Bo Sun ◽  
Hua Zhi Gu ◽  
Yao Chen
Keyword(s):  
Graphene Oxide ◽  
Electrochemical Performance ◽  
Electrochemical Properties ◽  
Specific Capacitance ◽  
Hydrothermal Method ◽  
Raw Materials ◽  
Simple Hydrothermal Method ◽  
Neutral Electrolyte

In the present work, we demonstrated a facile process to prepare graphene/MnO2composites via a simple hydrothermal method at 120 °C using KMnO4and graphene oxide as raw materials followed by reduction with or without hydrazine. The electrochemical performance of the graphene/MnO2composites were investigated in a neutral electrolyte of Na2SO4. Among these samples, the sample rGM3prepared without hydrazine show uniform morphology and the best electrochemical performance. The specific capacitance of rGM3is 169 F g-1at a specific current of 0.2 A g-1. It exhibits a maintenance of 75.5 % of the initial capacitance after 1000 cycles. The results manifest that the graphene/MnO2composites can be potentially applied in supercapacitors.

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