Remarkably Stable Nickel Hydroxide Nanoparticles for Miniaturized Electrochemical Energy Storage

2020 ◽  
Vol 3 (8) ◽  
pp. 7294-7305 ◽  
Author(s):  
Sadaf Tahmasebi ◽  
Soran Jahangiri ◽  
Nicholas Mosey ◽  
Gregory Jerkiewicz ◽  
Alison Mark ◽  
...  
Keyword(s):  
Energy Storage ◽  
Nickel Hydroxide ◽  
Electrochemical Energy Storage ◽  
Nickel Hydroxide Nanoparticles ◽  
Electrochemical Energy

scholarly journals Lanthanum Oxide Nickel Hydroxide Composite Triangle Nanosheets for Energy Density Asymmetric Supercapacitors

2021 ◽  
Vol 9 ◽  
Author(s):  
Huiyu Duan ◽  
Mei Shi ◽  
Mengfei Zhang ◽  
Geyu Feng ◽  
Suli Liu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Transition Metal ◽  
Electrode Material ◽  
Nickel Hydroxide ◽  
Lanthanum Oxide ◽  
Proton Conductors ◽  
Metal Hydroxide ◽  
Electrochemical Energy Storage ◽  
Electrochemical Energy

Transition metal hydroxides are a kind of promising electrode material in electrochemical energy storage, but the poor conductivity limits their application. Lanthanides are good proton conductors and can usually improve the intrinsic conductivity of other materials. By integrating the merits of lanthanide elements and transition metal hydroxide, we designed lanthanum oxide nickel hydroxide composites (LONH) with unique ultrathin triangle nanosheet morphology via a controllable synthetic strategy for high-performance supercapacitors. When the LONH is used as positive electrode material in aqueous asymmetric supercapacitor, it reveals an energy density (107.8 W h kg−1 at 800 W kg−1), rate performance (86.9% retention at 4 kW kg−1) and outstanding cycle stability (more than 90% retention after 3,000 cycles). This work confirms that compositing La2O3 and Ni(OH)2 can significantly improve the supercapacitor performance of both pristine La2O3 and transition metal hydroxide composites. We hope this work would offer a good prospect for developing other lanthanide-transition metal hydroxide composites as an attractive class of electrode materials in electrochemical energy storage.

Carbothermal conversion of boric acid into boron-oxy-carbide nanostructures for high-power supercapacitors

2021 ◽  
Author(s):  
Dhanasekar Kesavan ◽  
Vimal Kumar Mariappan ◽  
Karthikeyan Krishnamoorthy ◽  
Sang-Jae Kim
Keyword(s):  
Energy Storage ◽  
Boric Acid ◽  
High Power ◽  
Electrochemical Energy Storage ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Carbothermal Method ◽  
Electrochemical Energy

In this study, we report a facile carbothermal method for the preparation of boron-oxy-carbide (BOC) nanostructures and explore their properties towards electrochemical energy storage devices.

Sign in / Sign up

Export Citation Format

Share Document