Unknown

Dataset Information

0

Heterojunction ?-Co(OH)2/?-Ni(OH)2 nanorods arrays on Ni foam with high utilization rate and excellent structure stability for high-performance supercapacitor.

ABSTRACT: The practical implementation of supercapacitors is hindered by low utilization and poor structural stability of electrode materials. Herein, to surmount these critical challenges, a three-dimensional hierarchical ?-Co(OH)2/?-Ni(OH)2 heterojunction nanorods are built in situ on Ni foam through a mild two-step growth reaction. The unique lamellar crystal structure and abundant intercalated anions of ?-M(OH)2 (M?=?Co or Ni) and the ideal electronic conductivity of ?-Co(OH)2 construct numerous cross-linked ion and electron transport paths in heterojunction nanorods. The deformation stresses exerted by ?-Co(OH)2 and ?-Ni(OH)2 on each other guarantee the excellent structural stability of this heterojunction nanorods. Using nickel foam with a three-dimensional network conductive framework as the template ensures the rapidly transfer of electrons between this heterojunction nanorods and current collector. Three-dimensional hierarchical structure of ?-Co(OH)2/?-Ni(OH)2 heterojunction nanorods provides a large liquid interface area. These result together in the high utilization rate and excellent structure stability of the ?-Co(OH)2/?-Ni(OH)2 heterojunction nanorods. And the capacitance retention rate is up to 93.4% at 1?A?g-1 from three-electrode system to two-electrode system. The ?-Co(OH)2/?-Ni(OH)2//AC device also present a long cycle life (the capacitance retention rate is 123.6% at 5?A?g-1 for 10000 cycles), a high specific capacitance (207.2?F?g-1 at 1?A?g-1), and high energy density and power density (72.6?Wh?kg-1 at 196.4?W?kg-1 and 40.9?Wh?kg-1 at 3491.8?W?kg-1), exhibiting a fascinating potential for supercapacitor in large-scale applications.

SUBMITTER: Zhou S 

PROVIDER: S-EPMC6726609 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature

Json Xml
altmetric image

Publications

Heterojunction α-Co(OH)<sub>2</sub>/α-Ni(OH)<sub>2</sub> nanorods arrays on Ni foam with high utilization rate and excellent structure stability for high-performance supercapacitor.

Zhou Shaojie S   Wei Wutao W   Zhang Yingying Y   Cui Shizhong S   Chen Weihua W   Mi Liwei L  

Scientific reports 20190904 1

The practical implementation of supercapacitors is hindered by low utilization and poor structural stability of electrode materials. Herein, to surmount these critical challenges, a three-dimensional hierarchical α-Co(OH)<sub>2</sub>/α-Ni(OH)<sub>2</sub> heterojunction nanorods are built in situ on Ni foam through a mild two-step growth reaction. The unique lamellar crystal structure and abundant intercalated anions of α-M(OH)<sub>2</sub> (M = Co or Ni) and the ideal electronic conductivity of α  ...[more]

Similar Datasets

Unknown Template-Free Preparation of α-Ni(OH)<sub>2</sub> Nanosphere as High-Performance Electrode Material for Advanced Supercapacitor.
| S-EPMC9267997 | biostudies-literature
Unknown NiSe<sub>2</sub>/Ni(OH)<sub>2</sub> Heterojunction Composite through Epitaxial-like Strategy as High-Rate Battery-Type Electrode Material.
| S-EPMC7770911 | biostudies-literature
Unknown 3D TiO2@Ni(OH)2 Core-shell Arrays with Tunable Nanostructure for Hybrid Supercapacitor Application.
| S-EPMC4564762 | biostudies-other
Unknown PolyHIPE Derived Freestanding 3D Carbon Foam for Cobalt Hydroxide Nanorods Based High Performance Supercapacitor.
| S-EPMC5071864 | biostudies-literature
Unknown Ni(OH)<sub>2</sub> nanosheets grown on porous hybrid g-C<sub>3</sub>N<sub>4</sub>/RGO network as high performance supercapacitor electrode.
| S-EPMC5347133 | biostudies-literature
Unknown Hybrid ?-Fe2O3@Ni(OH)2 nanosheet composite for high-rate-performance supercapacitor electrode.
| S-EPMC4995458 | biostudies-literature
Unknown Facile Synthesis ZnS/ZnO/Ni(OH)<sub>2</sub> Composites Grown on Ni Foam: A Bifunctional Materials for Photocatalysts and Supercapacitors.
| S-EPMC5465224 | biostudies-literature
Unknown Regulating the active species of Ni(OH)<sub>2</sub> using CeO<sub>2</sub>: 3D CeO<sub>2</sub>/Ni(OH)<sub>2</sub>/carbon foam as an efficient electrode for the oxygen evolution reaction.
| S-EPMC5414546 | biostudies-literature
Unknown Fabrication of hierarchical core/shell MgCo<sub>2</sub>O<sub>4</sub>@MnO<sub>2</sub> nanowall arrays on Ni-foam as high-rate electrodes for asymmetric supercapacitors.
| S-EPMC6715631 | biostudies-literature
Unknown Superior asymmetric supercapacitor based on Ni-Co oxide nanosheets and carbon nanorods.
| S-EPMC3893647 | biostudies-literature