Solvothermal One-Step Synthesis of Ni–Al Layered Double Hydroxide/Carbon Nanotube/Reduced Graphene Oxide Sheet Ternary Nanocomposite with Ultrahigh Capacitance for Supercapacitors

2013 ◽  
Vol 5 (12) ◽  
pp. 5443-5454 ◽  
Author(s):  
Wanlu Yang ◽  
Zan Gao ◽  
Jun Wang ◽  
Jing Ma ◽  
Milin Zhang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Carbon Nanotube ◽  
Reduced Graphene Oxide ◽  
Layered Double Hydroxide ◽  
Graphene Oxide Sheet ◽  
Ternary Nanocomposite ◽  
Reduced Graphene ◽  
One Step ◽  
Double Hydroxide

Synthesis of 3D hierarchical porous Ni–Co layered double hydroxide/N-doped reduced graphene oxide composites for supercapacitor electrodes

2019 ◽  
Vol 6 (2) ◽  
pp. 407-416 ◽  
Author(s):  
Wencong Wang ◽  
Ning Zhang ◽  
Ziran Ye ◽  
Zhanglian Hong ◽  
Mingjia Zhi
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Layered Double Hydroxide ◽  
Hydrothermal Process ◽  
Three Dimensional ◽  
Reduced Graphene ◽  
Hierarchical Porous ◽  
One Step ◽  
Double Hydroxide ◽  
Oxide Composites

In this work, three-dimensional porous Ni–Co layered double hydroxide nanosheets are vertically decorated on N-doped reduced graphene oxide via a simple one-step microwave-assisted hydrothermal process.

Integrating ultrathin and modified NiCoAl-layered double-hydroxide nanosheets with N-doped reduced graphene oxide for high-performance all-solid-state supercapacitors

Nanoscale ◽  
2019 ◽  
Vol 11 (20) ◽  
pp. 9896-9905 ◽  
Author(s):  
Fei Liu ◽  
Yuyun Chen ◽  
Ying Liu ◽  
Jianchun Bao ◽  
Min Han ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Solid State ◽  
Reduced Graphene Oxide ◽  
Layered Double Hydroxide ◽  
High Performance ◽  
Supercapacitive Performance ◽  
Oxygen Abundance ◽  
Reduced Graphene ◽  
Doped Graphene ◽  
Double Hydroxide

This study reports a novel NiCoAl-LDH/N-doped graphene nanohybrid integrating more oxygen abundance and high conductivity, which exhibits superior supercapacitive performance.

Facile Synthesis of Ni–Mn Layered Double Hydroxide Nanopetals on 3D Reduced Graphene Oxide/Ni Foam for High-Performance Supercapacitors

NANO ◽  
2020 ◽  
Vol 15 (02) ◽  
pp. 2050021
Author(s):  
Qi Tang ◽  
Menghan Ye ◽  
Li Ma ◽  
Tao Zhou ◽  
Mengyu Gan ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Layered Double Hydroxide ◽  
Electrode Material ◽  
Active Sites ◽  
Retention Rate ◽  
Ni Foam ◽  
Reduced Graphene ◽  
Capacitance Performance ◽  
Double Hydroxide

In this work, the Ni–Mn layered double hydroxide (Ni–Mn LDH) nanopetals are fabricated on three-dimensional reduced graphene oxide/Ni foam (RGO/NF) by one-step hydrothermal method, in which the suspension of graphene oxide (GO) is directly reduced by nickel foam (NF) to obtain NF/RGO. The composite, which consists of interconnected Ni–Mn LDH nanopetals, forms a macroporous structure. Such an open space can promote electrolyte dispersion and ion diffusion of active substances, thus enhancing capacitance performance. Remarkable, during crystal growth, RGO can not only provide active sites for Ni–Mn LDH nanopetals, but also effectively connect Ni–Mn LDH nanopetals to NF, further promoting the electrochemical behavior of composite material. Moreover, RGO possess reasonable chemical stability which can improve the mechanical properties of the composite to obtain good stability. The experimental results show that the NF/RGO electrode material with Ni–Mn LDH nanopetals has excellent specific capacitance of 2250[Formula: see text]F[Formula: see text]g[Formula: see text] at 1[Formula: see text]A[Formula: see text]g[Formula: see text], good rate performance (the capacitance retention rate is still 64.0% at 10[Formula: see text]A[Formula: see text]g[Formula: see text] and excellent cycle life (45.1% at 10[Formula: see text]A[Formula: see text]g[Formula: see text] after 5000 cycles). NR/NM–LDH is used as the positive electrode and activated carbon is used as the negative electrode to assemble the asymmetric supercapacitor, the proper power density and energy density indicates that the NR/NM–LDH composite has great potential as an electrode material for supercapacitors.

Polyaniline functionalized reduced graphene oxide/carbon nanotube ternary nanocomposite as a supercapacitor electrode

2020 ◽  
Vol 56 (28) ◽  
pp. 4003-4006 ◽  
Author(s):  
Chengchao Wang ◽  
Yue Yang ◽  
Ruijun Li ◽  
Datong Wu ◽  
Yong Qin ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Graphene Oxide ◽  
Carbon Nanotube ◽  
Reduced Graphene Oxide ◽  
High Performance ◽  
Supercapacitor Electrode ◽  
Ternary Nanocomposite ◽  
Reduced Graphene

Polyaniline is covalently functionalized onto the RGO surface in the presence of carbon nanotubes and used for high performance supercapacitors.

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