Peony petal-like 3D graphene-nickel oxide nanocomposite decorated nickel foam as high-performance electrocatalyst for direct glucose alkaline fuel cell

2017 ◽  
Vol 42 (50) ◽  
pp. 29863-29873 ◽  
Author(s):  
Yang Zhao ◽  
Xianhua Liu ◽  
Xin Wang ◽  
Pingping Zhang ◽  
Jiafu Shi
Keyword(s):  
Fuel Cell ◽  
Nickel Oxide ◽  
High Performance ◽  
Nickel Foam ◽  
Alkaline Fuel Cell ◽  
3D Graphene

scholarly journals N, S and Transition-Metal Co-Doped Graphene Nanocomposites as High-Performance Catalyst for Glucose Oxidation in a Direct Glucose Alkaline Fuel Cell

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 202
Author(s):  
Yexin Dai ◽  
Jie Ding ◽  
Jingyu Li ◽  
Yang Li ◽  
Yanping Zong ◽  
...  
Keyword(s):  
Fuel Cell ◽  
Active Sites ◽  
High Performance ◽  
Glucose Oxidation ◽  
Alkaline Fuel Cell ◽  
Blank Group ◽  
Graphene Nanocomposites ◽  
Doped Graphene ◽  
One Step ◽  
Hydrothermal Approach

In this work, reduced graphene oxide (rGO) nanocomposites doped with nitrogen (N), sulfur (S) and transitional metal (Ni, Co, Fe) were synthesized by using a simple one-step in-situ hydrothermal approach. Electrochemical characterization showed that rGO-NS-Ni was the most prominent catalyst for glucose oxidation. The current density of the direct glucose alkaline fuel cell (DGAFC) with rGO-NS-Ni as the anode catalyst reached 148.0 mA/cm2, which was 40.82% higher than the blank group. The DGAFC exhibited a maximum power density of 48 W/m2, which was more than 2.08 folds than that of blank group. The catalyst was further characterized by SEM, XPS and Raman. It was speculated that the boosted performance was due to the synergistic effect of N, S-doped rGO and the metallic redox couples, (Ni2+/Ni3+, Co2+/Co3+ and Fe2+/Fe3+), which created more active sites and accelerated electron transfer. This research can provide insights for the development of environmental benign catalysts and promote the application of the DGAFCs.

Hierarchical Composite Electrodes of Nickel Oxide Nanoflake 3D Graphene for High-Performance Pseudocapacitors

2014 ◽  
Vol 24 (40) ◽  
pp. 6372-6380 ◽  
Author(s):  
Chundong Wang ◽  
Junling Xu ◽  
Muk-Fung Yuen ◽  
Jie Zhang ◽  
Yangyang Li ◽  
...  
Keyword(s):  
Nickel Oxide ◽  
High Performance ◽  
Composite Electrodes ◽  
3D Graphene

Advanced solid-state asymmetric supercapacitors based on 3D graphene/MnO2 and graphene/polypyrrole hybrid architectures

2015 ◽  
Vol 3 (24) ◽  
pp. 12828-12835 ◽  
Author(s):  
Zheye Zhang ◽  
Kai Chi ◽  
Fei Xiao ◽  
Shuai Wang
Keyword(s):  
Solid State ◽  
High Performance ◽  
Nickel Foam ◽  
Asymmetric Supercapacitors ◽  
Hybrid Architectures ◽  
3D Graphene

Two types of 3D architectured electrodes, i.e., graphene wrapped nickel foam Ni/GF/MnO2 and Ni/GF/polypyrrole (PPy), were successfully fabricated for high performance flexible solid-state asymmetric supercapacitors.

The Electrolyte-Fuel Concentrations Effects on Direct Methanol Alkaline Fuel Cell (DMAFC) Through Non-Noble Metal Catalysts

2021 ◽  
Vol 5 (1) ◽  
pp. 25
Author(s):  
Wika Atro Auriyani ◽  
Djoni Bustan ◽  
Sri Haryati
Keyword(s):  
Fuel Cell ◽  
Methanol Oxidation ◽  
Current Density ◽  
Potassium Hydroxide ◽  
Oxidation Reaction ◽  
Nickel Foam ◽  
Methanol Oxidation Reaction ◽  
Alkaline Fuel Cell ◽  
Noble Metal Catalysts ◽  
Direct Methanol

Most of the R&D on Direct Methanol Alkaline Fuel Cell (DMAFC) concentrates on electrode catalyst and appropriate electrolyte to improve the efficiency. Mostly, a Pt-based electrocatalyst was used. In this research, Nickel foam and membrane silver as non-noble metal catalysts were used in a square-shaped fuel cell stack of 15 x 15 cm in size. The ionic current in the Direct Methanol Alkaline Fuel Cell (DMAFC) was due to the conduction of hydroxide ions. Potassium hydroxide which plays an essential role in delivering hydroxide ions was used in this study. The electrolyte effect of potassium hydroxide was studied in different concentrations for the methanol oxidation reaction. Nickel foam and membrane silver were used for methanol oxidation reaction (MOR) and oxygen reduction reaction (ORR). 1 M, 3 M, 5 M concentration of potassium hydroxide and 0.5 M, 1 M, 2 M, 3 M, 4 M, 5 M of methanol as a fuel have been conducted. The highest maximum power density of 543.35 mW/cm2 was obtained at 2,331 mA/cm2 of current density using the 5 M KOH and 0,5 M fuel. At equimolar concentration between fuel-electrolyte mixture give the higher current density.

Mesoporous 3D graphene@NiCo2O4 arrays on nickel foam as electrodes for high-performance supercapacitors

2016 ◽  
Vol 170 ◽  
pp. 105-109 ◽  
Author(s):  
Van Hoa Nguyen ◽  
Charmaine Lamiel ◽  
Jae-Jin Shim
Keyword(s):  
High Performance ◽  
Nickel Foam ◽  
3D Graphene

scholarly journals High mass loading flower-like MnO2 on NiCo2O4 deposited graphene/nickel foam as high-performance electrodes for asymmetric supercapacitors

RSC Advances ◽  
2021 ◽  
Vol 11 (27) ◽  
pp. 16161-16172
Author(s):  
Jing Jin ◽  
Jie Ding ◽  
Xing Wang ◽  
Congcong Hong ◽  
Huaping Wu ◽  
...  
Keyword(s):  
Energy Density ◽  
High Performance ◽  
Nickel Foam ◽  
High Mass ◽  
Asymmetric Supercapacitor ◽  
Mass Loading ◽  
Asymmetric Supercapacitors ◽  
3D Graphene

A NiCo2O4/MnO2 heterostructure with high mass loading MnO2 microflowers was built on the surface of 3D graphene/nickel foam for the preparation of an asymmetric supercapacitor with splended energy density (45.9 Wh kg−1).

Sign in / Sign up

Export Citation Format

Share Document