Facile controlled synthesis of a hierarchical porous nanocoral-like Co3S4 electrode for high-performance supercapacitors

RSC Advances ◽  
2016 ◽  
Vol 6 (59) ◽  
pp. 54076-54086 ◽  
Author(s):  
Guijing Liu ◽  
Bo Wang ◽  
Lei Wang ◽  
Tiefeng Liu ◽  
Tiantian Gao ◽  
...  
Keyword(s):  
High Performance ◽  
Controlled Synthesis ◽  
Hierarchical Porous ◽  
One Step ◽  
Hydrothermal Approach

In this work, a hierarchical porous coral-like Co3S4 electrode is synthesized by a facile one-step hydrothermal approach showing high-performance as a supercapacitor.

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.

One-step Synthesis of O-self-doped Honeycomb-like Hierachically Porous Carbons for Supercapacitors

2021 ◽  
pp. 1-19
Author(s):  
Shiying Lin ◽  
Lanlan Mo ◽  
Feijun Wang
Keyword(s):  
Electrode Material ◽  
Porous Carbon ◽  
High Performance ◽  
Rate Capability ◽  
High Specific Capacitance ◽  
Electrode System ◽  
Porous Carbon Material ◽  
Hierarchical Porous ◽  
One Step ◽  
Porous Carbon Electrode

Abstract A facile and environmentally friendly approach to produce self-doped hierachically porous carbon as electrode material for high-performance supercapacitor was demonstrated. 3D honeycomb-like hierarchically porous carbon was successfully obtained by one-step carbonization and activation of sodium carboxymethyl cellulose (CMC) via K2CO3. With the optimized temperature of carbonization and activation, the porous carbon material achieved well-shaped hierarchically pores (micro-, meso and macropores) like a honeycomb, ultrahigh specific surface area (1666 m2·g-1), as well as highly O-self-doping (3.6 at.%), endowing an excellent electrochemical properties for the electrode in three-electrode system. The porous carbon electrode material delivered a high specific capacitance of 300.8 F·g-1 at 1 A·g-1, an eminent rate capability of 228.4 F·g-1 at the current density up to 20 A·g-1 and outstanding cycle stability of 94.3% retention after 10000 cycles. Therefore, the CMC derived hierarchical porous carbon activated by K2CO3 would have promising foreground in application of supercapacitors.

Controlled synthesis of CeVO4 hierarchical hollow microspheres with tunable hollowness and their efficient photocatalytic activity

CrystEngComm ◽  
2018 ◽  
Vol 20 (31) ◽  
pp. 4499-4505 ◽  
Author(s):  
Jinjin Ding ◽  
Xuan Liu ◽  
Miao Wang ◽  
Quan Liu ◽  
Tongming Sun ◽  
...  
Keyword(s):  
Photocatalytic Activity ◽  
Hollow Microspheres ◽  
Controlled Synthesis ◽  
One Step ◽  
Hydrothermal Approach

CeVO4 hierarchical hollow microspheres assembled from nanoscaled building units (nanoparticles, nanocubes and nanoflakes) were synthesized by a one-step hydrothermal approach using l-Asp as the morphology-directing agent.

Hierarchical porous NiCo2O4 nanograss arrays grown on Ni foam as electrode material for high-performance supercapacitors

RSC Advances ◽  
2014 ◽  
Vol 4 (39) ◽  
pp. 20234-20238 ◽  
Author(s):  
Zhenyu Wang ◽  
Yuefei Zhang ◽  
Yonghe Li ◽  
Haoyu Fu
Keyword(s):  
Electrochemical Performance ◽  
Hydrothermal Method ◽  
Electrode Material ◽  
High Performance ◽  
Ni Foam ◽  
Hierarchical Porous ◽  
One Step ◽  
Calcination Treatment

A novel hierarchical porous NiCo2O4 nanograss array directly grown on Ni foam has been constructed via a simple one-step hydrothermal method combined with a calcination treatment, and possessed high electrochemical performance.

Green and tunable fabrication of graphene-like N-doped carbon on a 3D metal substrate as a binder-free anode for high-performance potassium-ion batteries

2019 ◽  
Vol 7 (38) ◽  
pp. 21966-21975 ◽  
Author(s):  
Yongling An ◽  
Yuan Tian ◽  
Yuan Li ◽  
Shenglin Xiong ◽  
Guoqun Zhao ◽  
...  
Keyword(s):  
Porous Carbon ◽  
High Performance ◽  
Metal Substrate ◽  
Potassium Ion ◽  
Hierarchical Porous Carbon ◽  
Carbonization Process ◽  
Hierarchical Porous ◽  
One Step ◽  
Binder Free

A graphene-like N-doped hierarchical porous carbon array on a 3D metal substrate is obtained by a green and one-step vacuum de-metal assisted carbonization process for high performance potassium-ion batteries.

Scalable one-step synthesis of N,S co-doped graphene-enhanced hierarchical porous carbon foam for high-performance solid-state supercapacitors

2019 ◽  
Vol 7 (13) ◽  
pp. 7591-7603 ◽  
Author(s):  
Liya Ma ◽  
Jin Liu ◽  
Song Lv ◽  
Qin Zhou ◽  
Xinyu Shen ◽  
...  
Keyword(s):  
Solid State ◽  
High Performance ◽  
Carbon Foam ◽  
Electrochemical Performances ◽  
Step Method ◽  
Supercapacitor Electrode ◽  
Hierarchical Porous ◽  
Doped Graphene ◽  
One Step ◽  
Co Doped

N,S co-doped graphene-enhanced HPC is prepared by a facile one-step method, and exhibits superior electrochemical performances as a solid-state supercapacitor electrode.

Dual-functional hard template directed one-step formation of a hierarchical porous carbon–carbon nanotube hybrid for lithium–sulfur batteries

2016 ◽  
Vol 52 (82) ◽  
pp. 12143-12146 ◽  
Author(s):  
Chong Luo ◽  
Shuzhang Niu ◽  
Guangmin Zhou ◽  
Wei Lv ◽  
Baohua Li ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Porous Carbon ◽  
High Performance ◽  
Hierarchical Porous Carbon ◽  
Hard Template ◽  
Dual Functional ◽  
Hierarchical Porous ◽  
Lithium Sulfur Batteries ◽  
One Step ◽  
Lithium Sulfur

A hierarchical porous carbon–carbon nanotube hybrid, which can be used as a high performance carbon host for sulfur, is formed in one step using a dual-functional hard template.

Sign in / Sign up

Export Citation Format

Share Document