Two- and three-dimensional graphene-based hybrid composites for advanced energy storage and conversion devices

2018 ◽  
Vol 6 (3) ◽  
pp. 702-734 ◽  
Author(s):  
Jalal Azadmanjiri ◽  
Vijay K. Srivastava ◽  
Parshant Kumar ◽  
Mostafa Nikzad ◽  
James Wang ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Efficiency ◽  
Hybrid Composites ◽  
Three Dimensional ◽  
Energy Storage And Conversion ◽  
3D Graphene ◽  
2D And 3D

2D and 3D graphene-based hybrid composites are the most promising materials for a broad range of high-efficiency energy storage and conversion devices.

Controlled synthesis of three-dimensional interconnected graphene-like nanosheets from graphite microspheres as high-performance anodes for lithium-ion batteries

2015 ◽  
Vol 3 (42) ◽  
pp. 21298-21307 ◽  
Author(s):  
Hong-Qiang Wang ◽  
Guan-Hua Yang ◽  
Li-San Cui ◽  
Ze-Sheng Li ◽  
Zhi-Xiong Yan ◽  
...  
Keyword(s):  
Energy Storage ◽  
Lithium Ion Batteries ◽  
High Performance ◽  
Three Dimensional ◽  
Lithium Ion ◽  
Electrochemical Energy Storage ◽  
Energy Storage And Conversion ◽  
Controlled Synthesis ◽  
3D Graphene ◽  
Application Potential

Three-dimensional (3D) graphene-based materials have received increasing attention due to their application potential in electrochemical energy storage and conversion.

Freestanding 3D graphene/cobalt sulfide composites for supercapacitors and hydrogen evolution reaction

RSC Advances ◽  
2015 ◽  
Vol 5 (9) ◽  
pp. 6886-6891 ◽  
Author(s):  
Yang Wang ◽  
Jing Tang ◽  
Biao Kong ◽  
Dingsi Jia ◽  
Yuhang Wang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
High Efficiency ◽  
Cobalt Sulfide ◽  
Energy Storage And Conversion ◽  
Active Materials ◽  
3D Graphene ◽  
Electrochemically Active

The development of lightweight, flexible, electrochemically active materials with high efficiency is important for energy storage and conversion.

scholarly journals Promoting the Performance of Li–CO2 Batteries via Constructing Three-Dimensional Interconnected K+ Doped MnO2 Nanowires Networks

2021 ◽  
Vol 9 ◽  
Author(s):  
Zhuolin Tang ◽  
Mengming Yuan ◽  
Huali Zhu ◽  
Guang Zeng ◽  
Jun Liu ◽  
...  
Keyword(s):  
Noble Metals ◽  
High Efficiency ◽  
Low Cost ◽  
Three Dimensional ◽  
High Energy ◽  
High Energy Density ◽  
Cycle Performance ◽  
Energy Storage And Conversion ◽  
Actual Application ◽  
Charge Process

Nowadays, Li–CO2 batteries have attracted enormous interests due to their high energy density for integrated energy storage and conversion devices, superiorities of capturing and converting CO2. Nevertheless, the actual application of Li–CO2 batteries is hindered attributed to excessive overpotential and poor lifespan. In the past decades, catalysts have been employed in the Li–CO2 batteries and been demonstrated to reduce the decomposition potential of the as-formed Li2CO3 during charge process with high efficiency. However, as a representative of promising catalysts, the high costs of noble metals limit the further development, which gives rise to the exploration of catalysts with high efficiency and low cost. In this work, we prepared a K+ doped MnO2 nanowires networks with three-dimensional interconnections (3D KMO NWs) catalyst through a simple hydrothermal method. The interconnected 3D nanowires network catalysts could accelerate the Li ions diffusion, CO2 transfer and the decomposition of discharge products Li2CO3. It is found that high content of K+ doping can promote the diffusion of ions, electrons and CO2 in the MnO2 air cathode, and promote the octahedral effect of MnO6, stabilize the structure of MnO2 hosts, and improve the catalytic activity of CO2. Therefore, it shows a high total discharge capacity of 9,043 mAh g−1, a low overpotential of 1.25 V, and a longer cycle performance.

Three-Dimensional Graphene/MnO2 Nanowalls Hybrid for High-Efficiency Electrochemical Supercapacitors

NANO ◽  
2018 ◽  
Vol 13 (01) ◽  
pp. 1850013 ◽  
Author(s):  
Chuanyin Xiong ◽  
Tiehu Li ◽  
Tingkai Zhao ◽  
Alei Dang ◽  
Xianglin Ji ◽  
...  
Keyword(s):  
Electron Microscope ◽  
Specific Capacitance ◽  
High Efficiency ◽  
Hydrogen Reduction ◽  
Three Dimensional ◽  
High Specific Capacitance ◽  
High Energy ◽  
High Energy Density ◽  
Energy Storage Devices ◽  
3D Graphene

In this paper, a facile method is designed to fabricate three-dimensional (3D) graphene (GR)/manganese dioxide (MnO2) nanowall electrode material. The 3D GR/MnO2 hybrid is prepared by a combination of electrochemical deposition (ELD) and electrophoresis deposition (EPD), followed by thermal reduction (TR). Firstly, the 3D graphene oxide (GO)/MnO2 hybrid is obtained by the ELD–EPD method. Secondly, the 3D GR/MnO2 hybrid is obtained through hydrogen reduction at a certain temperature. The as-fabricated hybrid has been characterized by scanning electron microscope (SEM), transmission electron microscope (TEM) and Raman spectroscopy. The electrochemical properties have been also measured by cyclic voltammetry. The results showed that the 3D GR/MnO2 nanowalls hybrid has a high specific capacitance of 266.75[Formula: see text]Fg[Formula: see text] and a high energy density of 25.36[Formula: see text]Whkg[Formula: see text]. Moreover, a high specific capacitance (240.15[Formula: see text]Fg[Formula: see text]) at a high scan rate of 200[Formula: see text]mVs[Formula: see text] (90% capacity retention) has been also obtained. Additionally, the hybrid can serve directly as the electrodes of supercapacitor without adding binder. This work provides a novel road to fabricate a binder-free 3D GR-based hybrid for high-performance energy storage devices.

Three-Dimensional Graphene Oxide-Supported Zinc Oxide Scaffold as a High-Efficiency Adsorbent for Desulfurization

NANO ◽  
2020 ◽  
Vol 15 (05) ◽  
pp. 2050059
Author(s):  
Yan Liu ◽  
Xiaojun Zhang ◽  
Meiyan Yang ◽  
Bowen Guo ◽  
Jixiang Guo ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Graphene Oxide ◽  
High Efficiency ◽  
Porous Scaffold ◽  
Specific Binding ◽  
Three Dimensional ◽  
3D Graphene ◽  
Fcc Gasoline ◽  
And Control ◽  
Aryl Sulfides

Sulfur oxides are air pollutants derived mainly from the combustion of gasoline. Reducing the sulfur content of fluid catalytic cracking (FCC) gasoline is of key importance for the prevention and control of atmospheric pollution. We describe herein the fabrication and characterization of a porous, three-dimensional (3D) graphene oxide-supported zinc oxide (GO/ZnO) scaffold as an adsorbent for desulfurization with various model compounds and real FCC gasoline. The uniform and stable dispersion of ZnO nanoparticles on the surface of GO facilitates the specific binding of sulfides. Moreover, GO synergistically adsorbs aryl sulfides via [Formula: see text]–[Formula: see text] stacking interactions. The GO/ZnO nanosheets were further self-assembled into a 3D porous scaffold that effectively trapped sulfides and inhibited desorption. These scaffolds exhibited excellent desulfurization performance with maximum sulfur capacity up to 29.73[Formula: see text]mg S/g. This work provides a novel perspective on the fabrication of high-efficiency adsorbents for gasoline pretreatment.

Storage of hydrogen and lithium in inorganic nanotubes and nanowires

2006 ◽  
Vol 21 (11) ◽  
pp. 2744-2757 ◽  
Author(s):  
Fangyi Cheng ◽  
Jun Chen
Keyword(s):  
Energy Storage ◽  
High Efficiency ◽  
Low Cost ◽  
High Surface ◽  
Rechargeable Batteries ◽  
Energy Storage And Conversion ◽  
Electrochemical Characteristics ◽  
Environmental Benefit ◽  
Lithium Storage ◽  
Inorganic Nanotubes

The search for cleaner and more efficient energy storage and conversion technologies has become an urgent task due to increasing environmental issues and limited energy resources. The aim of energy storage and conversion is to obtain energy with environmental benefit, high efficiency, and low cost (namely, maximum atomic and recycling economy). Progress has been made in the fields of hydrogen storage and rechargeable batteries. The emerging nanotechnology offers great opportunities to improve the performance of existing energy storage systems. Applying nanoscale materials to energy storage offers a higher capacity compared to the bulk counterparts due to the unique properties of nanomaterials such as high surface areas, large surface-to-volume atom ratio, and size-confinement effect. In particular, one- dimensional (1D) inorganic nanostructures like tubes and wires exhibit superior electrochemical characteristics because of the combined advantages of small size and 1D morphology. Hydrogen and lithium can be stored in different 1D nanostructures in various ways, including physical and/or chemical sorption, intercalation, and electrochemical reactions. This review highlights some of the latest progress with the studies of hydrogen and lithium storage in inorganic nanotubes and nanowires such as MoS2, WS2, TiS2, BN, TiO2, MnO2, V2O5, Fe2O3, Co3O4, NiO, and SnO2.

Bifunctional oxygen electrocatalysis on ultra-thin Co9S8/MnS carbon nanosheets for all-solid-state zinc-air batteries

2021 ◽  
Author(s):  
Jiacheng Li ◽  
Wanqing Li ◽  
Hongwei Mi ◽  
Yongliang Li ◽  
Libo Deng ◽  
...  
Keyword(s):  
Energy Storage ◽  
Solid State ◽  
Oxygen Reduction Reaction ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
High Efficiency ◽  
Reduction Reaction ◽  
Energy Storage And Conversion ◽  
Carbon Nanosheets ◽  
Zinc Air Batteries

The development of high-efficiency and durable bifunctional oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) electrocatalysts as air cathodes is still a challenge in energy storage and conversion. In...

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