Graphene based energy devices
Due to its excellent electronic properties, facile synthesis, and ease of functionalization, graphene has attracted huge attention in numerous subjects. In this themed collection, a series of recent advancements are reported along with comprehensive review articles that focus on graphene’s versatility and tunability as well as its remarkable applications in various types of energy storage and conversion devices.
Graphene-modified electrodes for enhancing the performance of microbial fuel cells
Graphene-based materials hold great promise as electrode materials/catalysts in microbial fuel cells for sustainable bioenergy recovery from wastes.
Synthesis of 3D structured graphene as a high performance catalyst support for methanol electro-oxidation
3D structured graphene was fabricated via a solution combustion method and used as an efficient and stable catalyst support of platinum for the electrochemical oxidation of methanol.
Nanostructured pseudocapacitive materials decorated 3D graphene foam electrodes for next generation supercapacitors
The most recent research advancements of our and other groups in the field of PCMs decorated 3D graphene based electrode for supercapacitors are discussed.
Graphene supported non-precious metal-macrocycle catalysts for oxygen reduction reaction in fuel cells
Fuel cells are promising alternative energy devices owing to their high efficiency and eco-friendliness.
3D graphene nanomaterials for binder-free supercapacitors: scientific design for enhanced performance
This feature article highlights the fabrication of three-dimensional graphene-based nanomaterials and their application in binder-free supercapacitors.
Computational chemistry for graphene-based energy applications: progress and challenges
Computational chemistry has a bright future in the field of graphene-based energy applications. For example, outcomes from computational chemistry studies will help to develop new graphene-nanoparticle assemblies for fuel cells.
Graphene based enzymatic bioelectrodes and biofuel cells
The recent progress in graphene based enzyme nanocomposites is reviewed with focus on the physicochemical aspects of graphene and its use as a bioimmobilization and electrode material in biofuel cells.
How to get between the sheets: a review of recent works on the electrochemical exfoliation of graphene materials from bulk graphite
This review aims to summarise recent relevant electrochemical approaches to the production of graphene and related materials.
Three-dimensional graphene-based composites for energy applications
This review discusses recent progress in 3D graphene-based composites and their applications in energy conversion/storage devices.
SiO2-coated sulfur particles with mildly reduced graphene oxide as a cathode material for lithium–sulfur batteries
SiO2-coated particles were synthesized using wet chemical processes under ambient conditions as a novel lithium-sulfur cathode material. Performance was further improved via addition of mildly reduced graphene oxide (mrGO).
Improved functionality of graphene and carbon nanotube hybrid foam architecture by UV-ozone treatment
Optimization of the electrode/electrolyte double-layer interface is a key factor for improving electrode performance of aqueous electrolyte based supercapacitors (SCs).
Flawed MoO2 belts transformed from MoO3 on a graphene template for the hydrogen evolution reaction
A novel method to construct flawed MoO2 belts on graphene was developed, which provided an alternative way to develop highly efficient electrocatalysts.
Two-dimensional NiCo2O4 nanosheet-coated three-dimensional graphene networks for high-rate, long-cycle-life supercapacitors
We report the synthesis of two-dimensional (2D) NiCo2O4 nanosheet-coated three-dimensional graphene network (3DGN), which is then used as an electrode for high-rate, long-cycle-life supercapacitors.
New insight into the enhanced visible light photocatalytic activity over boron-doped reduced graphene oxide
The B-doped RGO prepared by a facile one-step reflux method exhibits significantly higher visible-light-driven photocatalytic activity than non-doped RGO for the degradation of dyes.
Graphene/enzyme-encrusted three-dimensional carbon micropillar arrays for mediatorless micro-biofuel cells
An enzymatic biofuel cell (EBFC) was fabricated by combining top-down carbon microelectromechanical systems and bottom-up electrophoretic deposition. The developed 3D graphene/enzyme network based EBFC generated a maximum power density of 136.3 μW cm−2 at 0.59 V.
Plasmon enhanced organic devices utilizing highly ordered nanoimprinted gold nanodisks and nitrogen doped graphene
High performance organic devices were successfully demonstrated with the presence of highly ordered nanoimprinted Au nanodisks.
N-doped graphene nanoribbons as efficient metal-free counter electrodes for disulfide/thiolate redox mediated DSSCs
Nitrogen-doped graphene nanoribbons (N-GNRs) were prepared by thermal treatment of the as-zipped graphene oxide nanoribbon in NH3 gas. The resultant N-GNRs were found to act as efficient metal-free counter electrodes in DSSCs.
The enhanced efficiency of graphene–silicon solar cells by electric field doping
The efficiency of graphene–silicon (Gr–Si) Schottky junction solar cells can be effectively improved by electric field doping based on the employment of a top-gate to the cell or polarization of a ferroelectric polymer layer integrated in the cell.
Additive-free thick graphene film as an anode material for flexible lithium-ion batteries
This work demonstrates a simple route to develop mechanically flexible electrodes for Li-ion batteries (LIBs) that are usable as lightweight effective conducting networks for both cathodes and anodes.
Core–shell Co@Co3O4 nanoparticle-embedded bamboo-like nitrogen-doped carbon nanotubes (BNCNTs) as a highly active electrocatalyst for the oxygen reduction reaction
The catalytic activity for the oxygen reduction reaction (ORR) could be adjusted via the controllable oxidization of Co/BNCNTs.
About this collection
This themed issue showcases recent research in graphene science and its importance in applications, including developments in device architectures, large-scale processes, in-line quality control tools, and manufacturing processes for energy devices. The issue is guest-edited by Rashid Yusoff (Kyung Hee University, Korea), Liming Dai (Case Western Reserve University, USA), Hui-Ming Cheng (Shenyang National Laboratory for Materials Science, China) and Jie Liu (Duke University, USA).