Andinet Ejigu
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View article: Membraneless biphasic redox flow batteries: Interfacial effects and generalisation of the chemistry
Membraneless biphasic redox flow batteries: Interfacial effects and generalisation of the chemistry Open
The wider adoption of redox flow batteries (RFBs) is hindered partly by the high cost of ion-exchange membranes. Membrane-free batteries have recently emerged as a potential alternative to traditional RFBs, with the redox anolyte and catho…
View article: Nanosized Chevrel phases for dendrite-free zinc–ion based energy storage: unraveling the phase transformations
Nanosized Chevrel phases for dendrite-free zinc–ion based energy storage: unraveling the phase transformations Open
Nanoscale tailoring of Chevrel phase Mo 6 S 8 unveils its properties as a host for zinc ions. Rapid ion transport, coupled with the emergence of a previously unknown phase, transform the understanding of zinc ion (de)intercalation in these…
View article: Anion Intercalation into Graphite Drives Surface Wetting
Anion Intercalation into Graphite Drives Surface Wetting Open
The unique layered structure of graphite with its tunable interlayer distance establishes almost ideal conditions for the accommodation of ions into its structure. The smooth and chemically inert nature of the graphite surface also means t…
View article: Quinone voltammetry for redox-flow battery applications
Quinone voltammetry for redox-flow battery applications Open
The electrochemical behaviour of octafluoro-9,10-anthroquinone is reported, motivated by the use of this lipophilic quinone as the negative electrode couple (anolyte) in redox flow battery applications. At low concentrations, the reduction…
View article: Optimization of Electrolytes for High-Performance Aqueous Aluminum-Ion Batteries
Optimization of Electrolytes for High-Performance Aqueous Aluminum-Ion Batteries Open
Aqueous rechargeable batteries based on aluminum chemistry have become the focus of immense research interest owing to their earth abundance, low cost, and the higher theoretical volumetric energy density of this element compared to lithiu…
View article: Nanoscale Chevrel-Phase Mo<sub>6</sub>S<sub>8</sub> Prepared by a Molecular Precursor Approach for Highly Efficient Electrocatalysis of the Hydrogen Evolution Reaction in Acidic Media
Nanoscale Chevrel-Phase Mo<sub>6</sub>S<sub>8</sub> Prepared by a Molecular Precursor Approach for Highly Efficient Electrocatalysis of the Hydrogen Evolution Reaction in Acidic Media Open
Developing a simple, safe, and efficient route for the preparation of nanoparticulate ternary Chevrel phases MxMo6S8 (CPs; where M = metal) is of great interest because of their applications in energy conversion and storage technologies. C…
View article: Reversible Electrochemical Energy Storage Based on Zinc-Halide Chemistry
Reversible Electrochemical Energy Storage Based on Zinc-Halide Chemistry Open
The development of rechargeable Zinc-ion batteries (ZIBs) has been hindered by the lack of efficient cathode materials due to the strong binding of divalent zinc ions with the host lattice. Herein, we report a strategy that eliminates the …
View article: High temperature supercapacitors using water-in-salt electrolytes: stability above 100 °C
High temperature supercapacitors using water-in-salt electrolytes: stability above 100 °C Open
The high temperature performance of water-in-salt electrolytes was investigated using a carbon-based electrode with commercial cell components.
View article: Understanding the electrochemistry of “water-in-salt” electrolytes: basal plane highly ordered pyrolytic graphite as a model system
Understanding the electrochemistry of “water-in-salt” electrolytes: basal plane highly ordered pyrolytic graphite as a model system Open
The stability of water-in-salt electrolyte systems is investigated using highly concentrated solutions of KF(aq) with graphite as a model system.
View article: Electrochemically Exfoliated Graphene Electrode for High-Performance Rechargeable Chloroaluminate and Dual-Ion Batteries
Electrochemically Exfoliated Graphene Electrode for High-Performance Rechargeable Chloroaluminate and Dual-Ion Batteries Open
The current state-of-the-art positive electrode material for chloroaluminate ion batteries (AIBs) or dual-ion batteries (DIBs) is highly crystalline graphite; however, the rate capability of this material at high discharge currents is sign…
View article: Electrochemical Exfoliation: On the Role of Transition Metal Salts During Electrochemical Exfoliation of Graphite: Antioxidants or Metal Oxide Decorators for Energy Storage Applications (Adv. Funct. Mater. 48/2018)
Electrochemical Exfoliation: On the Role of Transition Metal Salts During Electrochemical Exfoliation of Graphite: Antioxidants or Metal Oxide Decorators for Energy Storage Applications (Adv. Funct. Mater. 48/2018) Open
The quality of graphene produced by electrochemical exfoliation of graphite in aqueous solution is inferior to the material produced by mechanical exfoliation, due to the functionalization of carbon by reactive oxygen radical species deriv…
View article: On the Role of Transition Metal Salts During Electrochemical Exfoliation of Graphite: Antioxidants or Metal Oxide Decorators for Energy Storage Applications
On the Role of Transition Metal Salts During Electrochemical Exfoliation of Graphite: Antioxidants or Metal Oxide Decorators for Energy Storage Applications Open
A new approach is presented, based on the unexpectedly versatile role of transition metal ions, to produce high‐quality graphene via an anodic electrochemical exfoliation route, and the capability of the resultant material in energy storag…
View article: A simple electrochemical route to metallic phase trilayer MoS<sub>2</sub>: evaluation as electrocatalysts and supercapacitors
A simple electrochemical route to metallic phase trilayer MoS<sub>2</sub>: evaluation as electrocatalysts and supercapacitors Open
The development of a simple, scalable and reproducible technique for the synthesis of two-dimensional metallic phase MoS2nanosheets is of paramount importance in the field of catalysis and energy storage devices.
View article: Single Stage Simultaneous Electrochemical Exfoliation and Functionalization of Graphene
Single Stage Simultaneous Electrochemical Exfoliation and Functionalization of Graphene Open
Development of applications for graphene are currently hampered by its poor dispersion in common, low boiling point solvents. Covalent functionalization is considered as one method for addressing this challenge. To date, approaches have te…
View article: Developing energy efficient lignin biomass processing – towards understanding mediator behaviour in ionic liquids
Developing energy efficient lignin biomass processing – towards understanding mediator behaviour in ionic liquids Open
Environmental concerns have brought attention to the requirement for more efficient and renewable processes for chemicals production. Lignin is the second most abundant natural polymer, and might serve as a sustainable resource for manufac…