A material designed for better supercapacitor applications

Supercapacitors are next-generation energy storage devices that could redefine our approach to renewable energy and environmental conservation. A team of researchers has managed to improve the electrochemical performance of metal oxides, thus opening new perspectives in the area of ​​energy storage.

O supercapacitorsalso known as ultracapacitors or electrical double layer capacitors (EDLC), are advanced energy storage devices with unique characteristics.

Unlike traditional batteries, supercapacitors store energy through electrostatic charge separation at the interface between an electrolyte and a large-area electrode. This mechanism allows for the rapid storage and release of energy, allowing supercapacitors to deliver bursts of high power and have an exceptional lifetime.

The role of supercapacitors in renewable energy

In the field of renewable energy, supercapacitors serve as essential components for energy storage and distribution systems. Their ability to store and release energy quickly makes them particularly suitable for smoothing out intermittent energy sources such as solar and wind, ensuring a constant and reliable power supply.

In terms of environmental conservation, supercapacitors stand out as sustainable alternatives to traditional energy storage devices. Their long lifespan, fast loading/unloading capabilities and reduced environmental impact make them environmentally friendly choices.

Furthermore, its application in electric vehicles and hybrid systems promotes the transition to cleaner transport, in line with global efforts to reduce carbon emissions and combat climate change.

Oxygen vacancy engineering: a promising strategy

Recently, a research team led by Professor Jianqiang Bi managed to synthesize NiFe2O4−δ, characterized by a profusion of oxygen vacancies, thanks to a heat treatment process in an activated carbon bed. This meticulous treatment made it possible to obtain NiFe2O4−δ, which presented conductivity superior and a notable 3.7 times increase in capacitance compared to its NiFe2O4 equivalent.

This observed improvement in electrochemical properties highlights the crucial role played by oxygen vacancies in optimizing the performance of metal oxides. The results of their study strongly support the idea that the deliberate introduction of oxygen vacancies offers considerable potential for improving the electrochemical properties of metal oxides, thus positioning them as promising materials for electrodes of supercapacitors.

A significant advancement in the field of energy storage

This new understanding opens avenues for potential applications in the field of energy storagehighlighting the significant impact of oxygen vacancy engineering on the development of high-performance supercapacitors.

Professor Jianqiang Bi’s research team also includes Xicheng Gao, Linjie Meng, Lulin Xie and Chen Liu from Shandong University, China. Their study was supported by the Shandong Natural Science Foundation Key Basic Research Projects, the Shandong Science and Technology Development Project and the Shandong Natural Science Foundation.

Article: “The importance of low-carbon bioalcohols and bioketone fuels for clean propulsion systems” – 10.1016/j.fuel.2023.130641


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