Ionic transport kinetics and enhanced energy storage in the electrode/poly(<i>N</i>-vinyl imidazole) interface for micro-supercapacitors

Krishnan, Karthik; Selvakumar, Kodirajan; Vijayaraghavan, Saranyan

doi:10.1039/d0ra08137j

Cited by 3 publications

(2 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is reasonable that the lone pair electrons can be available for both hydrogen‐bonding formation and metal‐ion coordination, which significantly induce the electronic properties. [ 30,31 ]…”

Section: Introductionmentioning

confidence: 99%

“…This is reasonable that the lone pair electrons can be available for both hydrogen-bonding formation and metal-ion coordination, which significantly induce the electronic properties. [30,31] In this work, the silver (Ag) included PVI is arranged between an electrochemically active electrode (Ag) and an inert electrode (Au) for fabricating the ECM-based memristor (Au/Ag/Ag-PVI/Au). Current-voltage (I-V) measurements showed stable resistive switching with higher ON/OFF resistance ratio (≈10 5 ) and good endurance characteristics (≥10 2 cycles) of the Ag-PVI memristor.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Unraveling the Atomic Redox Process in Quantum Conductance and Synaptic Events for Neuromorphic Computing

Krishnan

Vijayaraghavan

2022

Adv Elect Materials

Self Cite

View full text Add to dashboard Cite

Manipulation of atomic point contact (APC) in memristive devices is considered as an essential approach in emulating biological synaptic functions and paves the way for developing neuromorphic computing systems. In this article, the conductance modulation in a polyvinylimidazole (PVI)‐based memristor that mimics the synaptic functions underlying the sensory memory, short‐term memory, long‐term memory, and forgetting events of the human brain, is demonstrated. A detailed analysis of resistive switching, quantum conductance, and synaptic behaviors in the silver (Ag) included PVI memristor is investigated by means of DC sweep and pulse current–voltage (I–V) measurements. Based on the synaptic plasticity of the Ag‐PVI memristor, the biological synaptic functions such as learning and forgetting two images are mimicked using 5 × 5 synaptic memristor arrays. To explain the relationship between the atomic redox process and synaptic events in the memristor, the I–V/cyclic voltammetry study is introduced. As a consequence, the concentration of charges in the APC region increases as the conductance state increases. This study is essential in order to explore the progressive growth of APC under confined redox reaction in the electrochemical metallization‐based memristors for developing both synaptic devices and high‐density multilevel memories.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Unraveling the Atomic Redox Process in Quantum Conductance and Synaptic Events for Neuromorphic Computing

Krishnan

Vijayaraghavan

2022

Adv Elect Materials

Self Cite

View full text Add to dashboard Cite

show abstract

Facile synthesis of MgO-carbon nanocomposites for advanced capacitive electrode materials

Mondal,

Afzal,

Mondal

2024

Chem. Pap.

View full text Add to dashboard Cite

The current study aims to develop a unique approach for constructing an asymmetric supercapacitor utilising a nanocomposite of MgO-Carbon as electrode material. The geometrical surface area of the MgO-Carbon has shown to be highly porous with different porosities, and the value is 210 m 2 g − 1 . This supercapacitor operates with an aqueous electrolyte consisting of 1M KOH. The ndings indicate that the test cell exhibited exceptional electrochemical output within the voltage range of 0 to 1 V. The capacitance of the MgO-Carbon cell is measured to be 225 F g − 1 at a current density of 2 A g − 1 .According to research on cycling, the aforementioned cell has demonstrated the ability to maintain 97% of its original capacitance following 20,000 cycles. The ndings of this study suggest that the MgO-Carbon holds promise as an electrode material for the development of environmentally friendly and costeffective energy storage devices. This composite exhibit excellent energy and power densities, along with a prolonged cycle life.

show abstract

Polymer Electrolytes for Supercapacitors

Chen,

Holze

2024

Polymers

View full text Add to dashboard Cite

Because of safety concerns associated with the use of liquid electrolytes and electrolyte solutions, options for non-liquid materials like gels and polymers to be used as ion-conducting electrolytes have been explored intensely, and they attract steadily growing interest from researchers. The low ionic conductivity of most hard and soft solid materials was initially too low for practical applications in supercapacitors, which require low internal resistance of a device and, consequently, highly conducting materials. Even if an additional separator may not be needed when the solid electrolyte already ensures reliable separation of the electrodes, the electrolytes prepared as films or membranes as thin as practically acceptable, resistance may still be too high even today. Recent developments with gel electrolytes sometimes approach or even surpass liquid electrolyte solutions, in terms of effective conductance. This includes materials based on biopolymers, renewable raw materials, materials with biodegradability, and better environmental compatibility. In addition, numerous approaches to improving the electrolyte/electrode interaction have yielded improvements in effective internal device resistance. Reported studies are reviewed, material combinations are sorted out, and trends are identified.

show abstract

Ionic transport kinetics and enhanced energy storage in the electrode/poly(N-vinyl imidazole) interface for micro-supercapacitors

Abstract: The ionic charge transport kinetics in the poly(N-vinylimidazole) and energy storage at the electrode/poly(N-vinylimidazole) interfaces have been systematically studied for high performance micro-supercapacitors.

Cited by 3 publications

References 42 publications

Unraveling the Atomic Redox Process in Quantum Conductance and Synaptic Events for Neuromorphic Computing

Unraveling the Atomic Redox Process in Quantum Conductance and Synaptic Events for Neuromorphic Computing

Facile synthesis of MgO-carbon nanocomposites for advanced capacitive electrode materials

Polymer Electrolytes for Supercapacitors

Contact Info

Product

Resources

About