High-Ionic-Conductivity Sodium-Based Ionic Gel Polymer Electrolyte for High-Performance and Ultrastable
Thi Huyen Nguyen1, Dawoon Lee1, Yongjun Song1
1Department of Photonics and Nanoelectronics, Hanyang University, Ansan15588, Republic of Korea.
ACS Applied Materials & Interfaces
|January 9, 2023
Summary
This study developed a cost-effective sodium-based ionic gel polymer electrolyte (IGPE) for high-performance microsupercapacitors. The new IGPE demonstrates excellent ionic conductivity and electrochemical stability, paving the way for advanced solid-state energy storage solutions.
Area of Science:
- Materials Science
- Electrochemistry
- Energy Storage
Background:
- Sodium-based ionic gel polymer electrolytes (IGPEs) offer a cost-effective alternative to lithium-based systems for energy storage.
- Existing sodium-based IGPEs exhibit limitations in ionic conductivity and electrochemical stability compared to their lithium counterparts, hindering their use in high-performance microsupercapacitors (MSCs).
Purpose of the Study:
- To develop a high-performance sodium-based IGPE with enhanced ionic conductivity and electrochemical stability.
- To fabricate and evaluate MSCs utilizing the novel sodium-based IGPE for potential applications in portable and stationary energy solutions.
Main Methods:
- Synthesized a sodium-based IGPE using poly(ethylene glycol) diacrylate (PEGDA) as a polymer matrix, sodium perchlorate (NaClO4) as the salt, and tetramethylene glycol ether (G4) with 1-ethyl-3-methylimidazolium bis(triflouromethylsulfonyl)imide (EMIM-TFSI) as ionic liquid components.
- Fabricated a microsupercapacitor (MSC) with an interdigital reduced graphene oxide electrode and the synthesized IGPE.
- Characterized the electrochemical performance of the MSC, including ionic conductivity, power density, energy density, and cycling stability.
Main Results:
- The developed sodium-based IGPE achieved an ionic conductivity of up to 0.54 mS/cm at room temperature.
- The fabricated MSC exhibited a high power density of ~2500 W/kg and a maximum energy density of ~0.7 Wh/kg.
- The MSC demonstrated excellent cycling stability, retaining approximately 98.9% of its capacitance after 20,000 cycles within a 0.0 to 1.0 V potential window.
Conclusions:
- The novel sodium-based IGPE is a promising material for high-performance and stable microsupercapacitors.
- The developed IGPE-based MSCs show potential as solid-state energy sources for various applications.
- The cost-effectiveness and performance of these sodium-based MSCs make them a viable alternative to lithium-based energy storage devices.
Related Concept Videos
01:17Ion Exchange
632
Ion exchange chromatography separates charged molecules from a solution by reversibly exchanging them with mobile, or 'active', ions associated with the oppositely charged stationary phase. This method can be used to separate ions, soften and deionize water, and purify solutions. The polymers comprising the ion-exchange column are high-molecular-weight and chemically stable polymers, crosslinked to be porous and essentially insoluble. They are also functionalized with either acidic or...
632
01:30Capillary Electrophoresis: Applications
485
Capillary electrophoretic separations offer various modes, each with unique applications. These modes include capillary zone electrophoresis, capillary gel electrophoresis, capillary array electrophoresis, capillary isoelectric focusing, capillary isotachophoresis, micellar electrokinetic chromatography, and capillary electrochromatography.
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
Capillary zone electrophoresis (CZE) separates ionic components based on their electrophoretic mobility. It has been used to separate proteins, amino acids,...
485
01:25MOS Capacitor
904
A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
The metal gate is typically made from highly conductive materials such as aluminum or polysilicon. Beneath the metal gate lies a thin layer of...
904