Enhancing Temperature-Optimized Ionic Liquid Electrolytes for High-Voltage, High-Energy Supercapacitors Utilizing Date Stone-Derived Carbon in Coin Cell Configuration

被引：0

作者：

Shuaibu, Abubakar Dahiru ^{[1
]}

Mirghni, Abdulmajid A. ^{[2
]}

Shah, Syed Shaheen ^{[3
]}

Hardianto, Yuda Prima ^{[2
,4
]}

Alzahrani, Atif Saeed ^{[1
,5
]}

Aziz, Md. Abdul ^{[2
]}

机构：

[1] King Fahd Univ Petr & Minerals, Mat Sci & Engn Dept, Dhahran, Saudi Arabia

[2] King Fahd Univ Petr & Minerals, Interdisciplinary Res Ctr Hydrogen Technol & Carbo, Dhahran, Saudi Arabia

[3] Kyoto Univ, Grad Sch Energy Sci, Socio Environm Energy Sci Dept, Kyoto, Japan

[4] King Fahd Univ Petr & Minerals, Phys Dept, Dhahran, Saudi Arabia

[5] King Fahd Univ Petr & Minerals, Interdisciplinary Res Ctr Sustainable Energy Syst, Dhahran, Saudi Arabia

来源：

BATTERY ENERGY | 2025年

关键词：

biomass-derived carbon; coin cell; energy density; energy storage; ionic liquid; supercapacitor; HIERARCHICAL POROUS CARBON; SOLID-STATE SUPERCAPACITORS; ACTIVATED CARBON; PERFORMANCE; ELECTRODES; BIOMASS; LIGNIN; OXIDE;

D O I：

10.1002/bte2.70005

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

This study investigates the advancement of coin cell supercapacitors (SCs) for sustainable, high-performance energy storage by employing biomass-derived date stone activated carbon with various ionic liquid (IL) electrolytes at different temperatures. The research reveals that SCs demonstrate both pseudocapacitive and electrochemical double-layer characteristics. Among the tested ILs, 1-Butyl-3-methylimidazolium trifluoromethanesulfonate (BMIMOTf) emerges as the most effective, achieving an impressive energy density of 129.9 Wh kg-1, a power density of 403.8 W kg-1, and a specific capacitance of 103.9 F g-1 at 0.5 A g-1. After 5000 cycles, the supercapacitor utilizing BMIMOTf maintains 97.3% of its initial capacitance and exhibits a Coulombic efficiency approaching 100%. Additionally, temperature-dependent analyses from room temperature to 50 degrees C reveal that higher temperatures boost the electrochemical performance of the SC, attributed to improved ionic conductivity. This research offers a more comprehensive understanding of how materials and electrolytes interact, emphasizing the capacity of BMIMOTf to foster innovations in eco-friendly energy storage solutions.

引用

页数：13

共 66 条

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