Experimental and computational analysis of the structure-activity relationship of ionic gel electrolytes based on bistrifluoromethanesulfonimide salts for supercapacitors

Journal of Materiomics, Journal Year: 2024, Volume and Issue: 10(6), P. 1222 - 1233

Published: Jan. 23, 2024

Ionic gel electrolytes (IGEs) are emerging as promising components for the development of next-generation supercapacitors, offering benefits in terms safety, cost-effectiveness, and flexibility. The ionic conductivity, stability mechanical properties electrolyte important factors to be considered key improving performance supercapacitor. However, structure-activity relationship between internal structure gels supercapacitor is not fully understood. Herein, intuitive regular was revealed by combining computational simulation experiment. In liquid ([EMIM][TFSI]) has a high self-diffusion coefficient calculated molecular dynamics (MDS), which conducive transfer then improves conductivity. radial distribution function (RDF) MDS shows that larger g(r) particles polymer network, stronger interaction. For stability, based on [EMIM][TFSI] [EOMIM][TFSI] liquids have higher density functional theory (DFT) binding energy, reflected excellent thermal capacitor cycle stability. Based pore size stress-strain characterization network ([ME3MePy][TFSI] [BMIM][TFSI] additive), highly crosslinked aggregates significantly reduces mesoporous plays leading role network. By using this strategy, it will possible design ideal achieve an performance.

Language: Английский

---

Flexible, tough and high-performing ionogels for supercapacitor application

Journal of Materiomics, Journal Year: 2024, Volume and Issue: 11(1), P. 100833 - 100833

Published: Feb. 7, 2024

Ionogels are an attractive class of materials for smart and flexible electronics prepared from the combination a polymer ionic liquid which is entrapped in this matrix. provide continuous conductive phase with high thermal, mechanical, chemical stability. However, because higher percentage liquids it difficult to obtain ionogel conductivity mechanical stability, very important application point view. In work, films flexibility, excellent conductivity, exceptional stability were using polyvinyl alcohol as host matrix 1-ethyl-3-methylimidazolium hydrogen sulfate water solvent energy storage application. The exhibited good along sustaining strain more than 100% at room temperature low temperature, ability withstand twisting up 360° different bending conditions, 5.12 × 10−3 S/cm. supercapacitor cell fabricated optimized film showed capacitance 39.9 F/g power densities 5.5 Wh/kg 0.3 kW/kg, respectively confirming suitability ionogels

Language: Английский

---

Dual-function highly oxidative potassium salts empowering high-performance transition metal oxide/activated carbon for hybrid aqueous supercapacitors

Carbon, Journal Year: 2024, Volume and Issue: 224, P. 119080 - 119080

Published: March 23, 2024

Language: Английский

---

Coal-based activated carbon prepared by H2O activation process for supercapacitors using response surface optimization method

Frontiers of Chemical Science and Engineering, Journal Year: 2024, Volume and Issue: 18(6)

Published: May 15, 2024

Language: Английский

---

Elucidating the redox activity of cobalt-1,2,3,4-cyclopentane-tetracarboxylic acid and 1,2,4,5-benzene-tetracarboxylic acid-based metal–organic frameworks for a hybrid supercapacitor

RSC Advances, Journal Year: 2024, Volume and Issue: 14(3), P. 1655 - 1664

Published: Jan. 1, 2024

The development of electrode materials with extraordinary energy densities or high power has experienced a spectacular upsurge because significant advances in storage technology.

Language: Английский

---

Nitrogen-Doped Hierarchical Nanoporous Carbon Materials from Discarded Polyurethane Sponges via One-Step Double-Activation Method for Double-Layer Capacitors

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(3), P. 2879 - 2888

Published: Jan. 31, 2024

The self-induced N-doped micropore and mesopore hierarchical nanoporous carbon (NPC-CZ) was synthesized from a discarded shock-proof polyurethane sponge by using one-step physical/chemical double-activation method with the introduction of ZnCl2 CO2. activation generated numerous micropores mesopores, while subsequent CO2 treatment further enhanced microporosity pore volume NPC-CZ. Besides, carbonation process formed oxygen-containing functional groups converted self-contained abundant amino in to N atom doping, which additional active sites improved surface wettability ability. NPC-CZ has high specific area 1108.9 m2 g–1 an structure. capacitances were found reach 211.7 F at current density 0.5 A 2 M KOH electrolyte solution, operating within potential window −1 0 V. Additionally, excellent cycle stabilization demonstrated impressive capacitance retention 84.2% after undergoing 20000 cycles higher 5 g–1. Furthermore, when employed as electrode materials symmetric supercapacitors, achieved power 600 W kg–1 maintaining energy 6.33 Wh kg–1. This research offers innovative perspectives on transformation sponges into highly nanostructured for capacitor electrodes.

Language: Английский

---

Hydroquinone-mediated, bio-renewable corn starch electrolyte assembled with corn leaf-derived activated carbon for a high-performance, sustainable supercapacitor

Biomass and Bioenergy, Journal Year: 2024, Volume and Issue: 182, P. 107095 - 107095

Published: Feb. 5, 2024

Language: Английский

---

Fabricating N, P-Codoped Hierarchical Porous Carbons from Lignin via Assembled Templating and Activation Strategy for High-Performance Supercapacitors

Industrial & Engineering Chemistry Research, Journal Year: 2024, Volume and Issue: 63(7), P. 3082 - 3091

Published: Feb. 9, 2024

The heteroatom-doped carbons are widely recognized as optimal electrode materials for energy storage yet challenges in their structural regulation. Here, an assembled templating and activation strategy is developed to synthesize N, P-codoped hierarchical porous from lignin (NP-HPLCs) supercapacitors. synthesis process involved carbonizing a lignin/F127/Mg2(OH)2CO3 assembly with KOH (NH4)2HPO4, wherein the generated MgO template activator facilitated formation of micromesopores, while (NH4)2HPO4 served N/P dopant. resultant NP-HPLCs exhibited high accessible surface area 1302 m2/g levels (N: 4.40 atom %, P: 1.47 %) three-dimensional structures, thereby promoting ion diffusion transport. Upon these advantages, carbon achieved remarkable specific capacitance up 358 F/g at 0.5 A/g. Moreover, fabricated supercapacitor delivered density 6.76 Wh/kg 137 W/kg excellent cyclic stability. This work offers valuable reference design advanced devices.

Language: Английский

---

Molten salt-assisted fabrication of hierarchical porous carbon derived from lignite for Zn-ion hybrid supercapacitors

Materials Letters, Journal Year: 2024, Volume and Issue: 362, P. 136180 - 136180

Published: Feb. 19, 2024

Language: Английский

---

Preparation of cyclodextrin polymer-functionalized polyaniline/MXene composites for high-performance supercapacitor

RSC Advances, Journal Year: 2024, Volume and Issue: 14(19), P. 13685 - 13693

Published: Jan. 1, 2024

PANI was successfully grown in situ on the surface of MXene derived from CDP. The composite exhibited a good specific area and high capacitance.

Language: Английский

---