“Water in Ionic Liquid” Electrolyte Toward Supercapacitors With High Operation Voltage, Long Lifespan, and Wide Temperature Compatibility

Battery energy, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 2, 2025

ABSTRACT Aqueous electrolytes, with their inherent safety, low cost, and eco‐friendliness, provide a promising alternative for energy storage devices, but application is limited due to the narrow electrochemical stability window of water. Using super‐concentrated electrolytes has been demonstrated effectives in expanding aqueous electrolytes. However, this approach also brings several challenges, including decreased ionic conductivity, poor wettability, increased temperature sensitivity near‐saturated salt concentrations. In study, we employed water‐miscible liquid (i.e., 1‐butyl‐3‐methylimidazolium trifluoromethanesulfonate) break solubility limitations faced created new “water liquid” electrolyte that simultaneously featured broad window, decent wide compatibility. Moreover, prototype double‐layer supercapacitor utilizing demonstrates outstanding performance characteristics, high operating voltage (2.6 V), excellent rate capability 81% capacitance retention from 0.5 30 A g –1 , remarkable cyclic 75% after 120,000 cycles, along compatibility –20°C 60°C. These findings not only insights into engineering offer pathway designing innovative devices balanced performance.

Language: Английский

---

Engineering surface sulfur vacancies of cobalt-doped nickel sulfide arrays induced by Ar plasma treatment to promote oxygen evolution reaction

International Journal of Hydrogen Energy, Journal Year: 2025, Volume and Issue: 102, P. 1084 - 1092

Published: Jan. 14, 2025

Language: Английский

---

Integrated Janus gel with bilayered heterostructure for high-performance supercapacitors

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 686, P. 487 - 497

Published: Feb. 1, 2025

Language: Английский

---

Regulating Interface Engineering by Helmholtz Plane Reconstructed Achieves Highly Reversible Zinc Metal Anodes

Advanced Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 28, 2025

The rampant dendrite growth and notorious parasitic reactions significantly compromise the stability of zinc anodes in aqueous metal batteries, presenting substantial for their practical applications. Herein, this work proposes a synergistic strategy that reconstructs Helmholtz plane to precisely regulate interface chemistry between anode electrolyte. Experimental investigations theoretical calculations demonstrate even small amount pyridine oxide (PNO) additive effectively alters coordination environment reorganizes solvation sheath Outer Plane (OHP). Simultaneously, PNO molecules preferentially adsorbed on surface, displacing active water from Inner (IHP). Through regulation both OHP IHP, ions achieve compact dense deposition along Zn (002) crystal plane, while catalyzed by are suppressed. Consequently, symmetric cell incorporating demonstrates stable cycling performance, maintaining more than 2300 h at 1 mA cm-2 sustaining over 400 high depth discharge 85%. Furthermore, Zn||AQ retains 80% its capacity after 3000 cycles exhibits outstanding under material mass loading (22 mg cm-2) using modified

Language: Английский

---

Tailoring the Discharge Performance of Aqueous Mg-Air Batteries by Salicylates Derivatives

Published: Jan. 1, 2025

Language: Английский

---

Water-in-Salt Electrolytes: Advances and Chemistry for Sustainable Aqueous Monovalent-Metal-Ion Batteries

Batteries, Journal Year: 2025, Volume and Issue: 11(4), P. 120 - 120

Published: March 22, 2025

Electrolytes play a vital role in the performance and safety of electrochemical energy storage devices, such as lithium-ion batteries (LIBs). While traditional LIBs rely on organic electrolytes, these flammable solutions pose risks require expensive, moisture-sensitive manufacturing processes. Aqueous electrolytes offer safer, more cost-effective alternative, but their narrow window, corrosivity to electrodes, enabling dendritic growth metal anodes limit practical applications. Water-in-salt (WiSEs) have emerged promising solution challenges. By significantly reducing water activity forming stable solid–electrolyte interphase (SEI), WiSEs can expand stability inhibit material dissolution, suppress growth. This unique SEI formation mechanism, which is similar that observed contributes improved WiSE-based batteries. Additionally, altered solvation structure minimizes presence free molecules, further stabilizing activity. review comprehensively examines composition, mechanisms, characterization application monovalent-metal-ion

Language: Английский

---

Modulating Solvation and Electric Double-Layer Configuration for High-Voltage Supercapacitors

Energy storage materials, Journal Year: 2025, Volume and Issue: unknown, P. 104267 - 104267

Published: April 1, 2025

Language: Английский

---

Regulating the gradient water distribution via hydro-philic/phobic compositional design in ionogels for stable zinc ion batteries

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162991 - 162991

Published: April 1, 2025

Language: Английский

---

Tailoring the discharge performance of aqueous Mg-air batteries by salicylate derivatives

Journal of Power Sources, Journal Year: 2025, Volume and Issue: 645, P. 237208 - 237208

Published: May 2, 2025

Language: Английский

---

Self-Assembled Interfacial Protective Layer Toward High-Performance Aqueous Zinc-Ion Batteries

Electrochimica Acta, Journal Year: 2024, Volume and Issue: unknown, P. 145587 - 145587

Published: Dec. 1, 2024

Language: Английский

---