Red Carbon Dots Sensitized Ni‐Doped 2D MoS2 Nanosheets as Electrode Materials for Visible‐Light Active Photorechargeable Supercapacitors DOI Creative Commons

Vinay Kumar Sriramadasu,

Nagabandi Jayababu,

Santanu Bhattacharyya

et al.

Small Structures, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 12, 2024

Developing photorechargeable electrochemical devices has become a new paradigm for addressing the efficient utilization of solar energy renewable research. Herein, unique 0D/2D heterostructure made red carbon dots (RCDs) and Ni‐doped MoS 2 nanosheets (NMS) been designed as electrode materials supercapacitor device. Polyvinyl alcohol (PVA) used transparent matrix electrode, which retains intrinsic optoelectronic properties composite. Photophysical suggest that RCDs act light‐harvesting well visible‐light photosensitizer Suitable bandgap alignment both counterparts facilitates photoinduced charge separation. Finally, composite utilized visible‐light‐sensitive Almost 95% enhancement in capacitance value observed under light irradiation compared to dark condition. Furthermore, wavelength dependence device performances, photo charging, galvanostatic discharging measurements have investigated analyze overall performance The is capable retaining its 97.25% capacity after 1000 full cycles, suggesting excellent photostability. plausible mechanism rechargeable supercapacitance discussed detail.

Language: Английский

Emerging Zinc‐Ion Capacitor Science: Compatible Principle, Design Paradigm, and Frontier Applications DOI
Jianhui Zhu,

Jie Tai,

Tao Liu

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 30, 2024

Abstract The development of high energy/power density and long lifespan device is always the frontier direction attracts great research attention in energy storage fields. Zinc‐ion capacitors (ZICs), as an integration zinc‐ion batteries supercapacitors, have been widely regarded one viable future options for storage, owing to their variable system assembly method potential performance improvement. However, ZICs still locate at initial stage until now, how construct suitable systems different condition challenging. Herein, recent advance rational design reviewed order related theory including compatible principle paradigm. It starts with a systematically summary fundamental well motivation. Then, electrode materials are classified into capacitor‐type battery‐type based on mechanism, strategies progress these two‐type candidates comprehensively discussed, aiming reveal inherent relationship between devices component architecture materials. Beyond that, perspectives this emerging field also given, expecting guide construction high‐performance practical applications boost its development.

Language: Английский

Citations

7
g-C3N4 modified MoS2 photoelectrodes for stable photo-assisted zinc-ion capacitors DOI

Changhua Mi,

Xin Sun, Xiaojing Yin

et al.

Science China Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 8, 2025

Language: Английский

Citations

0
2D Rhenium- and Niobium-Doped WSe2 Photoactive Cathodes in Photo-Enhanced Hybrid Zn-Ion Capacitors DOI Creative Commons
Monaam Benali, Jalal Azadmanjiri, Martin Loula

et al.

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: 7(12), P. 14102 - 14114

Published: June 18, 2024

Designing a multifunctional device that combines solar energy conversion and storage is an appealing promising approach for the next generation of green power sustainable society. In this work, we fabricated single-piece incorporating undoped WSe2, Re- or Nb-doped WSe2 photocathode, zinc foil anode system enabling light-assisted rechargeable aqueous metal cell. Comparison structural, optical, photoelectric characteristics doped has further confirmed ionic insertion donor (rhenium niobium) plays important role in enhancing photoelectrochemical properties. The electrochemical cell consisting Re-doped (as photoactive cathode as anode) showed best photodriven enhancement specific capacitance around 45% due to efficient harvesting visible light irradiation. assembled exhibited loss 20% its initial after 1500 galvanostatic charge–discharge cycles at 50 mA g–1. also provided density 574.21 mWh kg1– 5906 mW 15 Under otherwise similar conditions, pristine photoenhanced induced 43% 27% g–1 supplied 436.4 202 kg1–, respectively. As result, reasonable improvement obtained by Re-WSe2 zinc-ion capacitor could provide facile constructive way achieve highly low-cost solar-electrochemical system.

Language: Английский

Citations

0
Red Carbon Dots Sensitized Ni‐Doped 2D MoS2 Nanosheets as Electrode Materials for Visible‐Light Active Photorechargeable Supercapacitors DOI Creative Commons

Vinay Kumar Sriramadasu,

Nagabandi Jayababu,

Santanu Bhattacharyya

et al.

Small Structures, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 12, 2024

Developing photorechargeable electrochemical devices has become a new paradigm for addressing the efficient utilization of solar energy renewable research. Herein, unique 0D/2D heterostructure made red carbon dots (RCDs) and Ni‐doped MoS 2 nanosheets (NMS) been designed as electrode materials supercapacitor device. Polyvinyl alcohol (PVA) used transparent matrix electrode, which retains intrinsic optoelectronic properties composite. Photophysical suggest that RCDs act light‐harvesting well visible‐light photosensitizer Suitable bandgap alignment both counterparts facilitates photoinduced charge separation. Finally, composite utilized visible‐light‐sensitive Almost 95% enhancement in capacitance value observed under light irradiation compared to dark condition. Furthermore, wavelength dependence device performances, photo charging, galvanostatic discharging measurements have investigated analyze overall performance The is capable retaining its 97.25% capacity after 1000 full cycles, suggesting excellent photostability. plausible mechanism rechargeable supercapacitance discussed detail.

Language: Английский

Citations

0