Carbon Quantum Dot-Mediated CoAl-Layered Double Hydroxide on Hematite for Boosted Photoelectrochemical Sensing of Hydrogen Peroxide DOI
Yuting Zheng, Jiaqi Lv, Jiaying Lu

et al.

ACS Applied Nano Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 10, 2024

As an important compound in various industries and metabolic processes the human body, high concentrations of hydrogen peroxide (H2O2) can cause serious injuries to humans other organisms. Thus, it is great significance develop a rapid, sensitive, practical method for detection H2O2. Herein, carbon quantum dot-mediated CoAl-layered double hydroxide (CQDs/CoAl-LDH) was decorated on hematite (α-Fe2O3) photoelectrode via simple one-pot hydrothermal method. The resultant CQDs/CoAl-LDH/α-Fe2O3 exhibited excellent photoelectrochemical (PEC) sensing toward H2O2 with sensitivities 92.10 39.27 μA mM–1 cm–2 linear range 0.001–0.9 0.9–2 mM, respectively, low limit (0.02 μM, S/N = 3) at 0 V vs SCE, as well good selectivity, stability, reproducibility, reliability. investigation mechanism revealed that CQDs could not only mediate growth CoAl-LDH expose active sites but also improve electroconductivity facilitate charge transfer, while rapidly extract photogenerated holes separation provide catalytic oxidation. synergistic effect significantly boosted PEC activity α-Fe2O3 strategy boosting performance importance semiconductor photoelectrodes.

Language: Английский

Rearrangement of Pore Structure-Enabled Micropore-Dominant N,O Co-Doped Carbon for Ultrafast Charge/Discharge Rate Supercapacitors at Commercial-Scale Mass Loading DOI
Lili Jiang, Huimin Shi, Mingxuan Han

et al.

ACS Sustainable Chemistry & Engineering, Journal Year: 2024, Volume and Issue: unknown

Published: Dec. 8, 2024

N-doped porous carbon materials possess abundant pores and nitrogen functionalities, holding significant potential for supercapacitors. However, achieving precise control of the pore structure to enhance electrochemical performance remains challenging in large-scale production commercial electrode materials. Herein, Chinese yam, a rhizome plant rich dopamine, is selected as precursor prepare N,O-codoped hierarchical (N/O-PC-3) via one-step carbonization activation process. The precisely controlled by adjusting degree aggregation zinc-containing hydrolysates biomass through synergistic action ZnCl2 (activating agent) NH4Cl (nitrogen source). Due its micropore-dominant structure, high (10.5 at. %) oxygen (13.1 content, along with good electronic conductivity excellent wettability, N/O-PC-3 exhibits remarkable frequency response, an ultrahigh rate up 5 V s–1 gravimetric, volumetric, areal capacitances 414 F g–1, 311 cm–3, 23.8 μF cm–2 at 1 A respectively. It also demonstrates capability (326 g–1 100 79% capacitance retention). Even mass loading 15 mg cm–2, achieves gravimetric 223 g–1. assembled symmetric supercapacitor delivers energy density 22.9 W h kg–1 power 102.9 kg–1, making it highly desirable practical application storage. Additionally, this work offers straightforward approach controlling

Language: Английский

Citations

49
Heteroatom-doped hierarchically porous thick bulk carbon derived from a Pleurotus eryngii/lignin composite: a free-standing and high mass loading electrode for high-energy-density storage DOI

Weisheng Yang,

Danning Wang,

Shu Feng

et al.

Green Chemistry, Journal Year: 2024, Volume and Issue: 26(8), P. 4633 - 4644

Published: Jan. 1, 2024

It is critical to prepare self-supported carbonaceous electrode materials that enable high-mass loading and efficient ion/electron transport through a simple sustainable method.

Language: Английский

Citations

16
Synthesis, characterization, and implementation of BaNiO3 perovskite nanoparticles as thin film supercapacitor electrode DOI

Abdul Niqash Janjua,

Aamir Ahmed, Anoop Singh

et al.

Energy Storage, Journal Year: 2024, Volume and Issue: 6(4)

Published: May 8, 2024

Abstract This work is the first attempt to explore supercapacitor applications of Barium nickelate (BaNiO 3 ) perovskite nanoparticles. The nanoparticles are synthesized using a simple combustion method and their morphology, elemental composition, so forth studied standard characterization methods such as x‐ray diffraction spectroscopy (XRD), field emission scanning electron microscopy (FESEM), forth. were found be hexagonal in shape, with an average particle size 16 nm, analysis confirms successful synthesis BaNiO For electrochemical studies, electrodes fabricated over wearable flexible conductive fabric (CF) substrate. A slurry paste applied CF dried overnight, thereby forming thin film electrode. electrode acts positive high specific capacitance 508.64 F g −1 at 2.2 current density. Upon increasing density, maintains 60% its displays 97% cyclic stability 5000 cycles. impedance (EIS) study indicates excellent conductivity electrode, bulk resistance 3.2 Ohms. performance also compared various previously reported works higher better stability. These findings suggest that nanoparticles‐based holds promise for utilization anode material applications.

Language: Английский

Citations

13
Rapid and in-depth reconstruction of fluorine-doped bimetallic oxide in electrocatalytic oxygen evolution processes DOI
Yutong Wang, Hui Feng,

Dong‐Feng Chai

et al.

Journal of Colloid and Interface Science, Journal Year: 2025, Volume and Issue: 684, P. 84 - 94

Published: Jan. 13, 2025

Language: Английский

Citations

2
Synthesis of environmentally-friendly carbon quantum dots from orange juice for selective detection of Fe3+ ions, antibacterial activity, and bio-imaging applications DOI
K. Kasirajan,

M. Karunakaran,

H. K. Choi

et al.

Journal of environmental chemical engineering, Journal Year: 2024, Volume and Issue: 12(5), P. 113535 - 113535

Published: July 9, 2024

Language: Английский

Citations

9
Nickel Cobalt Sulfide Nanosheets on Cotton Fabric‐Derived Carbon Substrates as Self‐Standing Binder‐Free Electrodes for Asymmetric All‐Solid‐State Supercapacitors DOI Creative Commons
Yuan Yue, Shao‐Wei Bian

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

Published: March 22, 2025

ABSTRACT Cobalt nickel sulfide (Ni‐Co‐S), a typical bimetallic sulfide, is regarded as promising electrode material for supercapacitors (SCs). In this study, the electrodeposition process employed to grow vertically aligned Ni‐Co‐S nanosheets on carbon film (CF) substrate derived from cotton fabrics. The conductive and porous CF not only ensures uniform distribution of but also offers an efficient pathway transportation electrons electrolyte ions. nanosheet arrays, characterized by their small thickness open pores, facilitate provide rapid diffusion path ions expose sufficient active surfaces charge storage. synergistic effect resulting rational combination endows with high areal capacitance 1800 mF cm −2 at 2 mV s −1 remarkable mechanical flexibility. Furthermore, when all‐solid‐state asymmetric SC device assembled, energy density 324.1 mWh achieved power 2252.4 mW .

Language: Английский

Citations

1
Lignosulfonate-Assisted Synthesis of Porous Carbon-Supported MnO2 Composites with Reinforced Interface Bonding for High-Performance Asymmetric Supercapacitors DOI
Fangbao Fu, Xueqing Qiu, Dongjie Yang

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2024, Volume and Issue: 63(18), P. 8239 - 8249

Published: April 25, 2024

Carbon/transition metal oxide composites exhibit promising potential as electrode materials for energy storage, but regulating their interfacial composite structures remains a formidable challenge. In this work, we develop lignosulfonate-assisted synthesis strategy to fabricate porous carbon-supported MnO2 (LSC/MnO2-2) with robust interface asymmetric supercapacitors (ASCs). The functionalized lignin carbon, achieved through π–π interactions lignosulfonate, exhibited improved dispersibility, thereby facilitating the deposition of onto carbon matrix. Consequently, LSC/MnO2-2 demonstrates uniform loading and enhanced bonding. interaction between Mn sites lignosulfonate-functionalized substrate can promote electron transfer ion kinetics, effectively activating electrochemical activity MnO2. as-prepared high specific capacitances 750 F/g at 0.5 A/g 400 10.0 in 1 M KOH electrolyte. Furthermore, assembled ASC exhibits an outstanding density 54.4 Wh/kg 998.2 W/kg excellent cyclic stability (94.7% retention over 10,000 cycles 2.0 A/g). This study presents alternative method precisely control oxides materials, aiming enhance performance composites.

Language: Английский

Citations

5
Plasma-assisted surface modification of MXene/carbon nanofiber electrodes for electrochemical energy storage DOI
Ali Mohammad Latifi, M. Nilkar, S. Jafari

et al.

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 100, P. 113740 - 113740

Published: Sept. 13, 2024

Language: Английский

Citations

5
Lignin nanoparticles-based carbon aerogels with 3D interconnected framework supported nickel‑cobalt layered double hydroxide nanosheets for high-performance hybrid supercapacitors DOI
Rui Lou, Longhua Dong,

Qihang Cao

et al.

Journal of Energy Storage, Journal Year: 2024, Volume and Issue: 104, P. 114573 - 114573

Published: Nov. 15, 2024

Language: Английский

Citations

4
1D hollow tubular/2D nanosheet hybrid dimensional porous carbon prepared by one-step carbonization using natural minerals as templates for supercapacitors DOI Creative Commons
Fangfang Liu, Chao Zhang, Weiwei Huang

et al.

RSC Advances, Journal Year: 2024, Volume and Issue: 14(19), P. 13190 - 13199

Published: Jan. 1, 2024

The reasonable construction of one-dimensional (1D)/two-dimensional (2D) hybrid dimensional porous carbon materials with complementary advantages and disadvantages is an important approach to addressing the structural performance deficiencies single materials, while also significantly improving electrochemical super-capacitors. In this study, 1D hollow tubular/2D nanosheet was synthesized through one-step carbonization using fibrous brucite 2D layered magnesium carbonate hydroxide as templates. By adjusting feed ratio templates, morphology, pore structure specific surface area (SSA) prepared were controlled. carbons characterized scanning electron microscope (SEM), X-ray diffraction (XRD), photoelectron spectroscopy (XPS) nitrogen adsorption-desorption. And their studied by cyclic voltammograms (CV), galvanostatic charge/discharge (GCD) impedance (EIS). results show that use templates different dimensions influences structure, SSA carbon. (3F) exhibits a high capacitance excellent cycling stability. 3F demonstrates 245.3 F g

Language: Английский

Citations

3