Reverse voltage pulse deposition of a porous polyaniline/Mn–Co sulfide composite cathode material for modified Zn-ion hybrid supercapacitors

Duong, Thi Lim; Doan, Tung Thanh; Tam, Le Thi; Dung, Ngo Thanh; Le, Tam The; Pham, Thi Nam; Trang, Nguyễn Thị Thu; Vernardou, Dimitra; Le, Top Khac; Nguyen, Van Tam; Tran, Lam Dai; Le, Lu Trong

doi:10.1039/d3nj01962d

New J. Chem.

2023

DOI: 10.1039/d3nj01962d

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Reverse voltage pulse deposition of a porous polyaniline/Mn–Co sulfide composite cathode material for modified Zn-ion hybrid supercapacitors

Thi Lim Duong¹,

Tung Thanh Doan²,

Le Thi Tam³

et al.

Abstract: For the purpose of expanding the working potential window and reducing the self-discharge for the Zn-ion hybrid supercapacitor, a positive electrode (cathode) of Mn-Co-sulfide-Polyaniline (MCS-PANi) composite coated on porous graphite...

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Cited by 2 publications

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Synthesis and Evaluation of Copper Oleate Nanoparticles Against Citrus Anthracnose Caused by Colletotrichum gloeosporioides: In Situ Experiments, In Vitro Bioassays, and Field Trials

Le,

Nguyen,

et al. 2024

ChemistrySelect

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Anthracnose in citrus is a severe disease caused by Colletotrichum species. Synthetic fungicides have been used to combat this citrus disease; however, they may have adverse health effects on humans and cause harmful environmental impacts. During a search for environmentally friendly fungicides, we successfully prepared organic copper (copper (II) oleate) nanoparticles by using natural chitosan polymer as a coating agent and stabilizer and by combining an exchange reaction and in situ coating method. Organic copper nanoparticles coated with chitosan polymer (Cu‐oleate@CS NPs) with Cu contents ranged from 5.0 to 6.0 % by weight. The nanoparticles have an average particle size ranging from 50 nm to 60 nm (TEM), covered by a layer of polymer with a thickness of about 10 to 12 nm. The analytical results of zeta potential and dynamic solution size showed that the nanoparticles are uniformly dispersed (90–120 nm by DLS), with high stability (zeta potential=−61.7 mV) and low cytoxicity to Vero healthy cell line. Cu‐oleate@CS NPs significantly inhibited the mycelial growth of C. gloeosporioides in vitro at 500 and 1000 μg/mL. In field trials, the best antifungal efficacy of Cu‐oleate@CS NPs against citrus anthracnose on orange plants was found at a spray concentration of 0.33 % with a disease control efficacy of 54.18 % at 14 days after the second spraying. Our study results demonstrated a novel preparation of Cu‐oleate@CS NPs and suggested that it could be used as a promising nanoformulation to control citrus anthracnose in vitro and in vivo.

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Synthesis and Evaluation of Copper Oleate Nanoparticles Against Citrus Anthracnose Caused by Colletotrichum gloeosporioides: In Situ Experiments, In Vitro Bioassays, and Field Trials

Le,

Nguyen,

et al. 2024

ChemistrySelect

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Nanostructured binary transition-metal-sulfides and nanocomposites as high-performance electrodes for hybrid supercapacitors

Sun,

Ren,

Gan

et al. 2024

Applied Physics Reviews

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Supercapacitors (SCs) are attractive as promising energy storage devices because of their distinctive attributes, such as high power density, good current charge/discharge ability, excellent cyclic stability, reasonable safety, and low cost. Electrode materials play key roles in achieving excellent performance of these SCs. Among them, binary transition metal sulfides (BTMSs) have received significant attention, attributed to their high conductivity, abundant active sites, and excellent electrochemical properties. This topic review aims to summarize recent advances in principles, design, and evaluation of the electrochemical performance for nanostructured BTMSs (including nickel–cobalt sulfides, zinc–cobalt sulfides, and copper–cobalt sulfides.) and their nanocomposites (including those carbon nanomaterials, transition metal oxides, binary transition metal oxides, transition metal sulfides, and polymers). Nanostructuring of these BTMSs and nanocomposites as well as their effects on the performance were discussed, including nanoparticles, nanospheres, nanosheets, nanowires, nanorods, nanotubes, nanoarrays, and hierarchitectured nanostructures. Their electrochemical performance has further been reviewed including specific capacitance, conductivity, rate capability, and cycling stability. In addition, the performance of hybrid supercapacitors (HSCs) assembled using the nanostructured BTMSs as the cathodes also have been summarized and compared. Finally, challenges and further prospects in the HSCs-based BTMS electrodes are presented.

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Reverse voltage pulse deposition of a porous polyaniline/Mn–Co sulfide composite cathode material for modified Zn-ion hybrid supercapacitors

Abstract: For the purpose of expanding the working potential window and reducing the self-discharge for the Zn-ion hybrid supercapacitor, a positive electrode (cathode) of Mn-Co-sulfide-Polyaniline (MCS-PANi) composite coated on porous graphite...

Cited by 2 publications

References 68 publications

Synthesis and Evaluation of Copper Oleate Nanoparticles Against Citrus Anthracnose Caused by Colletotrichum gloeosporioides: In Situ Experiments, In Vitro Bioassays, and Field Trials

Synthesis and Evaluation of Copper Oleate Nanoparticles Against Citrus Anthracnose Caused by Colletotrichum gloeosporioides: In Situ Experiments, In Vitro Bioassays, and Field Trials

Nanostructured binary transition-metal-sulfides and nanocomposites as high-performance electrodes for hybrid supercapacitors

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