Splendid Intrinsic Activity of NiC/Mo2C@C Nanocubes for Efficient Water Oxidation DOI
Kuldeep Kumar,

Dhanasingh Thiruvengadam,

Kuppusamy Rajan

et al.

ACS Applied Electronic Materials, Journal Year: 2024, Volume and Issue: 7(1), P. 450 - 462

Published: Dec. 18, 2024

Developing inexpensive, efficient electrocatalysts for hydrogen generation gained much attention water splitting. Herein, the interface engineering concept was proposed to fabricate a corn husk biomass-derived NiC/Mo2C@C-450 heterostructure consisting of NiC and Mo2C embedded in graphitic carbon synthesized by mechanochemical calcination/magnesiothermic reduction strategy. The NiC/Mo2C heterojunction encapsulated with porous having more interfacial area high conductivity exposed catalytic sites leads moderate adsorption energy, improved desorption kinetics, assisted rapid electron transfer. optimum catalyst affords low overpotential (GC/NF) 291:258 mV small Tafel slope 117:103 dec–1 attains stability over 8 h. activation energy calculated electrolysis using as 44.00 kJ/mol. integrated area/number active (4.97 × 10–5 AV/9.98 10–3) confirmed MOOH* formation. superaerophobicity substantiated fast gas bubble evolution from surface. Using NiC/Mo2C@C-450, we have produced H2 efficiently lower power consumption 761.50 LH2kWh–1. two-electrode configuration NiC/Mo2C@C-450/NF//Pt/C/NF required cell voltage 1.60 V great an alkaline solution. intriguing synthetic strategy will provide potential avenue synthesizing other metal carbide catalysts extensive electrochemical applications.

Language: Английский

Interfacial engineering of heterostructured CoP/FeP nanoflakes as bifunctional electrocatalyts toward alkaline water splitting DOI
Yu Zhang, Zhiyong Li, Siqi He

et al.

Journal of Colloid and Interface Science, Journal Year: 2024, Volume and Issue: 679, P. 20 - 29

Published: Oct. 18, 2024

Language: Английский

Citations

44
Ni–O–C/LNSP Core–Shell Heterostructure Mimicking Noble Metal-like Activity and Nonenzymatic Electrochemical Lactate Regulation in Human Sweat DOI
Kuldeep Kumar,

Dhanasingh Thiruvengadam,

Arokiadoss Davidrichetson

et al.

Langmuir, Journal Year: 2025, Volume and Issue: unknown

Published: March 5, 2025

Herein, a core/shell LNSP (lamellar nanosheet–nanoplate) of nickel oxy carbide (Ni–O–C/LNSP) has been synthesized by solvent-devoid combustion process, which exhibits exceptional oxygen evolution efficiency (OER) performance with an overpotential 311 mV, Tafel slope 116 mV dec–1, and stability over 8 h 2.8% potential loss owing to more exposed active sites high conductivity the interface effect. The activation energy 28 kJ/mol was calculated for electrolysis using Ni–O–C/LNSP. integrated area 3.70 × 10–5 AV established MOOH* formation 4.619 10–16. ultrastability Ni–O–C/LNSP commercial application shown durability at 10/100 mA cm–2 OER (GC─8 h, 2.8%; NF─100 3.4/4.9%), UOR (60 3.4%), SWO 4.1%), MSWO 5.6%), overall water splitting (100 3.9%). effect pH addition tetramethylammonium cations (TMA+) reveals follows lattice mechanism. solar-driven 1.58 V shows effectiveness STH conversion. multiple applications projected as auspicious catalyst applications. Using Ni–O–C/LNSP, we have generated H2 effectively lower power consumption 771.08 LH2 kW h–1 than bare NiO (801 h–1). as-prepared used nonenzymatic lactate detection showed sensitivity 71.05 μA mM–1 1.54 [lactate] difference in human sweat corroborated under both anaerobic aerobic exercise conditions

Language: Английский

Citations

0
Influence of Interfacial Engineering of NiC/Co2C Enables Unlocking Efficiency of Water Oxidation DOI

Kuppusamy Rajan,

Dhanasingh Thiruvengadam,

M. Rajkumar

et al.

Energy & Fuels, Journal Year: 2025, Volume and Issue: unknown

Published: May 7, 2025

Language: Английский

Citations

0
Splendid Intrinsic Activity of NiC/Mo2C@C Nanocubes for Efficient Water Oxidation DOI
Kuldeep Kumar,

Dhanasingh Thiruvengadam,

Kuppusamy Rajan

et al.

ACS Applied Electronic Materials, Journal Year: 2024, Volume and Issue: 7(1), P. 450 - 462

Published: Dec. 18, 2024

Developing inexpensive, efficient electrocatalysts for hydrogen generation gained much attention water splitting. Herein, the interface engineering concept was proposed to fabricate a corn husk biomass-derived NiC/Mo2C@C-450 heterostructure consisting of NiC and Mo2C embedded in graphitic carbon synthesized by mechanochemical calcination/magnesiothermic reduction strategy. The NiC/Mo2C heterojunction encapsulated with porous having more interfacial area high conductivity exposed catalytic sites leads moderate adsorption energy, improved desorption kinetics, assisted rapid electron transfer. optimum catalyst affords low overpotential (GC/NF) 291:258 mV small Tafel slope 117:103 dec–1 attains stability over 8 h. activation energy calculated electrolysis using as 44.00 kJ/mol. integrated area/number active (4.97 × 10–5 AV/9.98 10–3) confirmed MOOH* formation. superaerophobicity substantiated fast gas bubble evolution from surface. Using NiC/Mo2C@C-450, we have produced H2 efficiently lower power consumption 761.50 LH2kWh–1. two-electrode configuration NiC/Mo2C@C-450/NF//Pt/C/NF required cell voltage 1.60 V great an alkaline solution. intriguing synthetic strategy will provide potential avenue synthesizing other metal carbide catalysts extensive electrochemical applications.

Language: Английский

Citations

0