Ni-nanoclusters hybridized 1T–Mn–VTe2 mesoporous nanosheets for ultra-low potential water splitting

Pan, Uday Narayan; Paudel, Dasu Ram; Das, Amit Kumar; Singh, Thangjam Ibomcha; Kim, Nam Hoon; Lee, Joong Hee

doi:10.1016/j.apcatb.2021.120780

Cited by 42 publications

(40 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The three doublet peaks at ((641.3 and 652.6), (643.1 and 654.0), and (646.0 and 655.4)) eV are indexed to 2p 3/2 and 2p 1/2 of the +2, +3, and +4 states of Mn, respectively. 29 Fig. 2F shows that the high-resolution P 2p spectrum displays peaks located at (129.4 and 130.2) eV that correspond to the 2p 3/2 and 2p 1/2 of phosphide, respectively.…”

Section: Characterization and Analysis Of Materialsmentioning

confidence: 99%

“…Then, the polarization curves were recorded at a lower scan rate of 2 mV s À1 to suppress the redox peak of Ni foam. The measured potentials were converted against RHE according to the Nernst equation 29,30 All the linear sweep voltammetry (LSV) curves were iR-corrected using the equation E corr ¼ E RHE À iR s , 29,31,32 where R s and E corr are the solution resistance and iR-corrected potential, respectively. The Tafel slopes were calculated from the corresponding polarization curves following the equation h ¼ b log j + a, 29 where h, j, and b are the overpotential, current density, and Tafel slope, respectively.…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

“…The measured potentials were converted against RHE according to the Nernst equation 29,30 All the linear sweep voltammetry (LSV) curves were iR-corrected using the equation E corr ¼ E RHE À iR s , 29,31,32 where R s and E corr are the solution resistance and iR-corrected potential, respectively. The Tafel slopes were calculated from the corresponding polarization curves following the equation h ¼ b log j + a, 29 where h, j, and b are the overpotential, current density, and Tafel slope, respectively. Similarly, the electrochemically active surface area (ECSA) of the electrocatalysts, a basic measure of catalytic activity, was estimated using the equation ECSA ¼ C dl /C s , 31 where C dl and C s are the electrochemical double layer capacitance and specic capacitance of a at smooth surface, respectively.…”

Section: Electrochemical Measurementsmentioning

confidence: 99%

“…Similarly, the deconvoluted peaks at (851.3 and 869.1) eV are attributed to the 2p 3/2 and 2p 1/2 of the Ni 2+ state, while their corresponding satellite-1 and satellite-2 peaks at binding energies of (862.5 and 875.4) eV, respectively, are also observed. 29 Fig. 2D shows that the high-resolution XPS (HR-XPS) spectrum of Fe 2p has four deconvoluted peaks: two for each Fe 2+ and Fe 3+ ion.…”

Section: Characterization and Analysis Of Materialsmentioning

confidence: 99%

“…Based on that the Volmer-Heyrovsky HER mechanism over Ni-Fe-Mn-P/NC@NF and for other respective materials has been conrmed by specifying the Tafel slope values as shown in Table S2, ESI. † 29,46,58 H 2 O + e À À OH À / H ads (Volmer step)…”

Section: Hydrogen Evolution Reaction (Her) Performancementioning

confidence: 99%

See 4 more Smart Citations

A hybrid trimetallic–organic framework-derived N, C co-doped Ni–Fe–Mn–P ultrathin nanosheet electrocatalyst for proficient overall water-splitting

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

Section: Characterization and Analysis Of Materialsmentioning

confidence: 99%

Section: Electrochemical Measurementsmentioning

confidence: 99%

Section: Electrochemical Measurementsmentioning

confidence: 99%

Section: Characterization and Analysis Of Materialsmentioning

confidence: 99%

Section: Hydrogen Evolution Reaction (Her) Performancementioning

confidence: 99%

See 3 more Smart Citations

A hybrid trimetallic–organic framework-derived N, C co-doped Ni–Fe–Mn–P ultrathin nanosheet electrocatalyst for proficient overall water-splitting

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

High‐Alkaline Water‐Splitting Activity of Mesoporous 3D Heterostructures: An Amorphous‐Shell@Crystalline‐Core Nano‐Assembly of Co‐Ni‐Phosphate Ultrathin‐Nanosheets and V‐ Doped Cobalt‐Nitride Nanowires

et al. 2022

Self Cite

View full text Add to dashboard Cite

Introducing amorphous and ultrathin nanosheets of transition bimetal phosphate arrays that are highly active in the oxygen evolution reaction (OER) as shells over an electronically modulated crystalline core with low hydrogen absorption energy for an excellent hydrogen evolution reaction (HER) can boost the sluggish kinetics of the OER and HER in alkaline electrolytes. Therefore, in this study, ultrathin and amorphous cobalt‐nickel‐phosphate (CoNiPO x ) nanosheet arrays are deposited over vanadium (V)‐doped cobalt‐nitride (V 3% ‐Co 4 N) crystalline core nanowires to obtain amorphous‐shell@crystalline‐core mesoporous 3D‐heterostructures (CoNiPO x @V‐Co 4 N/NF) as bifunctional electrocatalysts. The optimized electrocatalyst shows extremely low HER and OER overpotentials of 53 and 270 mV at 10 mA cm −2 , respectively. The CoNiPO x @V 3% ‐Co 4 N/NF (+/−) electrolyzer utilizing the electrocatalyst as both anode and cathode demonstrates remarkable overall water‐splitting activity, requiring a cell potential of only 1.52 V at 10 mA cm −2 , 30 mV lower than that of the RuO 2 /NF (+)/20%‐Pt/C/NF (−) electrolyzer. Such impressive bifunctional activities can be attributed to abundant active sites, adjusted electronic structure, lower charge‐transfer resistance, enhanced electrochemically active surface area (ECSA), and surface‐ and volume‐confined electrocatalysis resulting from the synergistic effects of the crystalline V 3% ‐Co 4 N core and amorphous CoNiPO x shells boosting water splitting in alkaline media.

show abstract

Elucidating the Energy Storage Performance of 2D Metallic Vanadium Ditelluride/Carbon Nanotube for Next‐Generation Asymmetric Supercapacitors Using Emerging MoSSe/Carbon Nanotube

Koottumvathukkal Anil,

Radhakrishnan,

Kuniyil

et al. 2024

Adv Energy and Sustain Res

View full text Add to dashboard Cite

Recently, vanadium ditelluride (VTe2) a member of the transition metal ditellurdies family has emerged as a functional material for energy storage applications owing to its exotic intrinsic properties. Similar to most of the nanostructured materials, a hybrid structure of VTe2 is expected to provide enhanced energy storage capability. Herein, two hybrid structures of VTe2 are engineered using well‐explored nanocarbons such as RGO and carbon nanotube (CNT) to create a compelling supercapacitor electrode material. Both the hybrid structures show improved electrochemical activity, but VTe2/CNT fared better in the charge storage efficiency. The enhanced active sites, short ionic/electronic pathways provided by the CNT network, and the large electric double‐layer contribution have synergized for the inflated capacitance of VTe2/CNT. Further, a high‐performance asymmetric supercapacitor (ASC) of VTe2/CNT//MoSSe/CNT is constructed in a typical Swagelok cell, and the ASC delivered an energy density output of 36.28 Wh kg−1 at a power density of 463.16 W kg−1 with a remarkable 80.26% capacitance retention. The results of this work suggest that VTe2/CNT is a promising contender in the pantheon of functional materials for energy storage applications in the near future.

show abstract

Ni-nanoclusters hybridized 1T–Mn–VTe2 mesoporous nanosheets for ultra-low potential water splitting

Cited by 42 publications

References 58 publications

A hybrid trimetallic–organic framework-derived N, C co-doped Ni–Fe–Mn–P ultrathin nanosheet electrocatalyst for proficient overall water-splitting

A hybrid trimetallic–organic framework-derived N, C co-doped Ni–Fe–Mn–P ultrathin nanosheet electrocatalyst for proficient overall water-splitting

High‐Alkaline Water‐Splitting Activity of Mesoporous 3D Heterostructures: An Amorphous‐Shell@Crystalline‐Core Nano‐Assembly of Co‐Ni‐Phosphate Ultrathin‐Nanosheets and V‐ Doped Cobalt‐Nitride Nanowires

Elucidating the Energy Storage Performance of 2D Metallic Vanadium Ditelluride/Carbon Nanotube for Next‐Generation Asymmetric Supercapacitors Using Emerging MoSSe/Carbon Nanotube

Contact Info

Product

Resources

About