Fabrication of hierarchical hollow Mn doped Ni(OH)2 nanostructures with enhanced catalytic activity towards electrochemical oxidation of methanol

Dong, Bing; Li, Wei; Huang, Xiaoxiao; Ali, Zeeshan; Zhang, Teng; Yang, Ziyu; Hou, Yanglong

doi:10.1016/j.nanoen.2018.10.050

Cited by 106 publications

(50 citation statements)

References 37 publications

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“…The lowest Tafel slope 258 mV dec À 1 was obtained at 5 mM (Table 2 and Figure S4), which also ensured that the Pt-5 mM possesses fast electron transfer capability due to quick transport of active species of MOR on the catalyst surfaces. [58] However, this Tafel slope observation also support the other experimental results.…”

Section: Tafel Plot and Durability Analysissupporting

confidence: 87%

“…The fast electron transfer kinetics of ncs‐Pts and Pt/C were also analyzed a through well‐known Tafel plot (Figure ) at lower potentials obtained from the cyclic voltammograms of Figure A. The lowest Tafel slope 258 mV dec −1 was obtained at 5 mM (Table and Figure S4), which also ensured that the Pt‐5 mM possesses fast electron transfer capability due to quick transport of active species of MOR on the catalyst surfaces . However, this Tafel slope observation also support the other experimental results.…”

Section: Resultssupporting

confidence: 71%

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Carbon‐Free Nanocoral‐Structured Platinum Electrocatalyst for Enhanced Methanol Oxidation Reaction Activity with Superior Poison Tolerance

et al. 2020

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Poisoning from carbonaceous species and poor mass activity of catalysts are two major challenges that should be overcome for the commercial applications of direct methanol fuel cells (DMFC). In this work, superior poison-tolerant, carbon-free nanocoral-structured platinum (ncs-Pt) catalysts are successfully synthesized by using a micelle-directed method. The morphology and pore size of ncs-Pt are tailored by varying the compositional ratio of Pt in the precursor solutions and by changing the molecular ratios of different surfactant blocks. The physical properties of the ncs-Pt catalyst are observed through field emission scanning electron microscopy, X-ray photoelectron spectroscopy, X-ray diffraction, and inductively coupled plasma mass spectrometry, whereas the electrochemical characteristics are analyzed through cyclic voltammetry and chronoamperometry. The developed ncs-Pt (5 mM) catalyst exhibits a high density of porous structures, high index facets, lower dband center, and a highly negative onset potential (À 0.59 V). Therefore, the developed ncs-Pt catalyst offers enhanced mass activity 6.56 mA/μg and superior poison tolerance 5.62 for the methanol oxidation reaction.[a] S.

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Section: Tafel Plot and Durability Analysissupporting

confidence: 87%

Section: Resultssupporting

confidence: 71%

Carbon‐Free Nanocoral‐Structured Platinum Electrocatalyst for Enhanced Methanol Oxidation Reaction Activity with Superior Poison Tolerance

et al. 2020

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“…However, it still suffers from the low conductivity, which is harmful to the rate performance [28]. Furthermore, the large volume expansion during charging/discharging process leads to cycling issues [29][30][31]. One promising strategy to improve its supercapacitor performance is compositing Ni(OH) 2 with other materials.…”

Section: Introductionmentioning

confidence: 99%

NiSe2/Ni(OH)2 Heterojunction Composite through Epitaxial-like Strategy as High-Rate Battery-Type Electrode Material

Mei

Huang

et al. 2020

Nano-Micro Lett.

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“…Therefore, it is necessary to develop an alternative catalyst with low cost, abundance, great efficiency and good stability for MOR. Thus, study of non‐Pt based electrocatalysts on high conductivity and tremendous catalytic activity is the way to reduce the catalyst cost without compromising the performance …”

Section: Introductionmentioning

confidence: 99%

Reduced Graphene Oxide Supported NiCo₂O₄ Nano‐Rods: An Efficient, Stable and Cost‐Effective Electrocatalyst for Methanol Oxidation Reaction

Narayanan

Neppolian

2019

ChemCatChem

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The development of inexpensive, highly active and non-noble catalysts for the methanol oxidation reaction is extremely desirable for the practical use of direct-methanol fuel cells. Here, we have developed a template-free hydrothermal synthesis followed by calcination to produce highly active hybrid material of reduced graphene oxide (rGO) supported NiCo 2 O 4 (NiCo 2 O 4 /rGO) nano-rods as a non-expensive electro-catalyst for methanol oxidation. The electrochemical performance of the prepared NiCo 2 O 4 /rGO spinel catalyst was investigated by cyclic voltammetry (CV), chronoamperometry (CA) and electrochemical impedance spectroscopy (EIS) techniques. Impressively, the NiCo 2 O 4 /rGO showed greater electrocatalytic activity (78 mA/ cm 2 ) and stability during methanol oxidation in comparison to that of the commercial Pt/C catalyst, which was 3.11 folds higher than the commercial Pt/C (25.08 mA/cm 2 ). The NiCo 2 O 4 / rGO electrode also maintained its remarkable catalytic stability even after consecutive 500 cycles, which was~50 times higher than that of the commercial Pt/C. The overall electroactivity of NiCo 2 O 4 /rGO was remarkably enhanced by the synergistic effect between NiCo 2 O 4 and rGO. This may be due to the formation of mixed-valence cations of Ni 2 + and Co 3 + from the octahedral sites and high electron-transfer conductivity of rGO as well.[a] N.

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Fabrication of hierarchical hollow Mn doped Ni(OH)2 nanostructures with enhanced catalytic activity towards electrochemical oxidation of methanol

Cited by 106 publications

References 37 publications

Carbon‐Free Nanocoral‐Structured Platinum Electrocatalyst for Enhanced Methanol Oxidation Reaction Activity with Superior Poison Tolerance

Carbon‐Free Nanocoral‐Structured Platinum Electrocatalyst for Enhanced Methanol Oxidation Reaction Activity with Superior Poison Tolerance

NiSe2/Ni(OH)2 Heterojunction Composite through Epitaxial-like Strategy as High-Rate Battery-Type Electrode Material

Reduced Graphene Oxide Supported NiCo₂O₄ Nano‐Rods: An Efficient, Stable and Cost‐Effective Electrocatalyst for Methanol Oxidation Reaction

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Fabrication of hierarchical hollow Mn doped Ni(OH)2 nanostructures with enhanced catalytic activity towards electrochemical oxidation of methanol

Cited by 106 publications

References 37 publications

Carbon‐Free Nanocoral‐Structured Platinum Electrocatalyst for Enhanced Methanol Oxidation Reaction Activity with Superior Poison Tolerance

Carbon‐Free Nanocoral‐Structured Platinum Electrocatalyst for Enhanced Methanol Oxidation Reaction Activity with Superior Poison Tolerance

NiSe2/Ni(OH)2 Heterojunction Composite through Epitaxial-like Strategy as High-Rate Battery-Type Electrode Material

Reduced Graphene Oxide Supported NiCo2O4 Nano‐Rods: An Efficient, Stable and Cost‐Effective Electrocatalyst for Methanol Oxidation Reaction

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Reduced Graphene Oxide Supported NiCo₂O₄ Nano‐Rods: An Efficient, Stable and Cost‐Effective Electrocatalyst for Methanol Oxidation Reaction