General Comments on the Oxygen Evolution Reaction
efficient oxygen evolution reaction
... The morphology, microstructure, and chemical composition of bare CoNi foam (denoted as bare CNF), 3CT/CF-240C and 3CNT/CNF-240C electrodes were examined by field-emission sc[r] ...
17
Electrodeposition of Nanostructured ZnO Photoanodes for Their Application in the Oxygen Evolution Reaction
... 3.6. Photoelectrochemical evaluation Transient photocurrents were recorded at open circuit potential under simulated sunlight on/off cycles. The chemical stability of ZnO is a key factor for its application in high ...
17
Fabrication of MnOx/MWCNTs-GC Nanocatalyst for Oxygen Evolution Reaction
... * E-mail: [email protected]; [email protected] Received: 13 April 2018 / Accepted: 2 June 2018 / Published: 5 August 2018 Manganese oxide (MnOx) and multiwalled carbon nanotubes (MWCNTs) are intended to modify the ...
9
NiCoP Nanoparticles as Efficient Electrocatalyst for Oxygen Evolution Reaction in an Alkaline Solution
... O 2 could not easily block the interaction between catalyst and water, which was beneficial to the long- term operation of the catalyst. As the Ni foam surface covered with NiCoP-CNTs and the catalyst surface oxidation ...
11
The oxygen evolution reaction at Manganese Oxide films in base: Kinetics and Mechanism
... to oxygen evolution overpotential than the titanium ...substrate.The reaction orders of the Mn x O y on the nickel substrate at lower temperatures has exhibited lower tafel slopes and better ...
19
FeMoO4 Nanoprism Supported on Nickel Foam as Electrocatalyst for Oxygen Evolution Reaction
... HRTEM images of FeMoO 4 -1 in Figure 4a-b also present prism-like morphology consistent with SEM results. As shown in Figure 4c, the edge of the prism is covered with rough film, which belongs to FeMoO 4 . The loose ...
10
Electrochemical Evaluation of a Ir-Ru Binary Oxide for Oxygen Evolution Reaction
... * E-mail: [email protected] Received: 4 July 2012 / Accepted: 17 July 2012 / Published: 1 September 2012 Binary oxides of IrO x :RuO y were synthesized and characterized as electrocatalysts for the oxygen ...
11
-MnO redox couple for oxygen evolution reaction in alkaline water splitting
... 3 increase in the amount of surface active sites, electron-rich interface formation, effective charge separation, and suppression of exciton recombination; consequently, they have led to performance improvements in ...
23
Effect of Fluoride Ions on Oxygen Reduction and Evolution Reaction at α-MnO2 Cathode
... CONCLUSION Oxygen electrodes of aqueous Li- O 2 batteries should have superior catalytic activities for ORR during discharging and OER during the charging ...
13
Controlled Synthesis of Co3O4 Electrocatalysts with Different Morphologies and Their Application for Oxygen Evolution Reaction
... * E-mail: [email protected], [email protected] Received: 21 December 2017 / Accepted: 11 February 2018 / Published: 6 March 2018 The effect of the Co 3 O 4 catalysts with different morphologies on the oxygen ...
12
An electrochemical impedance study of the oxygen evolution reaction at hydrous iron oxide in base
... the oxygen evolu- tion reaction ...active oxygen evolution at the lowest possible overpotential, thereby optimising the overall electro- lysis ...
14
Influence of chiral compounds on the oxygen evolution reaction (OER) in the water splitting process
... L-(+)-tartaric acid concentration: (blue dash) 0 mM, (green) 0.5 mM, (red) 5 mM 3.3.2 Stepped sweeps Ni-on-magnet Stepped potential sweeps experiments were recorded also exploiting a ferromagnetic electrode in tight ...
17
Studies on the Effect of the Substrate on the Electrocatalytic Performance of Electrodeposited NiFe Hydroxides for Oxygen Evolution Reaction
... reduction reaction of NO 3− anions at the electrode surface during the electrodeposition process generates local hydroxide ions that react with Ni 2+ and Fe 3+ ions to form NiFe hydroxide films on the substrate ...
12
Binary Cobalt and Magnesium Hydroxide Catalyst for Oxygen Evolution Reaction in Alkaline Water Electrolysis
... The oxygen evolution reaction (OER) at the anode: 4OH - → O 2 + 2H 2 O + 4e - (2) The development of more stable catalysts with high catalytic activity and low overpotential as anode catalysts for ...
11
ZIF-9 with Enhanced Surpercapacitor and Electrocatalytic for Oxygen Evolution Reaction Performances in Alkaline Electrolyte
... * E-mail: [email protected], [email protected] Received: 12 May 2016 / Accepted: 7 July 2016 / Published: 7 August 2016 Zeolitic imidazolate frameworks (ZIFs) are a new class of metal-organic materials built by ...
8
A comparative study of the oxygen evolution reaction on oxidized nickel, cobalt and iron electrodes in base
... the reaction order from this data, namely, the fact that the Tafel slope increases from 38 mV dec 1 in ...tion, reaction order plots were constructed for several of the asso- ciated values of ...
13
Kinetic and mechanistic aspects of the oxygen evolution reaction at hydrous iron oxide films in base
... corresponding reaction orders of unity and 2, respectively, if the formation of the metal peroxide S O O H or the metal peroxo S O O species are assumed to be rate ...fractional reaction orders can be ...
14
Microwave Assisted Synthesis of Chromium Substituted Nickel Ferrite Spinel for Oxygen Evolution Reaction
... electrocatalytic oxygen evolution reaction (OER) of as-synthesized materials was studied by linear sweep voltammetry in alkaline ...of reaction were also in close agreements with literature ...
6
Template free synthesis of mesoporous manganese oxides with catalytic activity in the oxygen evolution reaction
... treatment in air, Fig. 2 and Table 1. Fig. 2a, shows that all samples display characteristic type-IV adsorption isotherms. 55 The specic surface areas calculated using the BET method are reported in Table 1; results ...
9
Reversible Structural Evolution of NiCoO x H y during the Oxygen Evolution Reaction and Identification of the Catalytically Active Phase
... oxide catalysts such as Co 3 O 4 , 30 − 32 CoOOH, 33 , 34 and NiCo hydroxides 35 have demonstrated excellent OER activities and attracted considerable research interest. However, under- standing the structure −activity ...
10