Oxygen Evolution Reaction Catalysts
Chapter 3: Understanding the Effects of Composition and Structure on the Oxygen Evolution Reaction (OER) Occurring on NiFeOx Catalysts
... number of electrochemically active centers per unit weight of catalyst should be related to the BET surface area (surface area per unit weight of catalyst). However, the underlying assumption for this relation has been ...
39
Liquid exfoliated Co(OH)2 nanosheets as low cost high performance catalysts for the oxygen evolution reaction
... In order to properly benchmark these optimisations and to put them into perspective, we have compared our results to the current state-of-the-art in OER catalysts. We have attempted to include a fair ...
27
Transition metal nitrogen carbon catalysts for oxygen reduction reaction in neutral electrolyte
... transfer process, as the peroxide intermediates are more readily re- duced to water. A further increase in loading led to a decrease in the ki- netic current density, which indicates that probably the reactants are not ...
5
Preparation and Characterization of Ruo2 Catalysts for Oxygen Evolution in a Solid Polymer Electrolyte
... Figure 9. Tafel plot for oxygen evolution reaction in a SPE electrolyser for the RuO 2 powder calcined at 300°C for 1 h and 3 h at 80°C. The cell equipped with RuO 2 calcined at 300°C for 3 h showed ...
13
Hierarchical Polyelemental Nanoparticles as Bifunctional Catalysts for Oxygen Evolution and Reduction Reactions
... tional catalysts due to their wide compositions and synergistic ...bifunctional catalysts for the oxygen evolution reaction (OER) and oxygen reduction reaction ...
10
NiCoP Nanoparticles as Efficient Electrocatalyst for Oxygen Evolution Reaction in an Alkaline Solution
... 4. CONCLUSIONS The NiCoP nanomaterial has been reported for water oxidation in alkaline solution. The NiCoP structure has been systematically investigated. The electrochemical results showed that the NiCoP nanomaterial ...
11
FeMoO4 Nanoprism Supported on Nickel Foam as Electrocatalyst for Oxygen Evolution Reaction
... In this work, nickel foam with a unique three-dimensional structure is used as the substrate to support FeMoO 4 nanoprism with rich defects and high intrinsic activity by a facile one-step hydrothermal method. Meanwhile, ...
10
Electrochemical Evaluation of a Ir-Ru Binary Oxide for Oxygen Evolution Reaction
... the oxygen evolution reaction. The catalysts were prepared by using a colloidal method in aqueous solution and a subsequent thermal ...
11
-MnO redox couple for oxygen evolution reaction in alkaline water splitting
... crystalline catalysts were finally synthesized via sintering at 500 ℃ for 4 h in an Ar gas atmosphere to prevent the Mn from being oxidized into trivalent or tetravalent ...
23
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 ...
12
An electrochemical impedance study of the oxygen evolution reaction at hydrous iron oxide in base
... hydroxide bond strength in 3d-metal oxyhydroxide surface clusters and their OER catalytic activity. In recent years, molecular catalysts for water oxidation have also received considerable research attention. 29 ...
14
Studies on the Effect of the Substrate on the Electrocatalytic Performance of Electrodeposited NiFe Hydroxides for Oxygen Evolution Reaction
... However, research into the effect of the underlying substrate on the performance of electrocatalysts has been rather limited. Previous studies have found that the catalyst substrate plays an important role in developing ...
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 ...
11
ZIF-9 with Enhanced Surpercapacitor and Electrocatalytic for Oxygen Evolution Reaction Performances in Alkaline Electrolyte
... Galvanostatic curve for ZIF-9 was measured for over 7200 s, only a slight increase of the potential (~11 mV) for ZIF-9 was observed. Low overpotential, high catalytic current and relatively small Tafel slope indicate ...
8
Microwave Assisted Synthesis of Chromium Substituted Nickel Ferrite Spinel for Oxygen Evolution Reaction
... oxide catalysts at low temperature method [20-23] or substitution of other metal ions in oxide matrix ...for oxygen evolution in alkaline solutions and observed that significant improvement in ...
6
Template free synthesis of mesoporous manganese oxides with catalytic activity in the oxygen evolution reaction
... b and g phases were 0.49, 0.60 and 0.74 V, respectively. 30 These results indicate that small changes in the synthetic method alter the resulting phase and the OER activity. Commercial MnO, Mn 3 O 4 , Mn 2 O 3 and MnO 2 ...
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 ...these catalysts is di fficult due to the ...
10
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
Recent developments of nano-structured materials as the catalysts for oxygen reduction reaction
... based catalysts have been considered as the most promising materials to replace conventional cata- lysts, recent findings showed possibility to practical com- mercial applications such as Fe–N/C, FePhen@MOF, and ...
15
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