RETRACTED: Super-hydrophilic MgO/NiCo2S4 heterostructure for high-efficient oxygen evolution reaction in neutral electrolytes

Oriented CuWO4 Films for Improved Photoelectrochemical Water Splitting

“…These indicate a higher activity and better carrier transport ability for the (100) facet compared to (111) and (−102) facets, which is consistent with the results of EIS (Figure a), IMPS (Figure S4a), and OCP (Figure a). In Figure g, the absorption energy of oxygen evolution intermediates (OH*, O*, and OOH*) was calculated to determine the potential-determining step. − For the (100) facet, the step of forming O* is the potential-determining step, and the energy barrier is 1.82 eV. For the (111) facet, the potential-determining step of the reaction is the conversion of H 2 O to OH*, and the energy barrier is 2.09 eV, For the (−102) slab, an energy barrier of 2.64 eV can be seen at the step of conversion O* to OOH*.…”

Interfacial engineering of a tri-phase CoFe/CoFeOx/Co–Fe3O4electrocatalyst for promoting the oxygen evolution reaction

“…4 indicate that the samples possess mesoporous structures. It is well acknowledged that the hydrophilic nature of the catalyst surface leads to a positive impact on the electrocatalytic performance, 39,40 hence we carried out the contact angle test to verify the hydrophilia variation after the combination of cobalt and iron species (as indicated in Fig. 5).…”

Recent advances in interface engineering strategy for highly‐efficient electrocatalytic water splitting

“…Considering that the Mg 2+ ions with hydration effect can promote the adsorption of water on the catalyst, Wang et al constructed the MgO/NiCo 2 S 4 heterostructure in situ on carbon cloth. 174 Compared with the pure NiCo 2 S 4 catalyst, the contact angle of this heterostructured catalyst with water was reduced to 0 , indicating that the composite of MgO and NiCo 2 S 4 promoted the super hydrophilic state of the catalyst, which in turn improved the neutral OER activity. Wang's team exploited the strong hydrophilicity and reducibility of MXene to spontaneously prepare MXene@Pt catalysts with excellent water-binding energy.…”

“… 173 This facilitated the mass transfer and rapid release of H 2 , endowing the a‐Rh(OH) 3 /NiTe material with efficient HER catalytic activity in acidic, neutral, and alkaline electrolytes. Considering that the Mg 2+ ions with hydration effect can promote the adsorption of water on the catalyst, Wang et al constructed the MgO/NiCo 2 S 4 heterostructure in situ on carbon cloth 174 . Compared with the pure NiCo 2 S 4 catalyst, the contact angle of this heterostructured catalyst with water was reduced to 0°, indicating that the composite of MgO and NiCo 2 S 4 promoted the super hydrophilic state of the catalyst, which in turn improved the neutral OER activity.…”