Modulating the electronic structure of zinc single atom catalyst by P/N coordination and Co2P supports for efficient oxygen reduction in Zn-Air battery

Cu-based catalysts with the co-existence of single atoms and nanoparticles for basic electrocatalytic oxygen reduction reaction

“…6d, the n for Cu SA Cu NP /BiCN is close to 4 during the whole potential range, and the H 2 O 2 yield is lower than 15% in the range of selected potentials (from −0.3 to −0.8 V vs. RHE), which is similar to that of commercial Pt/C, further indicating a 4-electron transfer pathway. 41 In addition, the electrochemical active surface area (ECSA) is reflected by electrochemical double-layer capacitances ( C dl , Fig. 6e and Fig.…”

Coordination environment engineering of single-atom catalysts for the oxygen reduction reaction

“…Similarly, Najam et al synthesized a Zn SAC with Co 2 P nanoparticles and Zn single atoms (ZnCo-PNC). 168 They found that the introduction of Co 2 P nanoparticles could enhance the ORR performance of Zn single atoms. Remarkably, the E 1/2 values of ZnCo-PNC are up to 0.91 and 0.795 V in alkaline and acidic media, respectively.…”

Nanoneedles of Mixed Transition Metal Phosphides as Bifunctional Catalysts for Electrocatalytic Water Splitting in Alkaline Media

“…In this work, we changed their chemical environment by preparing a series of mixed compounds (Ni/Co and Ni/Fe) to understand their reciprocal interaction and synergic effects. The interaction of different metals in close contact is an approach used to overcome the OER slow kinetics for water electrolysis and metal–air batteries [ 18 , 19 , 20 , 21 , 22 ]; this approach is also the founding principle of the chemical activity of high-entropy materials [ 23 ]. The combination of Ni and Co has been deeply investigated for HER, where the synergy among the catalytic properties of Ni, which lowers the HER over-potential, and Co, which increases the hydrogen adsorption, is realized and allows to obtain a larger value of exchange current density [ 24 ].…”