Ni single atoms supported on hierarchically porous carbonized wood with highly active Ni–N₄sites as a self-supported electrode for superior CO₂electroreduction

Abstract

Powdery N-doped carbon-supported single-atom catalysts (SACs) can be prepared at a large scale and are highly selective for coverting CO2 to CO, but their practical application is restricted by their...

Promoting CO2Dynamic Activation via Micro‐Engineering Technology for Enhancing Electrochemical CO2Reduction

“…I-Ni SA/NHCRs reveal the high TOF CO value from −0.6 V to −1.0 V versus RHE (e.g., ≈2.0 s −1 at −0.8 V versus RHE), which is better than the most reported Ni-based catalyst (Figure 3e and Table S7, Supporting Information). [15,[28][29][30][31][32][33][34][35][36][37][38][39][40] Meanwhile, the high FE CO of 94.91% and j CO of −15.35 mA cm −2 (−0.80 V versus RHE) of I-Ni SA/NHCRs is also superior to the most well-known Ni-based catalysts toward CO 2 RR (Figure 3f,g), demonstrating that I-Ni SA/NHCRs possess a significant advantage in electrocatalytic CO 2 -to-CO conversion. Besides, CO energy efficiency (EE CO , Figure 3h and Equation S6, Supporting Information) and CO evolution rate (Figure 3i) were calculated, which also shows the significant advantage in I-Ni SA/NHCRs.…”

Self-Supporting Bi–Sb Bimetallic Nanoleaf for Electrochemical Synthesis of Formate by Highly Selective CO2 Reduction

“…However, less attention on Sb-based materials has been paid to the CO 2 RR. This may be due to the fact that Sb suffers from poor activity and selectivity for the CO 2 RR because of the strong competition with the HER in the electrolysis process. , In addition, the self-supporting electrode can not only accelerate the electron transfer process but also fully expose the constructed active site of the catalyst. − Hence, the self-supporting bimetallic Bi–Sb/carbon paper (CP) electrode in the electrocatalytic CO 2 RR will be certainly an effective approach for developing high-quality electrode materials for the CO 2 RR by the electrodeposition technique.…”

Boosting CO2 electroreduction on a Zn electrode via concurrent surface reconstruction and interfacial surfactant modification

“…To rationalize the activity improvement of the OD-Zn electrodes, we compare the intrinsic activity of the pristine Zn foil with that of the OD-Zn electrodes by normalizing j CO to the electrochemical surface area (ECSA) (see the experimental details in the ESI†). 15,23 As shown in Fig. S3 and Table S1,† the ECSA of the OD-Zn electrodes is much higher than that of the pristine Zn foil, indicating the increased number of active sites, which is a result of the surface reconstruction induced by the in situ electrochemical reduction of grown ZnO nanostructures.…”