In situ electro-activation of commercial MnCO3 with porous structure obtained by acid etching for aqueous zinc ion batteries

Defect engineering and atomic doping of porous Co-Ni2P nanosheet arrays for boosting electrocatalytic oxygen evolution

“…It can be seen in Fig. 1a that the five diffraction peaks at 40.7°, 44.6°, 47.3°, 54.2°, and 55.0° can be attributed to Ni 2 P (74-1385), 34 which correspond to the (111), (201), (210), (300) and (211) crystal planes respectively. In addition, it can be found that the diffraction peaks of Co-Ni 2 P shift 0.11°, 0.20°, and 0.14° to the right at 40.7°, 44.6°, and 47.3° respectively ( Fig.…”

“…33 In addition, Chen et al synthesized a kind of porous commercial MnCO 3 using hydrochloric acid corrosion, proving that acid etching nanomaterials can also form porous structures, thus increasing the specic surface area of the material and accelerating charge transfer, which is of great signicance for improving the performance of the catalyst. 34 Based on the above research inspiration, in this paper, we have synthesized a porous Co-Ni 2 P/NF-corr nanosheet catalyst for electrochemical OER processes. The Co-Ni(OH)F nanosheets distributed vertically on NF provide a large enough surface area for H 2 SO 4 corrosion.…”

“… 33 In addition, Chen et al synthesized a kind of porous commercial MnCO 3 using hydrochloric acid corrosion, proving that acid etching nanomaterials can also form porous structures, thus increasing the specific surface area of the material and accelerating charge transfer, which is of great significance for improving the performance of the catalyst. 34 …”

Crystalline MnCO3@Amorphous MnOx Composite as Cathode Material for High-Performance Aqueous Zinc-Ion Batteries

“…Moreover, amorphous MnO x itself is anisotropic, which can alleviate the volumetric strains during cycling, thus slowing down the structural collapse of the MnO x electrode. , In addition, it is worth noting that MnCO 3 , which is composed of MnO 6 octahedrons and carbonate and has a crystal structure very similar to that of MnO 2 , has recently received wide attention as a cathode material for AZIBs . The presence of low-valent Mn in MnCO 3 and the unique channel structure for easy Zn 2+ diffusion make it a potential cathode material for AZIBs However, the conductivity of MnCO 3 is very low, and to enhance its conductivity and thereby improve its electrochemical performance, modification strategies such as the use of conductive additives, defect engineering, and structure optimization design are introduced. − …”