Transition metal – Graphene oxide nanohybrid materials as counter electrodes for high efficiency quantum dot solar cells

Modulation of Crystal Growth of an Energetic Metal–Organic Framework on the Surfaces of Graphene Derivatives for Improved Detonation Performance

“…FTIR spectra of Cu-AFTO, Cu-AFTO@GO, and Cu-AFTO@AGO are shown in Figure b; the absence of the −C=O groups at 1716 cm –1 and the −OH groups at 3400 cm –1 indicated the interaction between GO and Cu ions. In addition, the Cu–O stretching vibration at 597 cm –1 in the fingerprint area also proves the formation of coordination bonds . The presence of the absorption of −NH 2 groups in the FTIR spectra of Cu-AFTO@GO and Cu-AFTO@AGO indicates that the amino group of the AFTO ligand is not involved in the coordination reaction.…”

“…In addition, the Cu−O stretching vibration at 597 cm −1 in the fingerprint area also proves the formation of coordination bonds. 48 The presence of the absorption of −NH 2 groups in the FTIR spectra of Cu-AFTO@GO and Cu-AFTO@AGO indicates that the amino group of the AFTO ligand is not involved in the coordination reaction. The peak positions and peak position of Cu-AFTO@GO and Cu-AFTO@AGO are essentially identical to those of Cu-AFTO, which also provides solid support for the structures of Cu-AFTO@GO and Cu-AFTO@AGO.…”

High-efficiency counter electrodes for quantum dot–sensitized solar cells (QDSSCs): designing graphene-supported CuCo2O4 porous hollow microspheres with improved electron transport performance

“…14–17 Moreover, since cobalt-based materials have outstanding catalytic activity similar to precious metals and copper-based materials have distinguished electrical conductivity and low-cost, materials based on the combination of these two elements can complement each other and promote synergy, thereby enhancing the overall performance of the material. 18–21 Additionally, studies demonstrated that when the Co 2 + in Co 2 + (Co 2 ) 3+ O 4 is replaced with eco-friendly Cu 2+ , the rate capability and electrochemical properties of the material are greatly improved. 20,22 Based on the above advantages, CuCo 2 O 4 is extensively used in the fields of lithium ion batteries, 23 electrochemical sensors, 24 oxygen evolution, 19 supercapacitors, 13 perovskite solar cells 11 and so on.…”

Electrochemical Deposition of Copper on Epitaxial Graphene

“…The use of macroscale defect-free graphene sheets [7] allows for the avoidance of contributions from the reactive edge plane of high DOS. In the past decade, huge efforts have been made to conceptualize graphene-copper material hybridization for practical applications [8][9][10][11][12][13]. Particularly, it was discovered that the addition of graphene to the copper matrix can improve the mechanical and electrical properties of Cu, causing a significant increase in the electrical conductivity, Young's modulus, shear modulus, and Vickers hardness as well as a reduction in the thermal expansion coefficient [8][9][10][11].…”

“…The aforementioned advantages create excellent prerequisites for copper-graphene (Cu-Gr) composites to be used as reliable interconnection materials, electrical contact materials for ultrahigh-voltage circuit breakers and printed electronics. The enhanced conductivity of the Cu-Gr composite also determines its exploitation as a high-performance counter electrode in solar cells [12,13]. Furthermore, due to the larger heat transfer coefficient and higher corrosion resistance of Cu-Gr hybrids in 3.5% NaCl medium when compared to pure copper [14][15][16][17][18], these materials are very promising for engineering applications (for instance, anti-corrosion coatings) in sea water and for heat transfer applications, respectively.…”