Metal–organic framework derived hollow porous CuO–CuCo₂O₄ dodecahedrons as a cathode catalyst for Li–O₂ batteries

Abstract

Metal–organic framework derived porous CuO–CuCo2O4 dodecahedrons as a cathode catalyst for Li–O2 batteries with significantly enhanced rate and cyclic performance.

Highly Sensitive and Selective Nonenzymatic Sensing of Glyphosate Using FTO-Modified MOF-Derived CuCo2O4 Nanostructures Intercalated in Protonated-g-C3N4 and 3D-Graphene Oxide Sheets

“…A weak peak at 13.2° refers to the (100) plane of H-gC 3 N 4 , indicating the presence of a tri-s-triazine moiety. The 2Θ peaks at 18.9, 31.0, 36.5, 44.5, 54.6, 59.1, 64.8, and 76.9° correspond to (111), (220), (311), (222), (400), (422), (511), and (440) planes, confirming the formation of the CuCo 2 O 4 spinel with the #JCPDS file (78–2175) . Moreover, to confirm the single phase of the CuCo 2 O 4 spinel, a comparative plot analysis of XRD with the corresponding #JCPDS file is also attached, which is matched by X’pert HighScore software, confirming the similar index plane of the synthesized single phase of the CuCo 2 O 4 spinel (Figure S5).…”

“…The 2Θ peaks at 18.9, 31.0, 36.5, 44.5, 54.6, 59.1, 64.8, and 76.9°correspond to (111), ( 220), (311), (222), (400), (422), (511), and (440) planes, confirming the formation of the CuCo 2 O 4 spinel with the #JCPDS file (78− 2175). 54 Moreover, to confirm the single phase of the CuCo 2 O 4 spinel, a comparative plot analysis of XRD with the corresponding #JCPDS file is also attached, which is matched by X'pert HighScore software, confirming the similar index plane of the synthesized single phase of the CuCo 2 O 4 spinel (Figure S5). Rietveld refinements were performed using the FullProof program to refine the cell parameters and where D denotes the crystallite size, k is the Scherrer constant (0.89), λ stands for the X-ray wavelength (0.15418), and β is the full width at half-maximum.…”

Nanostructured Conductive Metal Organic Frameworks for Sustainable Low Charge Overpotentials in Li–Air Batteries

“…The use of a 2D copper-based conductive metal organic framework (c-MOF), copper tetrahydroxyquinone (Cu-THQ) in a Li-O 2 battery leads to a much better performance in terms of sustained low charge potentials than those batteries that have been reported based on non-conducting MOFs and MOF-derived cathodes. [22,23,32,[24][25][26][27][28][29][30][31] The high active surface area and enhanced electronic conductivity of the Cu-THQ cathode paired with an electrolyte combination of InBr 3 , LiNO 3 , and TEGDME is found to enable a long cycle life (ranging from 100 to 300 cycles) with a stable and low charge overpotential (terminal charge potential < 3.7 V) under high current density values of 1 and 2 A g −1 with capacities of 1000 and 2000 mAh g −1 . These results suggest the conductive framework helps to significantly improve the performance of MOF-based cathodes in Li-O 2 batteries.…”

“…Among beyond Li-ion batteries, lithium-oxygen (Li-O 2 ) battery is the most Therefore, various design strategies have been employed to synthesize conductive MOFs (c-MOFs) with enhanced electron transport properties and structural stability crucial to advanced electrochemical systems. [17,[19][20][21] While MOFs and MOF-based electrodes have been investigated in a number of Li-O 2 batteries, [22][23][24][25][26][27][28][29][30][31][32] the performance of c-MOFs has remained unexplored. Herein, we report the first demonstration of a cathode based on a c-MOF, namely copper tetrahydroxyquinone (Cu-THQ), in a Li-O 2 battery system that operates without any conductive additive and with dry air.…”

Synergy effect of CuO on CuCo2O4 for methane catalytic combustion

“…18–21 CuCo 2 O 4 spinel oxide can be synthesized by various methods, such as the sol–gel, 22 hydrothermal, 23 and template methods. 24 However, in the above literature reports, there was a CuO phase that coexisted with CuCo 2 O 4 in the synthesized samples, so it was difficult to synthesize pure CuCo 2 O 4 oxides. Here, a series of (CuO) x –CuCo 2 O 4 ( x = 0, 0.1, 0.2) composite oxides were synthesized by the solvothermal method.…”