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

Zhen, Shuying; Wu, Haitao; Wang, Yan; Li, Na; Chen, Haosen; Song, Wei‐Li; Wang, Zhenhua; Sun, Wang; Sun, Kening

doi:10.1039/c9ra02860a

Cited by 31 publications

(14 citation statements)

References 30 publications

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“…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).…”

Section: Resultsmentioning

confidence: 53%

“…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.…”

Section: Structure and Morphology Of The Cuco 2 Omentioning

confidence: 93%

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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

Maji

Sahoo

Rout

et al. 2023

Ind. Eng. Chem. Res.

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Owing to the toxicological effects of glyphosate (GLY) in the environment, the development of sensitive and selective sensors has become essential; however, limited studies have been done to detect it. In response to that, a novel MOF-derived copper-cobalt oxide decorated on a protonated-gC3N4 (H-gC3N4) and three-dimensional (3D)-graphene oxide nanocomposite (CuCo2O4/H-gC3N4/3D-rGO) has been synthesized by the solvothermal method using a zeolite imidazole framework (ZIF-67) template. The composite was then deposited on fluorine tin oxide (FTO) to fabricate a simple and cheap nonenzymatic electrochemical sensor for the sensing of glyphosate. The morphological evaluation by SEM and TEM techniques demonstrated that distorted dodecahedrons like CuCo2O4 nanostructures are distributed evenly on the surface of H-gC3N4 and intercalated between H-gC3N4 and 3D-rGO sheets. The distinct surface of the H-gC3N4 acts as a bridge between 3D-rGO layers and CuCo2O4 particles. In such structure, H-gC3N4 acts as the nucleation site and N-doped carbon is used to grow CuCo2O4 nanostructures. The CuCo2O4 peak shifting in the XRD profile and appropriate chemical states (Cu2+ in Oh and Co2+ in Td sites) as confirmed from XPS analysis suggested the successful formation of the nanocomposite. In addition, the nanocomposite showcased a high specific surface area of 138 m2 g–1, which help in the increase of electrode reaction sites and thus further improving the sensing performance. In CV analysis, the anodic peak current of the FTO/rGO-H-gC3N4-CuCo2O4 nanocomposite was found to be approximately 2.04, 1.85, 3.17, and 1.04 times higher than those of bare FTO, FTO/3D-rGO, FTO/H-gC3N4, and FTO/CuCo2O4, respectively, due to its highest specific electroactive area (0.17 cm2) calculated using the Randles–Sevcik analysis. After performing different optimization studies, it was found that our sensor showed better sensing performance in pH 5 at 50 mV s–1 after 150 s of accumulation time at room temperature. From the SWV analysis, a lower limit of detection of 0.63 × 10–12 M (sensitivity = 0.016 μA mM–1) with a wide detection window of 12 mM to 10 pM was achieved. The developed sensor also demonstrated high selectivity toward other pesticides like chlorpyrifos and malathion, as well as high stability for about 35 days. Lastly, the practical suitability of the proposed sensor was analyzed with real fruit samples such as sweet lime and pomegranate with a recovery rate of 98–101%.

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Section: Resultsmentioning

confidence: 53%

Section: Structure and Morphology Of The Cuco 2 Omentioning

confidence: 93%

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

Maji

Sahoo

Rout

et al. 2023

Ind. Eng. Chem. Res.

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“…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.…”

Section: Discussionmentioning

confidence: 99%

“…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.…”

Section: Introductionmentioning

confidence: 99%

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

Majidi

Ahmadiparidari

Shan

et al. 2021

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promising solution since it offers the highest theoretical energy density, that can substantially outperform Li-ion batteries. [1][2][3][4][5][6] Recently, Li-O 2 batteries have attracted a significant attention in various applications such as electrified transportation and smart grid systems; however, on the path of their practical use, there still remain many obstacles. The sluggish kinetics of the governing reactions during discharge and charge impose high overpotentials that result in low round trip efficiency. [7,8] Moreover, an inefficient decomposition of solid discharge products (Li 2 O 2 ) and its accumulation on the surface of the cathode lead to poor cycling (early failure) in these systems. [9,10] To address these issues, discovery of new cathode materials with outstanding functionalities is essential. In this context, metal organic frameworks (MOFs) are promising platforms owing to their high porosity, large surface area, highly ordered structure, and tunable chemical composition. These characteristics make MOFs an ideal candidate to be investigated as electrode materials in electrochemical energy applications [11][12][13] and especially rechargeable batteries. [14][15][16] However, traditional MOFs are still far from practical cathode materials due to their insulating nature stemming from the redox-inactive organic ligands and low-energy electron transfer pathways. [15,[17][18][19] Lithium-oxygen batteries are among the most attractive alternatives for future electrified transportation. However, their practical application is hindered by many obstacles. Due to the insulating nature of Li 2 O 2 product and the slow kinetics of reactions, attaining sustainable low charge overpotentials at high rates becomes a challenge resulting in the battery's early failure and low round trip efficiency. Herein, outstanding characteristics are discovered of a conductive metal organic framework (c-MOF) that promotes the growth of nanocrystalline Li 2 O 2 with amorphous regions. This provides a platform for the continuous growth of Li 2 O 2 units away from framework, enabling a fast discharge at high current rates. Moreover, the Li 2 O 2 structure works in synergy with the redox mediator (RM). The conductivity of the amorphous regions of the Li 2 O 2 allows the RM to act directly on the Li 2 O 2 surface instead of catalyst edges and then transport through the electrolyte to the Li 2 O 2 surface. This direct charge transfer enables a small charge potential of <3.7 V under high current densities (1-2 A g −1 ) sustained for a long cycle life (100-300 cycles) for large capacities (1000-2000 mAh g −1 ). These results open a new direction for utilizing c-MOFs towards advanced energy storage systems.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/smll.202102902.

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“…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.…”

Section: Introductionmentioning

confidence: 98%

Synergy effect of CuO on CuCo₂O₄ for methane catalytic combustion

Shao¹,

He²,

Su³

et al. 2022

RSC Adv.

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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.

Cited by 31 publications

References 30 publications

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

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

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

Synergy effect of CuO on CuCo₂O₄ for methane catalytic combustion

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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.

Cited by 31 publications

References 30 publications

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

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

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

Synergy effect of CuO on CuCo2O4 for methane catalytic combustion

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

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

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

Synergy effect of CuO on CuCo₂O₄ for methane catalytic combustion