An electron “donor–acceptor–donor” strategy to activate ZIF-67 as a cathode material for fuel cells and zinc ion hybrid supercapacitor

Mane, Rupali S.; Somkuwar, Vaishnavi; Bhattacharyya, Rama; Pradhan, Sayli; Ghosh, Prakash C.; Jha, Neetu

doi:10.1039/d2re00357k

Cited by 7 publications

(5 citation statements)

References 46 publications

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“…Benefitted by the synergy between high specific surface area, high pore volume, and abundant heteroatom contents, the S, N-CNC-based ZIHSCs have demonstrated excellent energy–power combination, as shown in the Ragone plot (Figure e). Notably, the energy density of the as-assembled Zn//S, N-CNC ZIHSC could reach 148.9 W h kg –1 at a power density of 900 W kg –1 (based on the mass loading of active material on the cathode), which is significantly better than most of the ZIHSCs reported in recent times, including NPG//ZnSO 4 //Zn, AC//ZnSO 4 //Zn, WC6ZnN-12 U//ZnSO 4 //Zn, MSCP//ZnSO 4 //Zn, NPC//ZnSO 4 //Zn, Al-Co/NGC-800//ZnSO 4 //Zn, and NSPCN-800//ZnSO 4 //Zn . Moreover, even at a high current rate, the ZIHSC could deliver an energy density of 60.6 W h kg –1 at a high power density of 7.2 kW kg –1 .…”

Section: Resultsmentioning

confidence: 82%

Energy-Dense Zinc Ion Hybrid Supercapacitors with S, N Dual-Doped Porous Carbon Nanocube Based Cathodes

Gupta,

Dahiya,

Rathore

et al. 2023

ACS Appl. Mater. Interfaces

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Zinc ion hybrid supercapacitors (ZIHSCs) are truly promising as next-generation high-performance energy storage systems because they could offer high energy density like batteries while exhibiting high power output and long cycle life traits of supercapacitors. The key point of constructing a high-performance ZIHSC is to couple the Zn anode with an appropriate cathode material, which has high theoretical capacity, cost-effectiveness, and intrinsic safety features. In this work, we have demonstrated the potentiality of S, N co-doped porous carbon nanocubes (S, N-CNCs) as a cathode material for devising a ZIHSC with excellent energy density and cycle life. The S, N-CNCs are prepared from a zeolitic imidazolate framework (ZIF)-8 precursor via a simultaneous pyrolyzing-doping strategy in an inert atmosphere. Resultant CNCs are monodisperse with an average size of around 65 nm and porous in nature, with uniform N and S doping throughout the structure. Benefitted from such hierarchical porous architecture and the presence of abundant heteroatoms, the assembled ZIHSC with S, N-CNC as the cathode and Zn-foil as the anode in a ZnSO 4 aqueous electrolyte could reach a specific capacity as high as 165.5 mA h g −1 (331 F g −1 ) at 1 A g −1 , which corresponds to a satisfactory energy density of 148.9 W h kg −1 at the power density of 900 W kg −1 . The ZIHSC has displayed a good cycle stability with more than 70% capacity retention after 10,000 charge−discharge cycles. Furthermore, to verify the practical feasibility of such a cathode material, an aqueous 3D Zn@Cu//S, N-CNC full-cell device is fabricated, which has demonstrated a satisfactory specific capacity (49.6 mAh g −1 at 0.25 A g −1 ) and an impressive energy density (42.2 Wh kg −1 with 212.2 W kg −1 ). Full ZIHSC devices are also found to be efficient in powering light-emitting diodes, further substantiating their feasibility in nextgeneration energy storage applications.

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Section: Resultsmentioning

confidence: 82%

Energy-Dense Zinc Ion Hybrid Supercapacitors with S, N Dual-Doped Porous Carbon Nanocube Based Cathodes

Gupta,

Dahiya,

Rathore

et al. 2023

ACS Appl. Mater. Interfaces

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“…It has a typical zeolite topological structure with abundant pores . Due to excellent chemical and thermal stability, ZIF-67 and its derivatives have potential applications in fields such as adsorption and separation, , electrode material, , biomedicine, , and catalysis. , In general, the physical and chemical properties of ZIF-67 are determined by particle morphology and size. ,, Chen et al investigated the antibacterial activity of ZIF-67 against Saccharomyces cerevisiae and found that the ZIF-67 nanocube performed better than the ZIF-67 rhombic dodecahedron, and the smaller the size of ZIF-67, the poorer the antibacterial activity. Li et al demonstrated that ZIF-67 showed adjustable CO 2 adsorption behaviors during the evolution from the 3D to 2D phase.…”

Section: Introductionmentioning

confidence: 99%

Structure Screening of Oscillating Feedback Microreactors for the High-Throughput Synthesis of Zeolitic Imidazolate Framework-67 Nanoparticles with Controlled Size and Morphology

Chen,

Zhang,

Gao

et al. 2024

Ind. Eng. Chem. Res.

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The relationship between the flow pattern evolution and performance of oscillating feedback microreactors (OFMs) for the synthesis of ZIF-67 nanoparticles was investigated by a photomicrography technique. Accordingly, an oscillating feedback microreactor (OFM) with an optimized structure was identified for high-throughput ZIF-67 production. By varying the experimental conditions (i.e., flow rate, aging time, precursor concentration [Co 2+ ], solvent, and cobalt source), the average size of ZIF-67 products can be adjusted (from 16 to 294 nm) with narrow particle size distribution (geometric standard deviation: 1.08−1.14) as well as with controllable morphology (sphere or rhombic dodecahedron). The maximum total flow rate can reach 160 mL/min, indicating that a highthroughput synthesis of ZIF-67 is achieved. The screening method can be extended to optimize other microreactors, and the resulting OFMs can be applied to produce other kinds of nanoparticles.

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“…19 High temperature-treated ZIF-based electrocatalysts show improved conductivity and produce atomically dispersed M-Nx type active centres. 20 The active centres that are located at the electrode-electrolyte interface contribute to the electrocatalytic activity, while those trapped inside the deep carbon network are electrochemically inactive. 16 Although there are several reports on ZIF based electrocatalysts confirming their high electrochemical activity in terms of the number of active catalytic centres, surface area, porosity and so forth.…”

Section: Introductionmentioning

confidence: 99%

“…To address these issues, pyrolysis is one of the preferred techniques 19 . High temperature‐treated ZIF‐based electrocatalysts show improved conductivity and produce atomically dispersed M‐Nx type active centres 20 . The active centres that are located at the electrode‐electrolyte interface contribute to the electrocatalytic activity, while those trapped inside the deep carbon network are electrochemically inactive 16 .…”

Section: Introductionmentioning

confidence: 99%

A novel hierarchically hybrid structure of MXene and bi‐ligand ZIF‐67 based trifunctional electrocatalyst for zinc‐air battery and water splitting

Mane,

Somkuwar

et al. 2023

Battery Energy

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The development of cost‐effective and durable electrocatalysts possesses a broad spectrum of applications in sustainable energy systems. Herein, a hierarchical composite of Co‐based bi‐ligand zeolite imidazole framework (ZIF‐67) with highly conducting 2D MXene as highly efficient noble metal free electrocatalyst for electrochemical oxygen reduction reaction (ORR), complete water splitting, along with zinc‐air battery (ZAB) has been studied. ZIF‐67 is reported as an efficient electrocatalyst due to its porous structures, high surface area and atomically dispersed active metal centres while low conductivity and structural instability have been addressed by pyrolysis. In this work, structural disintegration due to temperature effect has been handled by using bi‐ligand linkers in ZIF (b‐ZIF‐67) which controls its sharp morphology and uniform mesoporous structure. This b‐ZIF‐67 has been supported on highly conducting 2D MXene material which exposes ample accessible active sites to accelerate the electroactivity of the synthesized catalyst. The resultant b‐CZIF‐67/MXene catalyst exhibits superior onset of 0.91 and 0.93 V in acidic and alkaline medium respectively for ORR. At the current density of 10 mA/cm2 catalyst shows a very low overpotential of 0.170 mV and 1.47 V for HER and OER, respectively. The excellent specific charge storage of 550.6 mAh/g was displayed by the homemade ZAB pouch.

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An electron “donor–acceptor–donor” strategy to activate ZIF-67 as a cathode material for fuel cells and zinc ion hybrid supercapacitor

Abstract: Rational design of non-precious and efficient electrocatalyst for oxygen reduction reaction (ORR) is of utmost importance for sustainable energy exploitation, to solve the energy crisis and environmental jeopardy. In this...

Cited by 7 publications

References 46 publications

Energy-Dense Zinc Ion Hybrid Supercapacitors with S, N Dual-Doped Porous Carbon Nanocube Based Cathodes

Energy-Dense Zinc Ion Hybrid Supercapacitors with S, N Dual-Doped Porous Carbon Nanocube Based Cathodes

Structure Screening of Oscillating Feedback Microreactors for the High-Throughput Synthesis of Zeolitic Imidazolate Framework-67 Nanoparticles with Controlled Size and Morphology

A novel hierarchically hybrid structure of MXene and bi‐ligand ZIF‐67 based trifunctional electrocatalyst for zinc‐air battery and water splitting

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