A zinc ion hybrid capacitor based on sharpened pencil-like hierarchically porous carbon derived from metal–organic framework

Li, Hongxia; Wu, Jie; Wang, Letong; Liao, Quanxing; Niu, Xiaohui; Zhang, Deyi; Wang, Kunjie

doi:10.1016/j.cej.2021.131071

Cited by 37 publications

(31 citation statements)

References 48 publications

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“…As shown in Fig. 3a, two diffraction peaks at around 2θ = 23°and 44°were detected in the XRD patterns, and they corresponded to the defective or amorphous (002) and graphitic (100) planes of carbon, respectively [36]. As the temperature increased from 800 to 1000°C, the (002) peak generally became narrower and sharper, which suggests the formation of a more ordered structure at high temperatures [37].…”

Section: Resultsmentioning

confidence: 89%

Molecular engineering toward sustainable development of multiple-doped hierarchical porous carbons for superior zinc ion storage

Liu

Feng

et al. 2022

Sci. China Mater.

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Aqueous Zn-ion hybrid supercapacitors (ZHSCs) hold great potential as next-generation energy storage devices due to their low cost, excellent rate capability, long cycling life, and high safety. Heteroatom-doped hierarchical porous carbons (HD-HPCs) with integrated high specific surface area, multiscale pores, and abundant defects have been regarded as promising cathode materials for ZHSCs. However, the in situ architecture of HD-HPCs with these multiple advantages via a sustainable and controllable method remains an arduous challenge. Herein, a novel molecular engineering strategy was proposed for the in situ construction of N/P/O-doped HD-HPCs via the direct carbonization of multiple-heteroatom-rich hypermolecules. Such a strategy has multiple advantages, including the exclusion of pore-making techniques, activation agents, templates, and complicated and hazard washing processes, demonstrating its green and sustainable properties. The highly active multiple-heteroatom-rich hypermolecular precursors contributed to the formation of abundant micro/mesopores due to the self-abscission of heteroatoms and heteroatom-contiguous carbon atoms at high carbonization temperatures. Consequently, these active structural/compositional features endowed the optimal cathodes with outstanding storage capacities of 139.2 and 88.9 mA h g −1 at 0.5 and 20 A g −1 for aqueous ZHSCs, respectively. They also delivered a superior storage performance in quasi-solid ZHSCs (QS-ZHSCs) with a high specific capacity of 111.5 mA h g −1 at 0.5 A g −1 . Superior energy/power densities and long cycling stability were also achieved for aqueous and QS-ZHSCs. The theoretical calculation confirmed the synergetic effects of multiple-atom doping on enhancing the electronic conductivity and reducing the energy barrier between Zn ions and carbon, which promote the Zn-ion adsorption capability. These findings shed fresh light on the straightforward manufacture of superior HD-HPCs for electrochemical energy storage.

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Section: Resultsmentioning

confidence: 89%

Molecular engineering toward sustainable development of multiple-doped hierarchical porous carbons for superior zinc ion storage

Liu

Feng

et al. 2022

Sci. China Mater.

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“…Although the specific surface area and pore volume of TWC-2 are lower than those of TWC-3, TWC-2 still exhibits better energy storage properties due to its higher oxygen content and oxygencontaining functional groups. 33 As the scan rate increased from 5 to 200 mV s À1 , the CV curve maintained a quasi-rectangular shape without noticeable distortion. Galvanostatic chargedischarge (GCD) experiments were performed at 0.5 A g À1 , 0.75 A g À1 , 1.0 A g À1 , 2.0 A g À1 , 5.0 A g À1 , 7.5 A g À1 and 10.0 A g À1 to further understand the supercapacitance properties of the TiN/CNTs@CC electrode.…”

Section: Electrochemical Measurementsmentioning

confidence: 90%

Fabrication of TiN/CNTs on carbon cloth substrates via a CVD–ALD method as free-standing electrodes for zinc ion hybrid capacitors

et al. 2022

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“…Reproduced with permission. [192] Copyright 2020, Elsevier. h) Schematic illustration of PA-COF//ZnSO 4 //Zn-foil-ZHSC along with charging/discharging process, i) synthesis process of PA-COF material, j) TEM and mapping images of PA-COF, k) CV profiles up to 3 cycles, l) rate-performance.…”

Section: Mofs/cofs Derived Materialsmentioning

confidence: 99%

Fundamentals and Scientific Challenges in Structural Design of Cathode Materials for Zinc‐Ion Hybrid Supercapacitors

Javed

Najam

Hussain

et al. 2022

Advanced Energy Materials

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One of the most exciting new developments in energy storage technology is Zn‐ion hybrid supercapacitors (ZHSCs). ZHSCs combine Zn‐ion batteries with supercapacitors (SCs) to address the energy and power needs of portable devices and electric automobiles. Low energy density and the development of cathode material are significant issues for ZHSCs. This review provides an in‐depth investigation of charge storage mechanisms from SCs to ZHSCs. The advantages/disadvantages of ZHSCs, the recent development of cathode materials, and the new design for device fabrications are critically summarized. New cathode materials should be developed to achieve high energy density while preserving the inherent power capability and stability. People increasingly engage with smart electronic and hybrid gadgets, demanding flexible, resilient, and highly safe energy storage devices. ZHSC has emerged as a complete alternative to risky sodium‐ion/lithium‐ion technologies. An overview of all reported carbon‐based, biomass‐derived carbons, metal oxides, MOFs, COFs, MXenes, graphene, and composite materials employed for ZHSCs is comprehensively provided. Furthermore, cathode materials for flexible, micro, wire‐shaped, printed, and photo‐rechargeable ZHSCs are also examined with their practical challenges. This review is anticipated to offer valuable recommendations for designing and manipulating cathode materials for high‐performance ZHSCs to achieve real‐world applications.

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A zinc ion hybrid capacitor based on sharpened pencil-like hierarchically porous carbon derived from metal–organic framework

Cited by 37 publications

References 48 publications

Molecular engineering toward sustainable development of multiple-doped hierarchical porous carbons for superior zinc ion storage

Molecular engineering toward sustainable development of multiple-doped hierarchical porous carbons for superior zinc ion storage

Fabrication of TiN/CNTs on carbon cloth substrates via a CVD–ALD method as free-standing electrodes for zinc ion hybrid capacitors

Fundamentals and Scientific Challenges in Structural Design of Cathode Materials for Zinc‐Ion Hybrid Supercapacitors

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