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本文阐述了近年来钴金属有机骨架(Co-MOFs)材料在超级电容器电极材料方面的研究进展,并对Co-MOFs材料和Co-MOFs衍生的氧化钴、钴氢氧化物、碳材料以及复合材料等用作超级电容器电极材料进行了分类总结,旨在为广大研究者提供相关方面的报道. 相似文献
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随着电子技术的持续发展, 对供电设备的要求也相应提高。超级电容器(SCs)具有较高的能量密度和优异的功率输出性能, 是新一代小型化、智能化、可穿戴电子设备的理想供电装置。开发能够快速充放电、性能稳定的SCs产品是储能领域的研究重点。电极材料作为SCs最重要的组成部分, 是进一步提升其性能的关键。导电金属有机骨架(MOFs)作为新型SCs电极材料, 具有规整的孔道结构、大比表面积、多种形貌及维度、可调控的导电性能等优异性质, 展现出巨大的潜力并引起了广泛关注。本文结合SCs的储能机理, 介绍了导电MOFs的结构、制备及导电机制, 进一步阐述了其作为SCs电极材料的设计策略, 重点综述了其在SCs领域的研究进展, 并展望了其应用前景与发展方向。 相似文献
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《新型炭材料》2021,(1)
电容去离子(CDI)技术因低能耗、低成本和低污染等优点被认为是新型的脱盐技术,其中的电极材料是CDI模块的核心部件。理想的电极材料应具有分层的多孔结构、良好的表面特性和优异的电化学性能等特点。金属有机骨架(MOFs)衍生炭因其可控的形貌结构、合适的孔径分布和优异的导电性,成为一种有发展前景的CDI电极材料。本文介绍了CDI技术和MOFs衍生炭的特点,综述了MOFs衍生炭、改性MOFs衍生炭、杂原子掺杂MOFs衍生炭和MOFs衍生炭复合材料在电容去离子电极材料中发展的最新前沿动态,并总结了MOFs衍生炭电极材料应用于CDI技术的优势及其当前面临的挑战。最后,预测了MOFs衍生炭在CDI电极材料的发展趋势。 相似文献
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Antonysamy Dennyson Savariraj Chellan Justin Raj Amol Marotrao Kale Byung Chul Kim 《Small (Weinheim an der Bergstrasse, Germany)》2023,19(20):2207713
Among several electrocatalysts for energy storage purposes including supercapacitors, metal–organic frameworks (MOFs), and their derivatives have spurred wide spread interest owing to their structural merits, multifariousness with tailor-made functionalities and tunable pore sizes. The electrochemical performance of supercapacitors can be further enhanced using in situ grown MOFs and their derivatives, eliminating the role of insulating binders whose “dead mass” contribution hampers the device capability otherwise. The expulsion of binders not only ensures better adhesion of catalyst material with the current collector but also facilitates the transport of electron and electrolyte ions and remedy cycle performance deterioration with better chemical stability. This review systematically summarizes different kinds of metal–ligand combinations for in situ grown MOFs and derivatives, preparation techniques, modification strategies, properties, and charge transport mechanisms as freestanding electrode materials in determining the performance of supercapacitors. In the end, the review also highlights potential promises, challenges, and state-of-the-art advancement in the rational design of electrodes to overcome the bottlenecks and to improve the capability of MOFs in energy storage applications. 相似文献
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Jiao Chen Zhang Wei-ke Su Fang-yuan Yang Hong-yan Liu Rui-xiang Chen Cheng-meng 《新型炭材料》2017,(2):106-115
Supercapacitors have great potential applications for electronic devices, and energy recyling and storage areas owing to their high power density, long cycle life, high safety and excellent performance at low temperatures. The electrode materials and electrolytes are two key factors that influence their performance. The electrode materials used in supercapacitors include carbon materials such as activated carbons, carbon nanotubes, graphene, carbon nanofibers and carbon nano-onions, metal oxides, conductive polymers and their composites. The electrolytes are aqueous electrolytes, organic electrolytes or ionic liquids. Here research progress on the electrode materials and liquid electrolytes for supercapacitors is summarized, their advantages and disadvantages are analyzed, and new electrode materials and electrolytes are suggested. 相似文献
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Yan Li Yuxia Xu Wenping Yang Wanxin Shen Huaiguo Xue Huan Pang 《Small (Weinheim an der Bergstrasse, Germany)》2018,14(25)
Over the past two decades, metal–organic frameworks (MOFs), a type of porous material, have aroused great interest as precursors or templates for the derivation of metal oxides and composites for the next generation of electrochemical energy storage applications owing to their high specific surface areas, controllable structures, and adjustable pore sizes. The electrode materials, which affect the performance in practical applications, are pivotal components of batteries and supercapacitors. Metal oxide composites derived from metal–organic frameworks possessing high reversible capacity and superior rate and cycle performance are excellent electrode materials. In this Review, potential applications for MOF‐derived metal oxide composites for lithium‐ion batteries, sodium‐ion batteries, lithium–oxygen batteries, and supercapacitors are studied and summarized. Finally, the challenges and opportunities for future research on MOF‐derived metal oxide composites are proposed on the basis of academic knowledge from the reported literature as well as from experimental experience. 相似文献
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Ultrathin Hierarchical Porous Carbon Nanosheets for High‐Performance Supercapacitors and Redox Electrolyte Energy Storage 下载免费PDF全文
Kolleboyina Jayaramulu Deepak P. Dubal Bhawna Nagar Vaclav Ranc Ondrej Tomanec Martin Petr Kasibhatta Kumara Ramanatha Datta Radek Zboril Pedro Gómez‐Romero Roland A. Fischer 《Advanced materials (Deerfield Beach, Fla.)》2018,30(15)
The design of advanced high‐energy‐density supercapacitors requires the design of unique materials that combine hierarchical nanoporous structures with high surface area to facilitate ion transport and excellent electrolyte permeability. Here, shape‐controlled 2D nanoporous carbon sheets (NPSs) with graphitic wall structure through the pyrolysis of metal–organic frameworks (MOFs) are developed. As a proof‐of‐concept application, the obtained NPSs are used as the electrode material for a supercapacitor. The carbon‐sheet‐based symmetric cell shows an ultrahigh Brunauer–Emmett–Teller (BET)‐area‐normalized capacitance of 21.4 µF cm?2 (233 F g?1), exceeding other carbon‐based supercapacitors. The addition of potassium iodide as redox‐active species in a sulfuric acid (supporting electrolyte) leads to the ground‐breaking enhancement in the energy density up to 90 Wh kg?1, which is higher than commercial aqueous rechargeable batteries, maintaining its superior power density. Thus, the new material provides a double profits strategy such as battery‐level energy and capacitor‐level power density. 相似文献
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金属氧化物超级电容器及其应用研究进展 总被引:13,自引:0,他引:13
超级电容器作为一种新型储能装置,与蓄电池相比具有较高的比功率,与传统电容器相比具有较高的比能量、容量大、运行温度范围宽,循环寿命长,引起了人们的广泛关注。本文综述了超级电容器的储能原理,特点,应用范围等,并详细介绍了用金属氧化物及水合物做电极材料的超级电容器的最新研究进展。 相似文献
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Yongfeng Zhi Zongrui Wang Hao‐Li Zhang Qichun Zhang 《Small (Weinheim an der Bergstrasse, Germany)》2020,16(24)
Covalent organic frameworks (COFs), connecting different organic units into one system through covalent bonds, are crystalline organic porous materials with 2D or 3D networks. Compared with conventional porous materials such as inorganic zeolite, active carbon, and metal‐organic frameworks, COFs are a new type of porous materials with well‐designed pore structure, high surface area, outstanding stability, and easy functionalization at the molecular level, which have attracted extensive attention in various fields, such as energy storage, gas separation, sensing, photoluminescence, proton conduction, magnetic properties, drug delivery, and heterogeneous catalysis. Herein, the recent advances in metal‐free COFs as a versatile platform for heterogeneous catalysis in a wide range of chemical reactions are presented and the synthetic strategy and promising catalytic applications of COF‐based catalysts (including photocatalysis) are summarized. According to the types of catalytic reactions, this review is divided into the following five parts for discussion: achiral organic catalysis, chiral organic conversion, photocatalytic organic reactions, photocatalytic energy conversion (including water splitting and the reduction of carbon dioxide), and photocatalytic pollutant degradation. Furthermore, the remaining challenges and prospects of COFs as heterogeneous catalysts are also presented. 相似文献
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Yusran Yusran Hui Li Xinyu Guan Daohao Li Lingxue Tang Ming Xue Zhongbin Zhuang Yushan Yan Valentin Valtchev Shilun Qiu Qianrong Fang 《Advanced materials (Deerfield Beach, Fla.)》2020,32(8):1907289
The electrochemical double-layer capacitors (EDLCs) are highly demanded electrical energy storage devices due to their high power density with thousands of cycle life compared with pseudocapacitors and batteries. Herein, a series of capacitor cells composed of exfoliated mesoporous 2D covalent organic frameworks (e-COFs) that are able to perform excellent double-layer charge storage is reported. The selected mesoporous 2D COFs possess eclipsed AA layer-stacking mode with 3.4 nm square-like open channels, favorable BET surface areas (up to 1170 m2 g−1), and high thermal and chemical stabilities. The COFs via the facile, scalable, and mild chemical exfoliation method are further exfoliated to produce thin-layer structure with average thickness of about 22 nm. The e-COF-based capacitor cells achieve high areal capacitance (5.46 mF cm−2 at 1,000 mV s−1), high gravimetric power (55 kW kg−1), and relatively low τ0 value (121 ms). More importantly, they perform nearly an ideal DL charge storage at high charge–discharge rate (up to 30 000 mV s−1) and maintain almost 100% capacitance stability even after 10 000 cycles. This study thus provides insights into the potential utilization of COF materials for EDLCs. 相似文献
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Qingyong Wang Yumei Luo Ruizuo Hou Shahid Zaman Kai Qi Hongfang Liu Ho Seok Park Bao Yu Xia 《Advanced materials (Deerfield Beach, Fla.)》2019,31(51)
The development of efficient electrode materials is a cutting‐edge approach for high‐performance energy storage devices. Herein, an effective chemical redox approach is reported for tuning the crystalline and electronic structures of bimetallic cobalt/nickel–organic frameworks (Co‐Ni MOFs) to boost faradaic redox reaction for high energy density. The as‐obtained cobalt/nickel boride/sulfide exhibits a high specific capacitance (1281 F g?1 at 1 A g?1), remarkable rate performance (802.9 F g?1 at 20 A g?1), and outstanding cycling stability (92.1% retention after 10 000 cycles). An energy storage device fabricated with a cobalt/nickel boride/sulfide electrode exhibits a high energy density of 50.0 Wh kg?1 at a power density of 857.7 W kg?1, and capacity retention of 87.7% (up to 5000 cycles at 12 A g?1). Such an effective redox approach realizes the systematic electronic tuning that activates the fast faradaic reactions of the metal species in cobalt/nickel boride/sulfide which may shed substantial light on inspiring MOFs and their derivatives for energy storage devices. 相似文献
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Efficient Supercapacitor Energy Storage Using Conjugated Microporous Polymer Networks Synthesized from Buchwald–Hartwig Coupling 下载免费PDF全文
Yaozu Liao Haige Wang Meifang Zhu Arne Thomas 《Advanced materials (Deerfield Beach, Fla.)》2018,30(12)
Supercapacitors have received increasing interest as energy storage devices due to their rapid charge–discharge rates, high power densities, and high durability. In this work, novel conjugated microporous polymer (CMP) networks are presented for supercapacitor energy storage, namely 3D polyaminoanthraquinone (PAQ) networks synthesized via Buchwald–Hartwig coupling between 2,6‐diaminoanthraquinone and aryl bromides. PAQs exhibit surface areas up to 600 m2 g?1, good dispersibility in polar solvents, and can be processed to flexible electrodes. The PAQs exhibit a three‐electrode specific capacitance of 576 F g?1 in 0.5 m H2SO4 at a current of 1 A g?1 retaining 80–85% capacitances and nearly 100% Coulombic efficiencies (95–98%) upon 6000 cycles at a current density of 2 A g?1. Asymmetric two‐electrode supercapacitors assembled by PAQs show a capacitance of 168 F g?1 of total electrode materials, an energy density of 60 Wh kg?1 at a power density of 1300 W kg?1, and a wide working potential window (0–1.6 V). The asymmetric supercapacitors show Coulombic efficiencies up to 97% and can retain 95.5% of initial capacitance undergo 2000 cycles. This work thus presents novel promising CMP networks for charge energy storage. 相似文献