دورية أكاديمية
أعرض في EDS

Insights into the electric double-layer capacitance of two-dimensional electrically conductive metal-organic frameworks.

التفاصيل البيبلوغرافية
العنوان: Insights into the electric double-layer capacitance of two-dimensional electrically conductive metal-organic frameworks.
المؤلفون: Gittins JW; Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK acf50@cam.ac.uk., Balhatchet CJ; Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK acf50@cam.ac.uk., Chen Y; Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK acf50@cam.ac.uk.; Department of Chemistry, Imperial College London Exhibition Road London SW7 2AZ UK.; The Faraday Institution Quad One, Harwell Science and Innovation Campus Didcot OX11 0RA UK., Liu C; Cavendish Laboratory, University of Cambridge JJ Thomson Avenue Cambridge CB3 0HE UK., Madden DG; Adsorption & Advanced Materials Laboratory (A2ML), Department of Chemical Engineering & Biotechnology, University of Cambridge Philippa Fawcett Drive Cambridge CB3 0AS UK., Britto S; Diamond Light Source, Harwell Science and Innovation Campus Didcot OX11 0DE UK., Golomb MJ; Department of Materials, Imperial College London Exhibition Road London SW7 2AZ UK., Walsh A; Department of Materials, Imperial College London Exhibition Road London SW7 2AZ UK., Fairen-Jimenez D; Adsorption & Advanced Materials Laboratory (A2ML), Department of Chemical Engineering & Biotechnology, University of Cambridge Philippa Fawcett Drive Cambridge CB3 0AS UK., Dutton SE; Cavendish Laboratory, University of Cambridge JJ Thomson Avenue Cambridge CB3 0HE UK., Forse AC; Yusuf Hamied Department of Chemistry, University of Cambridge Lensfield Road Cambridge CB2 1EW UK acf50@cam.ac.uk.
المصدر: Journal of materials chemistry. A [J Mater Chem A Mater] 2021 Jun 25; Vol. 9 (29), pp. 16006-16015. Date of Electronic Publication: 2021 Jun 25 (Print Publication: 2021).
نوع المنشور: Journal Article
اللغة: English
بيانات الدورية: Publisher: Royal Society of Chemistry Pub Country of Publication: England NLM ID: 101596773 Publication Model: eCollection Cited Medium: Print ISSN: 2050-7488 (Print) NLM ISO Abbreviation: J Mater Chem A Mater Subsets: PubMed not MEDLINE
أسماء مطبوعة: Original Publication: Cambridge : Royal Society of Chemistry Pub.
مستخلص: Two-dimensional electrically conductive metal-organic frameworks (MOFs) have emerged as promising model electrodes for use in electric double-layer capacitors (EDLCs). However, a number of fundamental questions about the behaviour of this class of materials in EDLCs remain unanswered, including the effect of the identity of the metal node and organic linker molecule on capacitive performance, and the limitations of current conductive MOFs in these devices relative to traditional activated carbon electrode materials. Herein, we address both these questions via a detailed study of the capacitive performance of the framework Cu 3 (HHTP) 2 (HHTP = 2,3,6,7,10,11-hexahydroxytriphenylene) with an acetonitrile-based electrolyte, finding a specific capacitance of 110-114 F g -1 at current densities of 0.04-0.05 A g -1 and a modest rate capability. By directly comparing its performance with the previously reported analogue, Ni 3 (HITP) 2 (HITP = 2,3,6,7,10,11-hexaiminotriphenylene), we illustrate that capacitive performance is largely independent of the identity of the metal node and organic linker molecule in these nearly isostructural MOFs. Importantly, this result suggests that EDLC performance in general is uniquely defined by the 3D structure of the electrodes and the electrolyte, a significant finding not demonstrated using traditional electrode materials. Finally, we probe the limitations of Cu 3 (HHTP) 2 in EDLCs, finding a limited stable double-layer voltage window of 1 V and only a modest capacitance retention of 81% over 30 000 cycles, both significantly lower than state-of-the-art porous carbons. These important insights will aid the design of future conductive MOFs with greater EDLC performances.
Competing Interests: There are no conflicts to declare.
(This journal is © The Royal Society of Chemistry.)
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معلومات مُعتمدة: MR/T043024/1 United Kingdom MRC_ Medical Research Council
تواريخ الأحداث: Date Created: 20210806 Latest Revision: 20240402
رمز التحديث: 20240402
مُعرف محوري في PubMed: PMC8315177
DOI: 10.1039/d1ta04026j
PMID: 34354834
قاعدة البيانات: MEDLINE
الوصف
تدمد:2050-7488
DOI:10.1039/d1ta04026j