Metal-organic framework (MOF) derived electrodes with robust and fast lithium storage for Li-ion hybrid capacitors
Dubal, Deepak P. (Institut Català de Nanociència i Nanotecnologia)
Jayaramulu, Kolleboyina (Technical University of Munich. Department of Chemistry)
Sunil, Janaky (Jawaharlal Nehru Centre for Advanced Scientific Research)
Kment, Štěpán (Palacky University. Regional Centre of Advanced Technologies and Materials)
Gómez-Romero, Pedro 1959- (Institut Català de Nanociència i Nanotecnologia)
Narayana, Chandrabhas (Jawaharlal Nehru Centre for Advanced Scientific Research)
Zboril, Radek (Palacky University. Regional Centre of Advanced Technologies and Materials)
Fischer, Roland A. (Technical University of Munich. Department of Chemistry)

Data:	2019
Resum:	Hybrid metal-organic frameworks (MOFs) demonstrate great promise as ideal electrode materials for energy-related applications. Herein, a well-organized interleaved composite of graphene-like nanosheets embedded with MnO₂ nanoparticles (MnO₂@C-NS) using a manganese-based MOF and employed as a promising anode material for Li-ion hybrid capacitor (LIHC) is engineered. This unique hybrid architecture shows intriguing electrochemical properties including high reversible specific capacity 1054 mAh g (close to the theoretical capacity of MnO₂, 1232 mAh g ) at 0. 1 A g with remarkable rate capability and cyclic stability (90% over 1000 cycles). Such a remarkable performance may be assigned to the hierarchical porous ultrathin carbon nanosheets and tightly attached MnO nanoparticles, which provide structural stability and low contact resistance during repetitive lithiation/delithiation processes. Moreover, a novel LIHC is assembled using a MnO₂@C-NS anode and MOF derived ultrathin nanoporous carbon nanosheets (derived from other potassium-based MOFs) cathode materials. The LIHC full-cell delivers an ultrahigh specific energy of 166 Wh kg at 550 W kg and maintained to 49. 2 Wh kg even at high specific power of 3. 5 kW kg as well as long cycling stability (91% over 5000 cycles). This work opens new opportunities for designing advanced MOF derived electrodes for next-generation energy storage devices.
Drets:	Aquest material està protegit per drets d'autor i/o drets afins. Podeu utilitzar aquest material en funció del que permet la legislació de drets d'autor i drets afins d'aplicació al vostre cas. Per a d'altres usos heu d'obtenir permís del(s) titular(s) de drets.
Llengua:	Anglès
Document:	Article ; recerca ; Versió sotmesa a revisió
Matèria:	Energy density ; Energy storage ; Li-ion capacitors ; Manganese oxide ; MOF-derived materials ; Nanoporous carbon
Publicat a:	Advanced functional materials, Vol. 29, issue 19 (May 2019) , art. 1900532, ISSN 1616-3028

DOI: 10.1002/adfm.201900532

Preprint 46 p, 2.7 MB

El registre apareix a les col·leccions:
Documents de recerca > Documents dels grups de recerca de la UAB > Centres i grups de recerca (producció científica) > Ciències > Institut Català de Nanociència i Nanotecnologia (ICN2)
Articles > Articles de recerca
Articles > Articles publicats