ORCID Profile
0000-0002-5926-2019
Current Organisation
City University of Hong Kong
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Publisher: Elsevier BV
Date: 03-2022
Publisher: Wiley
Date: 09-12-2022
Abstract: Recently metal‐organic framework (MOF) derived electrode materials have grown considerable research interest in the field of supercapacitor (SC) technology. Herein, MOF‐derived Zr‐Mn‐oxide is successively combined with solution‐free CuO nanowires not only to avoid the structural limitations of MOF but also to fabricate a positive‐negative hybrid electrode material. The MOF‐derived mixed metal oxide prepared through in situ fabrication allows the uniform and unidirectional growth of oriented Zr‐Mn‐oxide@CuO@Cu. The hybrid electrode exhibited over 100% stability after 20,000 cycles in a three‐electrode setup with a wide potential window range of 1.2 V (−0.6 to 0.6 V). Further, the obtained Zr‐Mn‐oxide@CuO@Cu hybrid electrode exhibited 14.1‐ and 5.5‐fold higher capacity over its MOF‐derived Zr‐Mn‐oxide counterpart (−0.6 to 0.1 V) and CuO (0.0 to 0.5 V), respectively. Additionally, the hybrid device with hybrid Zr‐Mn‐oxide@CuO@Cu as the positive electrode and reduced graphene oxide as the negative electrode also displayed promising energy and power densities. Furthermore, density functional theory calculations are employed to study the hybrid electrode material's properties. Overall, the unidirectional and vertically aligned MOF‐derived Zr‐Mn‐oxide@CuO@Cu hybrid electrode material with notable electrochemical performance can be useful for the fabrication of next‐generation supercapacitor electrodes.
Publisher: Elsevier BV
Date: 11-2021
Publisher: Elsevier BV
Date: 11-2019
Publisher: Elsevier BV
Date: 12-2020
Publisher: American Chemical Society (ACS)
Date: 02-2022
Abstract: Not only are new and novel materials sought for electrode material development, but safe and nontoxic materials are also highly being intensively investigated. Herein, we prepare ZnNiBO
Publisher: Elsevier BV
Date: 06-2012
Publisher: Elsevier BV
Date: 06-2020
Publisher: Wiley
Date: 05-05-2023
Abstract: Batteries and supercapacitors continue to be one of the most researched topics in the class of energy storage devices. The continuous development of battery and supercapacitor cell components has shown promising development throughout the years—from slabs of pure metal to porous and tailored structures of metal‐based active materials. In this direction, metal–organic frameworks (MOFs) serve great advantages in improving the properties and structure of the derived metal‐based active materials. This research provides a novel electrode material, Ni–Co–Se/C@CuO, derived from Ni–Co‐MOF integrated with pre‐oxidized Cu mesh. The superior electrochemical performance of Ni–Co–Se/C@CuO over Ni–Co‐MOF@CuO is evident through its higher specific capacity, lower resistivity, richer redox activity, and more favorable diffusion‐dominated storage mechanism. When assembled as a hybrid supercapacitor (HSC), the hybrid device using rGO and Ni–Co–Se/C@CuO as electrodes exhibits a high energy density of 42 W h kg −1 at a power density of 2 kW kg −1 , and maintains its capacity retention even after 20 000 cycles. The improved capacity performance is also evaluated using first‐principle investigations, revealing that the unique and preserved heterostructure of Ni–Co–Se/C@CuO portrays enhanced metallic properties. Such evaluation of novel electrodes with superior properties may benefit next‐generation electrodes for supercapacitor devices.
Publisher: Elsevier BV
Date: 06-2021
Publisher: Royal Society of Chemistry (RSC)
Date: 2021
DOI: 10.1039/D1TA04855D
Abstract: We proposed an effective strategy to address the structural limitations of metal organic frameworks for energy storage devices. An oriented n-type Ni–Co-MOF was grown on solution-free p-type CuO nanowires.
Publisher: American Chemical Society (ACS)
Date: 23-03-2023
Location: France
No related grants have been discovered for Kaili Zhang.