ORCID Profile
0000-0002-8483-0532
Current Organisation
The Hong Kong Polytechnic University
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Publisher: Elsevier BV
Date: 04-2018
Publisher: Elsevier BV
Date: 10-2017
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6TA01344A
Abstract: The harmful pulverization and ensuing poor cyclic stability of Si anodes are successfully addressed by mesoporous Si/C microspheres with greatly reduced volume expansion.
Publisher: American Chemical Society (ACS)
Date: 24-08-2023
Publisher: Elsevier BV
Date: 07-2015
Publisher: Elsevier BV
Date: 11-2015
Publisher: American Chemical Society (ACS)
Date: 09-06-2015
Abstract: A facile electrospinning method with subsequent heat treatments is employed to prepare carbon nanofibers (CNFs) containing uniformly dispersed Co3O4 nanoparticles as electrodes for supercapacitors. The Co3O4/CNF electrodes with ∼68 wt % active particles deliver a remarkable capacitance of 586 F g(-1) at a current density of 1 A g(-1). When the current density is increased to 50 A g(-1), ∼66% of the original capacitance is retained. The electrodes also present excellent cyclic stability of 74% capacity retention after 2000 cycles at 2 A g(-1). These superior electrochemical properties are attributed to the uniform dispersion of active particles in the CNF matrix, which functions as a conductive support. The onionlike graphitic layers formed around the Co3O4 nanoparticles not only improve the electrical conductivity of the electrode but also prevent the separation of the nanoparticles from the carbon matrix.
Publisher: Royal Society of Chemistry (RSC)
Date: 2017
DOI: 10.1039/C6TA08929A
Abstract: A freestanding electrode consisting of heterogeneous arrays of NiCo 2 O 4 –MnO 2 on a 3D conductive network of graphene foam shows exceptional supercapacitive performance.
Publisher: Elsevier BV
Date: 03-2014
Publisher: Elsevier BV
Date: 06-2016
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9NR01440C
Abstract: Porous silicon nanosheets are fabricated and exhibit good capacity and superb cyclability. Molecular dynamics simulation is performed to reveal the capacity-porosity correlation.
Publisher: Royal Society of Chemistry (RSC)
Date: 2016
DOI: 10.1039/C6TA03541H
Abstract: A low crystallinity SnO 2 /CNT composite anode delivers a superior electrochemical performance in Na-ion batteries through enhanced kinetics of conversion reactions with a faster ion diffusion rate.
Publisher: Wiley
Date: 21-12-2013
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5TA02916C
Abstract: Cobalt carbonate hydroxide/graphene aerogel and cobalt carbonate/graphene aerogel (CCH/GA and CC/GA) composites are synthesized as supercapacitor electrodes via a one-pot hydrothermal method.
Publisher: Elsevier BV
Date: 07-2017
Publisher: Wiley
Date: 06-01-2017
Publisher: Wiley
Date: 12-12-2017
Publisher: Elsevier BV
Date: 2019
Publisher: Elsevier BV
Date: 07-2017
Publisher: Elsevier BV
Date: 04-2016
Publisher: Elsevier BV
Date: 05-2014
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4TA04257C
Abstract: Multi-functionalized carbon nanofibers containing nanocavity-engineered Si particles as durable high-rate Li-ion anodes were fabricated via a facile electrospinning method.
Publisher: American Chemical Society (ACS)
Date: 14-10-2016
Abstract: Three-dimensional graphene aerogel/TiO
Publisher: American Chemical Society (ACS)
Date: 28-10-2014
DOI: 10.1021/AM504851S
Abstract: Nanocomposites consisting of ultrafine, cobalt carbonate nanoneedles and 3D porous graphene aerogel (CoCO3/GA) are in situ synthesized based on a one-step hydrothermal route followed by freeze-drying. A further heat treatment produces cobalt oxide nanoparticles embedded in the conductive GA matrix (Co(3)O(4)/GA). Both the composite anodes deliver excellent specific capacities depending on current density employed: the CoCO(3)/GA anode outperforms the Co(3)O(4)/GA anode at low current densities, and vice versa at current densities higher than 500 mA g(-1). Their electrochemical performances are considered among the best of similar composite anodes consisting of CoCO(3) or Co(3)O(4) active particles embedded in a graphene substrate. The stable multistep electrochemical reactions of the carbonate compound with a unique nanoneedle structure contribute to the excellent cyclic stability of the CoCO(3)/GA electrode, whereas the highly conductive networks along with low charge transfer resistance are responsible for the high rate performance of the Co(3)O(4)/GA electrode.
Publisher: Elsevier BV
Date: 04-2016
Publisher: IEEE
Date: 07-2017
Publisher: American Chemical Society (ACS)
Date: 10-06-2021
Publisher: Elsevier BV
Date: 08-1973
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4TA03206C
Abstract: This paper reports a facile route to synthesize porous carbon nanofibers containing cobalt and cobalt oxide nanoparticles (CoO x /PCNF) as anodes for Li-ion batteries.
Publisher: Wiley
Date: 19-12-2016
No related grants have been discovered for Zheng-Long Xu.