ORCID Profile
0000-0002-5557-4437
Current Organisations
City University of Hong Kong
,
Nanyang Technological University
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Publisher: Wiley
Date: 17-11-2012
Publisher: Wiley
Date: 17-08-2012
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3EE40260F
Publisher: Wiley
Date: 04-11-2013
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3EE43305F
Publisher: Wiley
Date: 23-12-2022
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3EE24134C
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/C0CC02973D
Abstract: TiO(2) and SnO(2)@TiO(2) hollow spheres assembled from anatase TiO(2) nanosheets with exposed (001) high-energy facets are constructed via a templating approach, and the as-prepared s les exhibit enhanced lithium storage properties.
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C3MH00077J
Publisher: American Chemical Society (ACS)
Date: 15-10-2012
DOI: 10.1021/JA307475C
Abstract: Fe(2)O(3) microboxes with hierarchically structured shells have been synthesized simply by annealing Prussian blue (PB) microcubes. By utilizing simultaneous oxidative decomposition of PB microcubes and crystal growth of iron oxide shells, we have demonstrated a scalable synthesis of anisotropic hollow structures with various shell architectures. When evaluated as an anode material for lithium ion batteries, the Fe(2)O(3) microboxes with a well-defined hollow structure and hierarchical shell manifested high specific capacity (~950 mA h g(-1) at 200 mA g(-1)) and excellent cycling performance.
Publisher: Royal Society of Chemistry (RSC)
Date: 04-08-2014
DOI: 10.1039/C4EE01932F
Publisher: Royal Society of Chemistry (RSC)
Date: 25-06-2013
DOI: 10.1039/C3EE41181H
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1JM13789A
Publisher: Wiley
Date: 26-03-2014
Abstract: One-dimensional Fe3O4/C composite microrods are synthesized via a facile one-pot solvothermal reaction in the presence of an external magnetic field. When evaluated as an anode material for lithium ion batteries, these Fe3O4/C microrods manifest high specific capacity and excellent cycling performance.
Publisher: Wiley
Date: 02-04-2013
Abstract: Hierarchical tubular structures constructed by ultrathin carbon-coated SnO(2) nanoplates are rationally designed and synthesized. This interesting structure simultaneously integrates the structural and compositional design rationales for high-energy anode materials based on low-dimensional ultrathin nanoplates, a hollow tubular structure, and a carbon nanocoating. When evaluated as an anode material for lithium-ion batteries, the as-synthesized SnO(2)-carbon hybrid structure manifests high specific capacity and excellent cycling stability.
Publisher: Wiley
Date: 14-03-2012
Abstract: Metal oxide hollow structures have received great attention because of their many promising applications in a wide range of fields. As electrode materials for lithium-ion batteries (LIBs), metal oxide hollow structures provide high specific capacity, superior rate capability, and improved cycling performance. In this Research News, we summarize the recent research activities in the synthesis of metal oxide hollow nanostructures with controlled shape, size,composition, and structural complexity, as well as their applications in LIBs. By focusing on hollow structures of some binary metal oxides (such as SnO 2 ,TiO 2 , Fe 2 O 3 , Co 3 O 4 ) and complex metal oxides, we seek to provide some rational understanding on the effect of nanostructure engineering on the electrochemical performance of the active materials. It is thus anticipated that this article will shed some light on the development of advanced electrode materials for next-generation LIBs.
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3CE40996A
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5CC01251A
Abstract: Carbon-coated Fe 3 O 4 microspheres with a porous multideck-cage structure manifest superior electrochemical lithium storage properties.
Publisher: American Chemical Society (ACS)
Date: 12-07-2013
DOI: 10.1021/JA401727N
Abstract: Increasing the complexity of hollow structures, in terms of chemical composition and shell architecture, is highly desirable for both fundamental studies and realization of various functionalities. Starting with metal-organic frameworks (MOFs), we demonstrate a general approach toward the large-scale and facile synthesis of complex hollow microboxes via manipulation of the template-engaged reactions between the Prussian blue (PB) template and different alkaline substances. The reaction between PB microcubes with NaOH solution leads to the formation of Fe(OH)3 microboxes with controllable multishelled structure. In addition, PB microcubes will react with the conjugate bases of metal oxide based weak acids, generating multicompositional microboxes (Fe2O3/SnO2, Fe2O3/SiO2, Fe2O3/GeO2, Fe2O3/Al2O3, and Fe2O3/B2O3), which consist of uniformly dispersed oxides/hydroxides of iron and another designed element. Such complex hollow structures and atomically integrated multiple compositions might bring the usual physiochemical properties. As an ex le, we demonstrate that these complex hollow microboxes, especially the Fe2O3/SnO2 composite microboxes, exhibit remarkable electrochemical performance as anode materials for lithium ion batteries.
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2CE25349F
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/C0CC00832J
Abstract: Anatase TiO(2) having different percentages of (001)/(101) surface demonstrated different behaviors for Li(+) ions insertion and much enhanced rate performance of Li-ion batteries.
Publisher: Springer Science and Business Media LLC
Date: 23-09-2014
DOI: 10.1038/NCOMMS5921
Abstract: Electrochromic smart windows are regarded as a good choice for green buildings. However, conventional devices need external biases to operate, which causes additional energy consumption. Here we report a self-powered electrochromic window, which can be used as a self-rechargeable battery. We use aluminium to reduce Prussian blue (PB, blue in colour) to Prussian white (PW, colourless) in potassium chloride electrolyte, realizing a device capable of self-bleaching. Interestingly, the device can be self-recovered (gaining blue appearance again) by simply disconnecting the aluminium and PB electrodes, which is due to the spontaneous oxidation of PW to PB by the dissolved oxygen in aqueous solution. The self-operated bleaching and colouration suggest another important function of the device: a self-rechargeable transparent battery. Thus the PB/aluminium device we report here is bifunctional, that is, it is a self-powered electrochromic window as well as a self-rechargeable transparent battery.
Publisher: Elsevier BV
Date: 07-2012
Publisher: Wiley
Date: 03-03-2014
Abstract: Hollow nanostructures are of great interest for a wide variety of applications. Despite the great advances, synthesis of anisotropic hollow structures is still very challenging. In this work, we have developed a simple sacrificial template method to synthesize uniform Ni(x)Co(3-x)S4 hollow nanoprisms with tunable composition. Tetragonal nanoprisms of nickel-cobalt acetate hydroxide precursors with controllable Ni/Co molar ratios are first synthesized and used as the sacrificial templates. After a sulfidation process with thioacetamide (TAA) in ethanol, the solid precursor prisms can be transformed into the corresponding Ni(x)Co(3-x)S4 hollow nanoprisms with a well-defined hollow interior. The intriguing structural and compositional features are beneficial for electrochemical applications. Impressively, the resultant Ni(x)Co(3-x)S4 hollow prisms manifest a high specific capacitance with enhanced cycling stability, making them potential electrode materials for supercapacitors.
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C2TA00223J
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2CC32750C
Abstract: Unusual CoS(2) ellipsoids with anisotropic tube-like cavities have been synthesized from the simultaneous thermal decomposition and sulfidation of a preformed cobalt carbonate precursor. The as-prepared CoS(2) ellipsoids show interesting supercapacitive properties with high capacitance and good cycling performance.
Publisher: Wiley
Date: 28-03-2014
Abstract: Hierarchical MoS2 shells supported on carbon spheres (denoted as C@MoS2) have been synthesized through a one-step hydrothermal method. The obtained hierarchical C@MoS2 microspheres simultaneously integrate the structural and compositional design rationales for high-energy electrode materials based on two-dimensional (2D) nanosheets. When evaluated as an anode material for lithium-ion batteries (LIBs), the hierarchical C@MoS2 microspheres manifest high specific capacity, enhanced cycling stability and good rate capability.
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1CC13929K
Abstract: We demonstrate an unusual formation of large 2D nanosheets from nanomosaic building blocks of anatase TiO(2) nanosheets with exposed (001) facets. It is proposed that large PVP molecules adsorbed on the (001) facets serve as the linker that brings building blocks together, at the same time prevents them from stacking along the c-axis.
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C1CC13658E
Abstract: Yolk/shell or 'rattle-typed' nanomaterials with nanoparticle cores inside hollow shells are interesting among the complex hollow nanostructures. Yolk/shell nanoparticles (YSNs) are promising functional nanomaterials for a variety of applications such as catalysis, delivery, lithium-ion batteries and biosensors due to their tailorability and functionality in both the cores and hollow shells. This feature article provides an overview of advances in this exciting area of YSNs, covering systematic synthesis approaches and key promising applications based on the literature and our own recent work. We present some strategies for the synthesis of YSNs with controllable sizes, compositions, geometries, structures and functionalities. Applications of these new materials in a wide range of potential areas are discussed including nanoreactors, biomedicine and lithium-ion batteries. Promising future directions of this active research field are also highlighted.
Publisher: Wiley
Date: 25-06-2013
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3NR03909A
Abstract: A facile microwave-assisted cation-exchange reaction route has been developed to synthesize a series of MS-Ag (M = Pb, Cd, Zn) heterostructure nanotubes (HSNTs) and MS nanotubes. As a demonstration, the as-prepared PbS-Ag HSNTs exhibit significantly enhanced photocatalytic activity for degradation of Congo red and reduction of Cr(VI).
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C0JM04412A
Publisher: American Chemical Society (ACS)
Date: 18-11-2010
DOI: 10.1021/AM100787W
Abstract: Facile hydrothermal methods have been developed to synthesize large Co3O4 nanocubes, β-Co(OH)2 hexagonal nanodiscs and nanoflowers. S les are thoroughly characterized by field-emission scanning electron microscopy, transmission electron microscopy, X-ray diffraction, Brunauer-Emmett-Teller method, and thermogravimetric analysis. The Co3O4 nanocubes have an average size of about 350 nm with a perfect cubic shape, and the β-Co(OH)2 nanodiscs are uniform hexagonal platelets, whereas the β-Co(OH)2 nanoflowers are assembled from large sheetlike subunits. After thermal annealing in air at a moderate temperature, the as-prepared β-Co(OH)2 s les can be converted into spinel Co3O4 without significant alterations in morphology. We have also investigated the comparative lithium storage properties of these three Co3O4 s les with distinct morphologies. The nanoflower s le shows highly reversible lithium storage capability after 100 charge-discharge cycles.
Publisher: Wiley
Date: 08-06-2012
Abstract: Kept cubic: MnS microboxes, which act as an anode material for lithium ion batteries, are synthesized by a simple H(2)S gas sulfidation approach (TEM images show porous and hollow microcubes and a microbox). The formation of the single crystals is aided by the intrinsic cubic crystal structure and the nearly cubic shape of the MnCO(3) precursor.
Publisher: Wiley
Date: 13-03-2013
Publisher: Wiley
Date: 12-10-2012
Publisher: Royal Society of Chemistry (RSC)
Date: 2011
DOI: 10.1039/C0CC04471G
Abstract: A simple approach was proposed to synthesize three types of ellipsoidal hollow nanostructures whose shells are assembled from anatase TiO(2) nanosheets (NSs) with exposed (001) facets. Among them, ellipsoid Fe(3)O(4)@TiO(2)-NS nanorattles can be readily generated as a magnetically separable photocatalyst with enhanced activity through in situ reduction of the α-Fe(2)O(3) core.
Publisher: American Chemical Society (ACS)
Date: 22-11-2011
DOI: 10.1021/AM201351Z
Abstract: A facile one-pot hydrothermal method has been developed for the preparation of carbon-coated MoO(2) nanocrystals. The annealed MoO(2)-C nanocomposite consists of interconnected MoO(2)@C nanocrystals. When evaluated for lithium storage capabilities, these MoO(2)@C nanocrystals exhibit high specific capacities (~640 mA h g(-1) at 200 mA g(-1) and ~575 mA h g(-1) at 400 mA g(-1)) and excellent cycling stability. In view of the excellent lithium storage properties and the ease in large-scale preparation, the as-synthesized MoO(2)-C nanocomposite might be used as promising anode materials for high-performance lithium-ion batteries.
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C1JM15054E
Publisher: American Chemical Society (ACS)
Date: 16-07-2012
DOI: 10.1021/AM301055Z
Abstract: Uniform one-dimensional (1D) MoS2-C composite nanostructures including nanorods and nanotubes have been produced through a sulfidation reaction in H2S flow using MoOx olyaniline hybrid nanostructures as the precursor. These MoS2-C 1D nanostructures exhibit greatly enhanced electrochemical performance as anode materials for lithium-ion batteries. Typically, stable capacity retention of 776 mA h g(-1) can be achieved after 100 cycles for MoS2-C nanotubes. Even cycled at a high current density of 1000 mA g(-1), these structures can still deliver high capacities of 450-600 mA h g(-1). The unique 1D nanostructure and the extra carbon in the hybrid structure are beneficial to the greatly improved electrochemical performance of these MoS2-C nanocomposites.
Publisher: Royal Society of Chemistry (RSC)
Date: 2012
DOI: 10.1039/C2JM30437F
No related grants have been discovered for Xiong Wen (David) Lou.