Nadeem HUSSAIN Researcher PhD Shenzhen University
Co 0.85 Se hollow spheres constructed by 2D mesoporous ultrathin nanosheets with high specific surface area (93.2 m 2 g-1) were synthesized first time via a one-step and cost effective solvothermal
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Self-templated chemically stable hollow spherical covalent
Apr 10 2015 · However the cross-section analysis revealed that the diameters of the hollow spheres are in the range of 0.5–3 μm and the height was measured in
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Nanostructure selenium compounds as pseudocapacitive
The results show that the synthesized Co 0.85 Se electrode material consisted of Co 2 Co 3 and Se 2 which is consistent with the formula Co 0.85 Se. Furthermore the Co 0.85 Se electrode material is synthesized by element mapping images of cobalt and selenium in figure 5d in which it is obvious that the elemental distributions are very
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McMaster-Carr
McMaster-Carr is the complete source for your plant with over 700 000 products. 98 of products ordered ship from stock and deliver same or next day.
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Single platinum atoms embedded in nanoporous cobalt
Apr 15 2019 · Our results reveal a considerably larger C dl of Pt/np-Co 0.85 Se (57.2 mF cm −2) compared with np-Co 0.85 Se (34.1 mF cm −2) implying more accessible active sites constructed on Pt/np-Co 0
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Single platinum atoms embedded in nanoporous cobalt
Apr 15 2019 · Our results reveal a considerably larger C dl of Pt/np-Co 0.85 Se (57.2 mF cm −2) compared with np-Co 0.85 Se (34.1 mF cm −2) implying more accessible active sites constructed on Pt/np-Co 0
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Organization of Artificial Superlattices Utilizing
A superlattice film composed of two types of ferromagnetic nanosheets Ti 0.8 Co 0.2 O 2 0.4− and Ti 0.6 Fe 0.4 O 2 0.4− could greatly enhance the magneto-optical response . This review discusses the latest developments in constructing artificial superlattices by employing soft-chemical nanoarchitectonics based on 2D nanosheets.
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Self-templated chemically stable hollow spherical covalent
Apr 10 2015 · However the cross-section analysis revealed that the diameters of the hollow spheres are in the range of 0.5–3 μm and the height was measured in
Get PriceConstruction of hierarchical nickel cobalt selenide
Aug 10 2018 · The as-obtained product is composed of hierarchical spheres constructed by numerous ultrathin nanosheets. SEM image of a broken hierarchical sphere reveals the unique hollow inner (insert in Fig. 1c). Furthermore the NiCo 2 O 4 MHSs and hierarchical (Ni 0.33 Co 0.67)Se 2 CHSs were further identified by energy-dispersive X-ray spectroscopy (EDS
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Confining Ultrathin 2D Superlattices in Mesoporous Hollow
Aug 11 2020 · Herein a sheet‐in‐sphere nanoconfiguration of 2D titania–carbon superlattices vertically aligned inside of mesoporous TiO 2 C hollow nanospheres is constructed. In such a design the ultrathin 2D superlattices consist of ordered alternating monolayers of titania and carbon enabling interpenetrating pathways for rapid transport of
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Co 0.85 Se hollow spheres constructed of ultrathin 2D
Oct 26 2019 · The as-synthesized hollow spheres of Co 0.85 Se that are constructed by 2D mesoporous ultrathin nanosheets exhibit inspiring electrochemical performance for supercapacitor presenting maximum energy density at high power density (54.66 Wh·kg −1 at 1.6 kW·kg −1) and long cycle stability (88 retention after 8 000 cycles).
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PulicationClean Energy and Nanomaterials Group
Topotactic Transformation Synthesis of 2D Ultrathin GeS2 Nanosheets toward High-Rate and High-Energy-Density Sodium-Ion Half/Full Batteries C. Li B New Nanoconfined Galvanic Replacement Synthesis of Hollow Sb C Yolk–Shell Spheres Constituting a Stable Anode for High-Rate Li/Na-Ion Batteries J. Liu L. Yu C. Wu Y. Wen K. Yin F. Chiang
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Co0.85Se hollow spheres constructed of ultrathin 2D mesoporous nanosheets as a novel bifunctional-electrode for supercapacitor and water splitting Nadeem Hussain Fangfang Wu Liqiang Xu Yitai
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Formation of Uniform Fe3O4 Hollow Spheres Organized by
Hierarchical Fe 3 O 4 hollow spheres constructed by nanosheets are obtained from solvothermally synthesized Fe–glycerate hollow spheres. With the unique structural features these hierarchical Fe 3 O 4 hollow spheres exhibit excellent electrochemical lithium‐storage performance.
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Pseudocapacitive materials for electrochemical capacitors
Shen and Yu reported on NiCo 2 S 4 ball-in-ball hollow spheres which deliver a specific capacitance of 1036 F/g at a current density of 1.0 A/g (Fig. 5a). An asymmetric supercapacitor based on these ball-in-ball structures shows long-term cycling performance with a high energy density of 42.3 Wh/kg at a power density of 476 W/kg 35 (Fig. 5b
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RSCNanoscale latest articles
Meng Cao Hanqing Pan Wanshu Luo Qingqing Wang Yinglan Ma Ying Wang Chao Wang A yolk-double-shell polyhedron assembled using Co 0.85 Se NC and ZnSe NC nanoparticles is synthesized. The complex composition and unique structure of this novel electrode result in an impressive long life of 3000 cycles at 5 A g −1 .
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Delocalized electron effect on single metal sites in
The Co 2p 3/2 binding energy in ultrathin DTBBQ-CMP nanosheets is 781.0 eV higher than 780.7 eV for BDA-CMP aggregates (fig. S18) (26 27) but no signal for trivalent cobalt ion is found. Both XANES and XPS data are in good agreement with the calculation result (fig. S1) disclosing that the presence of electron-withdrawing alkene groups in
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3D Flower-Like Hierarchitectures Constructed by SnS/SnS2
Sn chalcogenides including SnS Sn 2 S 3 and SnS 2 have been extensively studied as anode materials for lithium batteries. In order to obtain one kind of high capacity long cycle life lithium batteries anode materials three-dimensional (3D) flower-like hierarchitectures constructed by SnS/SnS 2 > heterostructure nanosheets with thickness of #x7e20 #x2009nm have been synthesized via a
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RSCNanoscale latest articles
Meng Cao Hanqing Pan Wanshu Luo Qingqing Wang Yinglan Ma Ying Wang Chao Wang A yolk-double-shell polyhedron assembled using Co 0.85 Se NC and ZnSe NC nanoparticles is synthesized. The complex composition and unique structure of this novel electrode result in an impressive long life of 3000 cycles at 5 A g −1 .
Get PriceGraphene related two-dimensional crystals and hybrid
### Background The integration of graphene in photovoltaic modules fuel cells batteries supercapacitors and devices for hydrogen generation offers opportunities to tackle challenges driven by the increasing global energy demand. Graphene s two-dimensional (2D) nature leads to a theoretical surface-to-mass ratio of 2600 m2/g which combined with its high electrical conductivity and
Get PriceFrontiers Recent Advances of Bimetallic Sulfide Anodes
In order to solve the problems of low energy density and poor cycle life when used as an anode in SIBs MOF precursors were utilized to fabricate in-situ NC embellished with BMS hollow spheres nanomaterials. They prepared (Co 0.5 Ni 0.5) 9 S 8 solid-solution combined with in-situ NC donated as (Co 0.5 Ni 0.5) 9 S 8 /NC which exhibited a
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CapacitanceWikipedia
Capacitance is the ratio of the amount of electric charge stored on a conductor to a difference in electric potential.There are two closely related notions of capacitance self capacitance and mutual capacitance. 237–238 Any object that can be electrically charged exhibits self capacitance this case the electric potential difference is measured between the object and ground.
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Using flow technologies to direct the synthesis and
Jan 05 2017 · In the pursuit of materials with structure-related function directing the assembly of materials is paramount. The resultant structure can be controlled by ordering of reactants spatial confinement and control over the reaction/crystallisation times and stoichiometries. These conditions can be administered through the use of flow technologies as evidenced by the growing widespread
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Unraveling the Reactivity and Selectivity of Atomically
Oct 01 2019 · Particularly as shown in Figure 5c NiSAs/PTF showed best activity for CO 2 to CO with high FE over 94 in the wide potential ranges from −0.6 to −1.2 V and achieved a maximum FE of 98 at −0.80 V with a high CO partial current density of 16.28 mA cm −2 (Figure 5b).
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