Results 31 to 40 of about 177 (113)

Monodisperse Hierarchical N-Doped Carbon Microspheres with Uniform Pores as a Cathode Host for Advanced K–Se Batteries

open access: yesBatteries
K–Se batteries offer high energy density and cost-effectiveness, making them promising candidates for energy storage systems. However, their practical applications are hindered by Se aggregation, sluggish ion diffusion, and significant volumetric ...
Hyun-Jin Kim   +2 more
doaj   +1 more source

Coronavirus-like Core–Shell-Structured Co@C for Hydrogen Evolution via Hydrolysis of Sodium Borohydride

open access: yesMolecules, 2023
Constructing a reliable and robust cobalt-based catalyst for hydrogen evolution via hydrolysis of sodium borohydride is appealing but challenging due to the deactivation caused by the metal leaching and re-oxidization of metallic cobalt.
Shuyi Su, Kailei Chen, Xu Yang, Dai Dang
doaj   +1 more source

Surface functionalization of porous chitosan microsphere with silver nanoparticle and carbon dot

open access: yesMaterials Research Express, 2020
Porous microspheres have enormous specific surface area due to the presence of micropores. This makes them suitable for all applications that involves surface adsorption e.g.
Debabrata Ghosh Dastidar   +5 more
doaj   +1 more source

Rambutan‐like hierarchically porous carbon microsphere as electrode material for high‐performance supercapacitors

open access: yesCarbon Energy, 2021
Used as high‐performance electrodes, both structural and compositional alterations of carbon materials play very important roles in energy conversion/storage devices.
Chunfeng Shao   +8 more
doaj   +1 more source

Advances in Research and Application of Bio-based Microsphere Adsorbents in Blood Adsorption

open access: yesZhongguo yiliao qixie zazhi
One of the key components of adsorbents for blood purification is the microsphere adsorbent. Microsphere adsorbents should meet the following requirements: stable physical and chemical structures, easy for functional modification to endow the adsorbents ...
Xinran GUO   +5 more
doaj   +1 more source

Carbon nanoparticle-entrapped macroporous Mn3O4 microsphere anodes with improved cycling stability for Li-ion batteries

open access: yesScientific Reports, 2022
Manganese oxide (Mn3O4) has garnered substantial attention as a low-cost, environment-friendly anode material. It undergoes a conversion reaction involving the formation of Li2O and metallic Mn to provide high-energy Li-ion batteries.
Takahiro Kozawa   +3 more
doaj   +1 more source

Preparation and Properties of Mesoporous Carbon Composite as Negative Electrode Materials

open access: yesInternational Journal of Electrochemical Science, 2019
Using sodium lignosulfonate as carbon source, microspheres were prepared by ultrasound. Molybdenum disulfide was synthesized directly by hydrothermal method and grown on the surface of lignin microspheres.
Zhengping Zhao   +4 more
doaj   +1 more source

Fluorinated polymer-derived microporous carbon spheres for CFx cathodes with high energy density

open access: yesGiant
Fluorinated carbon (CFx) compounds have extensive applications in lithium primary battery cathodes owing to their high energy density. In this investigation, a novel CFx compound offering superior electrochemical properties was synthesized via a low ...
Ziyue Zhao   +4 more
doaj   +1 more source

Tailoring Carbon Nanotube Microsphere Architectures with Controlled Porosity [PDF]

open access: yesAdvanced Functional Materials, 2019
AbstractNanomaterials are at the core of fuel cell electrodes, providing high‐area catalytic, proton, and electron conducting surfaces, traditionally on carbon black supports. Other carbons, e.g., carbon nanotubes (CNTs) and graphene are less prone to oxidation; however, their handling is not trivial due to health risks associated with their size ...
Zishuai Zhang   +6 more
openaire   +3 more sources

Characterization of carbon microspheres grown by HVPE

open access: yesJournal of the Korean Crystal Growth and Crystal Technology, 2015
The carbon microspheres of a core-shell type were grown by the method of mixed-source hydride vapor phase epitaxy (HVPE). The surface and the cross section of the carbon microsphere grown by a new method were observed by scanning electron microscope (SEM).
Chanmi Lee   +12 more
openaire   +2 more sources

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