AI Article Synopsis
- Three-dimensional porous carbon-sheet microspheres (PCSMs) are created by coating zinc carbonate microspheres with coal tar pitch and then using a carbonization process with KOH activation.
- The resulting PCSMs feature a unique morphology with petal-like carbon nanosheets, offering a high surface area and a variety of pore sizes.
- As supercapacitor electrodes, they demonstrate impressive performance, achieving a specific capacitance of 313 F/g and maintaining 81.9% capacitance retention at higher current densities, alongside a noteworthy energy density of 18.79 Wh/kg.
Article Abstract
Three-dimension (3D) porous carbon-sheet microspheres (PCSMs) are prepared through coating coal tar pitch on basic zinc carbonate microspheres followed by in situ ZnO template carbonization and KOH activation. The as-prepared PCSMs show microsphere morphology composed of petal-like carbon nanosheets, which have large specific area (1359.88-2059.43 m g) and multiscale pores (mainly micropores and mesopores). As the supercapacitor electrodes, the 3D PCSMs present a good electrochemical performance with a large specific capacitance of 313 F g at 1 A g and high rate capability of 81.9% capacitance retention when increasing the current density up to 50 A g in a three-electrode system. In addition, the energy density can reach up to 18.79 Wh kg at a high power density of 878.4 W kg for PCSMs-0.2a symmetrical supercapcitor in 1 M NaSO electrolyte.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jcis.2021.06.037 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The Application of Porous Carbon Derived from Furfural Residue as the Electrode Material in Supercapacitors.
Polymers (Basel)
December 2024
Department of New Energy Science and Engineering, School of Energy and Power Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
Resource use is crucial for the sustainable growth of energy and green low-carbon applications since the improper handling of biomass waste would have a detrimental effect on the environment. This paper used nano-ZnO and ammonium persulfate ((NH)SO, APS) as a template agent and heteroatom dopant, respectively. Using a one-step carbonization process in an inert atmosphere, the biomass waste furfural residue (FR) was converted into porous carbon (PC), which was applied to the supercapacitor electrode.
View Article and Find Full Text PDF3D-printed microstructured alginate scaffolds for neural tissue engineering.
Trends Biotechnol
December 2024
Max Planck Institute of Microstructure Physics, Weinberg 2, Halle, 06120, Germany; Max Planck-University of Toronto Centre for Neural Science and Technology, Toronto, Canada; Department of Electrical and Computer Engineering, University of Toronto, 10 King's College Road, Toronto, Ontario, Canada.
Alginate (Alg) is a versatile biopolymer for scaffold engineering and a bioink component widely used for direct cell printing. However, due to a lack of intrinsic cell-binding sites, Alg must be functionalized for cellular adhesion when used as a scaffold. Moreover, direct cell-laden ink 3D printing requires tedious disinfection procedures and cell viability is compromised by shear stress.
View Article and Find Full Text PDFHighly Sensitive Ethylene Glycol Gas Sensor Based on MIL-68(In)@ZIF-8 Derivative.
ACS Sens
December 2024
School of Physics and Electronic Information, Yan'an University, Yan'an 716000, China.
Article Synopsis
- Ethylene glycol is a crucial industrial compound that poses environmental and health risks, necessitating effective sensing materials for monitoring its presence.
- The study presents a novel method to create InO@ZnO using MIL-68(In)@ZIF-8 as a template, resulting in a sensor with enhanced sensitivity to ethylene glycol.
- Results indicate that InO@ZnO demonstrates significant sensitivity with a response value of 200.12 (20 ppm), along with quick response/recovery times, attributed primarily to the beneficial effects of the heterojunction structure.
Crystallization-driven formation of cluster assemblies on surface for super-hydrophobic poly (L-lactic acid)/ZnO composite membrane.
Int J Biol Macromol
December 2024
Shandong Laboratory of Advanced Materials and Green Manufacturing at Yantai, Yantai 264006, China; Yantai Zhongke Research Institute of Advanced Materials and Green Chemical Engineering, Yantai 264006, China; State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China. Electronic address:
The poly(L-lactic acid) (PLLA)/ZnO composite membrane with cluster assemblies microstructure was constructed by a combination of non-solvent induced phase separation (NIPS) and the Breath-Figure method. In this novel method, the controllable diffusion rate between solvent and non-solvent was introduced to the system by adjusting the non-solvent solubility parameters. The humidity was adjusted to control non-solvent solubility parameters in the Breath-Figure method, which avoids the instantaneous phase separation induced by direct coagulation of water droplets.
View Article and Find Full Text PDFPorous and Homogeneous Nanoheterojunction-Accumulating PdO@ZnO Structure for Exhaled Breath Ammonia Sensing.
Inorg Chem
November 2024
Department of Gastroenterology, Shanxi Bethune Hospital, Shanxi Academy of Medical Sciences, Tongji Shanxi Hospital, Third Hospital of Shanxi Medical University, Taiyuan 030024, Shanxi, P. R. China.
The functional gas sensor device plays a pivotal role in intelligent medical treatment, among which metal oxide semiconductors are widely studied because of their inexpensiveness and ease of fabrication. However, the metal oxide sensors present a significant challenge in detecting NH at ppm levels within complex exhaled gases. Herein, the ZnO/PdO- series were prepared by in situ loading palladium particles and calcining using nano-ZIF-8 as a precursor, which not only provided more transport path for ammonia adsorption but also achieved homogeneous nanoheterojunction accumulation structure.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!