Plateau-dominated hard carbon with a high rate of performance is challenging to obtain, and the in-depth mechanism of pore structure on the diffusion of sodium ions remains unclear. In this study, a facile liquid-phase molecular reconstruction strategy is proposed to regulate the orientation of the β-cyclodextrin molecules and prepare spherical hard carbon with continuous and ordered pore channels. Through detailed characterization, this approach is confirmed to optimize the accumulation of Na in the dispersion region, thus improving the plateau kinetics and enhancing the utilization of closed pores. The as-obtained β-cyclodextrin-derived spherical hard carbon has a much greater specific surface area (129 m g) than the pristine sample (2.91 m g) but a similar initial Coulombic efficiency. Additionally, the plateau region still exists when the current density is at 30 C (7.5 A g), contributing to a high capacity of 179 mAh g. This study provides a meaningful promotion to kinetics of hard carbon at the low-voltage region.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acs.nanolett.4c04569 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
A novel hierarchical porous biochar based on ZIF-8 volatile hard template with high-efficiency electrochemical sensing performance for trace determination of Ponceau 4R.
Mikrochim Acta
January 2025
Jiangxi Provincial Key Laboratory of Improved Variety Breeding and Efficient Utilization of Native Tree Species 2024SSY04093, College of Forestry, East China Woody Fragrance and Flavor Engineering Research Center of NF&GA, Jiangxi Agricultural University, Nanchang, 330045, People's Republic of China.
A convenient method is proposed using a heat-treatable volatile template to prepare hierarchical porous biochar (HPB). Litsea cubeba leaves and ZIF-8 served as carbon source and volatile hard template, respectively. The good compatibility between ZIF-8 and biomass facilitated their uniform dispersion, and the thermal decomposition of ZIF-8 created abundant pores in the HPB.
View Article and Find Full Text PDFSodium Ion Diffusion Behavior in Multiple Open/Closed Pore Ratios of Novel β-Cyclodextrin-Derived Hard Carbon Anode Materials.
Nano Lett
January 2025
Advanced Energy Storage Technology and Equipment Research Institute, Ningbo University, Ningbo, Zhejiang 315211, China.
Plateau-dominated hard carbon with a high rate of performance is challenging to obtain, and the in-depth mechanism of pore structure on the diffusion of sodium ions remains unclear. In this study, a facile liquid-phase molecular reconstruction strategy is proposed to regulate the orientation of the β-cyclodextrin molecules and prepare spherical hard carbon with continuous and ordered pore channels. Through detailed characterization, this approach is confirmed to optimize the accumulation of Na in the dispersion region, thus improving the plateau kinetics and enhancing the utilization of closed pores.
View Article and Find Full Text PDFEffect of pre-treatment conditions on the electrochemical performance of hard carbon derived from bio-waste.
RSC Adv
January 2025
Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University Astana Kazakhstan
Sodium-ion batteries (SIBs) offer several advantages over traditional lithium-ion batteries, including a more uniform sodium distribution, lower-cost materials, and safer transportation options. A promising development in SIBs is the use of hard carbons as anode materials due to their low insertion voltage and larger interlayer spacing, which improve sodium-ion insertion. Traditionally, hard carbons are made from costly carbon sources, but recent advancements have focussed on using abundant bio-waste, like coffee grounds.
View Article and Find Full Text PDFHerbal Waste from Filter-Tea Production as Eco-Friendly Ash for Sustainable Natural Rubber Composites.
Materials (Basel)
January 2025
Faculty of Technology Novi Sad, University of Novi Sad, Bulevar Cara Lazara 1, 21000 Novi Sad, Serbia.
Herbal dust, a waste byproduct from filter-tea production, was annealed to form ash that can be incorporated into natural rubber as an eco-friendly filler. Three types of herbal dust ash (HDA), green tea, hibiscus, and lemon balm, were added at two different contents, 2.5 and 5 phr, into the rubber compound, while the content of carbon black, as a filler, was maintained at 50 phr in all samples.
View Article and Find Full Text PDFRevisiting Intercalation Anode Materials for Potassium-Ion Batteries.
Materials (Basel)
January 2025
Helmholtz Institute Ulm (HIU), Helmholtzstraße 11, 89081 Ulm, Germany.
Potassium-ion batteries (KIBs) have attracted significant attention in recent years as a result of the urgent necessity to develop sustainable, low-cost batteries based on non-critical raw materials that are competitive with market-available lithium-ion batteries. KIBs are excellent candidates, as they offer the possibility of providing high power and energy densities due to their faster K diffusion and very close reduction potential compared with Li/Li. However, research on KIBs is still in its infancy, and hence, more investigation is required both at the materials level and at the device level.
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!