Sodium-sulfur batteries operating at ambient temperature are being extensively studied because of the high theoretical capacity and abundant resources, yet the long-chain polysulfides' shuttle effect causes poor cycling performance of Na-S batteries. We report an annealing/etching method to converse low-cost wheat bran to a 3D honeycomb-like carbon with abundant micropores (WBMC), which is smaller than S molecular size (∼0.7 nm). Thus, the microporous structure could only fill small molecular sulfur (S). The micropores made sulfur a one-step reaction without the shuttle effect due to the formed short-chain polysulfides being insoluble. The WBMC@S exhibits an excellent initial capacity (1413 mAh g) at 0.2 C, outstanding cycling performance (822 mAh g after 100 cycles at 0.2 C), and high rate performance (483 mAh g at 3.0 C). The electrochemical performance proves that the steric confinement of micropores effectively terminates the shuttle effect.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/acsami.2c13862 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Interfacial hydrogen bonds induced by porous FeCr bimetallic atomic sites for efficient oxygen reduction reaction.
J Colloid Interface Sci
December 2024
State Key Laboratory of Catalysis-Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China. Electronic address:
Interfacial hydrogen bonds are pivotal in enhancing proton activity and accelerating the kinetics of proton-coupled electron transfer during electrocatalytic oxygen reduction reaction (ORR). Here we propose a novel FeCr bimetallic atomic sites catalyst supported on a honeycomb-like porous carbon layer, designed to optimize the microenvironment for efficient electrocatalytic ORR through the induction of interfacial hydrogen bonds. Characterizations, including X-ray absorption spectroscopy and in situ infrared spectroscopy, disclose the rearrangement of delocalized electrons due to the formation of FeCr sites, which facilitates the dissociation of interfacial water molecules and the subsequent formation of hydrogen bonds.
View Article and Find Full Text PDFEnhancing the sustainability of rubber materials: Dual benefits of wet mixing technology and recycled rubber's honeycomb reinforcement structure.
Waste Manag
December 2024
Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, School of Polymer Science and Engineering, Qingdao University of Science and Technology, Qingdao 266042, PR China; Qingdao Automotive Research Institute, Jilin University, Qingdao 266042, PR China. Electronic address:
The world's three leading tire manufacturers have proposed specific timelines for using recycled materials. For instance, Michelin targets an increase in the proportion of sustainable materials in tires to 40 % by 2030 and aims to produce 100 % of its tires from bio-based, renewable, or recyclable materials as of 2050. In such a context, this study introduced wet mixing technology to apply recycled rubber (RR) in highly wear-resistant tire tread compounds.
View Article and Find Full Text PDFOptimizing Reversible Phase-Transformation of FeS Anode via Atomic-Interface Engineering Toward Fast-Charging Sodium Storage: Theoretical Predication and Experimental Validation.
Adv Sci (Weinh)
November 2024
College of Chemistry, Chemical Engineering and Materials Science, Shandong Normal University, Jinan, Shandong, 250014, China.
Sodium-storage performance of pyrite FeS is greatly improved by constructing various FeS-based nanostructures to optimize its ion-transport kinetics and structural stability. However, less attention has been paid to rapid capacity degradation and electrode failure caused by the irreversible phase-transition of intermediate NaFeS to FeS and polysulfides dissolution upon cycling. Under the guidance of theoretical calculations, coupling FeS nanoparticles with honeycomb-like nitrogen-doped carbon (NC) nanosheet supported single-atom manganese (SAs Mn) catalyst (FeS/SAs Mn@NC) via atomic-interface engineering is proposed to address above challenge.
View Article and Find Full Text PDFBamboo-Based Carbon/Co/CoO Heterojunction Structures Based on a Multi-Layer Periodic Matrix Array Can Be Used for Efficient Electromagnetic Attenuation.
Materials (Basel)
October 2024
Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China.
Article Synopsis
- The increasing prevalence of wireless communication and electronic devices poses significant risks from electromagnetic radiation, prompting the need for protective materials.
- Researchers developed a green biomass carbon-based composite from bamboo, specifically designed to absorb electromagnetic waves by creating a specialized heterojunction interface that enhances polarization and energy loss.
- The resulting material demonstrates impressive absorption capabilities, with effective bandwidth of 5.1 GHz and a reflection loss of -54.7 dB, as well as significant radar cross-section reduction, indicating its potential for various applications.
Plasmonic Au-NPs photodecorated on NiCoLDH nanosheets as a flexible SERS sensor for the real-time detection of fipronil.
J Hazard Mater
December 2024
Department of Chemical Engineering, Ming Chi University of Technology, New Taipei City 243303, Taiwan; R&D Center of Biochemical Engineering Technology, Ming Chi University of Technology, New Taipei City 243303, Taiwan. Electronic address:
Rapid extraction and detection of probe molecules from curved surfaces is critical for on-site and real-time detection. In this study, a flexible platform was developed using carbon cloth (CC) to create honeycomb-like nickel cobalt layered double hydroxides (NiCoLDH) nanosheets via a simple electrodeposition technique, which were then decorated with gold nanoparticles (Au-NPs) via photodeposition process. The Au-NPs/NiCoLDH/CC was designed as a surface-enhanced Raman scattering (SERS) substrate for detecting the broad-spectrum insecticide, Fipronil (FP).
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!