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Work function-activated proton intercalation chemistry assists ultra-stable aqueous zinc ion batteries.
J Colloid Interface Sci
December 2024
College of Chemistry, Jilin University, Changchun 130012, China. Electronic address:
Manganese oxide (MnO) cathodes with a Zn/H co-intercalation mixing mechanism have exhibited great potential for aqueous zinc-ion batteries (AZIBs) owing to their high energy density and optimal electrolyte suitability. However, the strong electrostatic interactions and slow kinetics between the high charge density zinc ions and the fixed lattice in conventional cathodes have hindered the development of AZIBs. Hence, selecting H with a smaller ionic radius and reduced electrostatic repulsion as carriers was a feasible strategy.
View Article and Find Full Text PDFTuning the morphology and textural properties of ZSM-5 additive for co-cracking of waste plastics with vacuum gas oil to light olefins.
Waste Manag
December 2024
Interdisciplinary Research Center for Refining and Advanced Chemicals, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia.
Typical cracking catalysts, called equilibrium catalyst (E-Cat) are ultra-stable Y (USY) zeolite often used with 15% commercial ZSM-5 zeolite additive (ZSM-5(COM)) to boost olefin yield. In this study, similar additive zeolites with different pore sizes and acidic character were synthesized by rapid ageing of precursor solution and used in the co-cracking of low-density polyethylene (LDPE) and heavy vacuum gas oil (HVGO). Three ZSM-5 zeolites additives with Si/Al ratio 25 (ZSM-5(25)), 50 (ZSM-5(50)) and 75 (ZSM-5(75)) were synthesized and combined with E-Cat to form E-Cat/ZSM-5(25), E-Cat/ZSM-5(50) and E-Cat/ZSM-5(75) respectively.
View Article and Find Full Text PDFUltra-stable hollow nanotube conjugated microporous polymer incorporating fluorenyl moieties for Co-capture of PM and CO.
J Hazard Mater
April 2024
College of Chemistry and Chemical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China. Electronic address:
Conjugated microporous polymers have a highly delocalized π-π conjugated porous skeleton connected by covalent bonds, which can combine their excellent stability with high adsorption, in order to be applied to the study of co-capture of harmful particulate matter (PM) and carbon dioxide (CO) under high temperature and high humidity conditions. In this paper, fluorene-based coupled conjugated microporous polymers (D-CMPs) with functionalized hollow nanotubes and abundant microporous structures were proposed. Through mechanism exploration and molecular electrostatic potential (MESP) calculation, the capture efficiency, adsorption capacity and selectivity of PM and CO in the waste gas stream of carbon-based combustion were analyzed.
View Article and Find Full Text PDFUnveiling a robust and high-temperature-stable two-dimensional ZnAl layered double hydroxide nanosheet based flexible triboelectric nanogenerator.
Nanoscale
February 2024
Green Engineered Materials and Additive Manufacturing Division (GEM&AM), CSIR-Advanced Materials and Processes Research Institute, Bhopal, 462026, Madhya Pradesh, India.
Triboelectric nanogenerators have the ability to harvest low- and mid-frequency vibrational energy from the environment; however, achieving stable performance of the nanogenerator device in high-temperature conditions remains challenging. In this work, a flexible and temperature-stable polyvinyl alcohol (PVA)/layered double hydroxides (LDH) nanocomposite-based triboelectric nanogenerator was developed to harvest unexploited vibrational energy for the first time. Crystalline ZnAl LDH nanosheets grown by a hydrothermal route are used to fabricate the high-performance flexible nanogenerator.
View Article and Find Full Text PDFA Novel Closed-Loop Structure for Drag-Free Control Systems with ESKF and LQR.
Sensors (Basel)
July 2023
TianQin Research Center for Gravitational Physics, Sun Yat-sen University, Zhuhai 519082, China.
Space-borne gravitational wave detection satellite confronts many uncertain perturbations, such as solar pressure, dilute atmospheric drag, etc. To realize an ultra-static and ultra-stable inertial benchmark achieved by a test-mass (TM) being free to move inside a spacecraft (S/C), the drag-free control system of S/C requires super high steady-state accuracies and dynamic performances. The Active Disturbance Rejection Control (ADRC) technique has a certain capability in solving problems with common perturbations, while there is still room for optimization in dealing with the complicated drag-free control problem.
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