Results 21 to 30 of about 2,403 (114)

Synthesis of porous carbon materials and their cycling properties in lithium-ion batteries

open access: yes上海师范大学学报. 自然科学版, 2023
Based on the development and research status of porous organic polymers and their derived carbon materials in anode materials of lithium-ion batteries, we explored a synthesis method of porous carbon nanospheres with controllable pore size.
TIAN Hanxiao   +6 more
doaj   +1 more source

Selective electrolysis of CO2 to CO on ultrathin In2Se3 nanosheets

open access: yesElectrochemistry Communications, 2019
Electroreduction of CO2 to fuels or valuable chemicals is a promising way to mitigate the greenhouse effect. Herein, ultrathin In2Se3 nanosheets are reported as a robust catalyst for CO2-to-CO conversion with a faradaic efficiency of 89% and a stable ...
Fang Lü   +7 more
doaj   +1 more source

Tailoring nanoporous structures of Ge anodes for stable potassium-ion batteries

open access: yesElectrochemistry Communications, 2019
We present here for the first time the electrochemical behavior of germanium anodes in potassium-ion batteries (KIBs). Nanoporous germanium (np-Ge) samples were fabricated by the chemical-dealloying method using Al as the sacrificial metal. Galvanostatic
Qing Yang   +3 more
doaj   +1 more source

Transition-metal-based electrocatalysts for hydrazine-assisted hydrogen production

open access: yesMaterials Today Advances, 2020
Electrocatalytic water splitting is considered as the next-generation strategy for large-scale ultrapure hydrogen production. However, the high thermodynamic potential (1.23 V vs.
H. Liu, Y. Liu, M. Li, X. Liu, J. Luo
doaj   +1 more source

The Mechanical Effect of MnO2 Layers on Electrochemical Actuation Performance of Nanoporous Gold

open access: yesNanomaterials, 2020
This study investigated the electrochemical actuation behavior of nanoporous material during the capacitive process. The length change of nanoporous gold (npg) was in situ investigated in a liquid environment using the dilatometry technique.
Zhifei Han   +4 more
doaj   +1 more source

Review on porous carbon materials engineered by ZnO templates: Design, synthesis and capacitance performance

open access: yesMaterials & Design, 2021
Supercapacitors (SCs), with favorable features including excellent stability, superior rate performance, and ultrahigh power densities, offer a cost-effective avenue for energy storage. Electrode materials play a decisive role in SCs.
Bing Yan   +6 more
doaj   +1 more source

Defect-rich Zn2SnO4−x/SnO2−x heterostructure for high sulfur utilization and uniform Li+ transport toward stable Li-S full batteries

open access: yesNano Research
Lithium-sulfur (Li-S) batteries depend on eco-friendly sulfur cathodes coupled with lithium metal anode that can attain ultra-high energy density. However, simultaneously inhibiting the shuttling effect, accelerating the redox kinetics and regulating Li+
Junting Li   +4 more
doaj   +1 more source

Improvement of Hydrogen Desorption Characteristics of MgH2 With Core-shell Ni@C Composites

open access: yesMolecules, 2018
Magnesium hydride (MgH2) has become popular to study in hydrogen storage materials research due to its high theoretical capacity and low cost. However, the high hydrogen desorption temperature and enthalpy as well as the depressed kinetics, have severely
Cuihua An, Qibo Deng
doaj   +1 more source

Progress on Synthesis and Applications of Porous Carbon Materials

open access: yesInternational Journal of Electrochemical Science, 2020
Porous carbon materials have been applied in a tremendous amount of fields recently for their various pore structures and larger specific surface area compared to other materials.
Bowen Li, He Xiong, Yang Xiao
doaj   +1 more source

Monitoring the length change of Ni@C composite electrodes during charging/discharging processes

open access: yesElectrochemistry Communications, 2019
The iterative volume change of electrode materials during electrochemical charging/discharging processes could generally result in the performance degradation of electrochemical capacitors. This work investigates the mechanical stability of the electrode
Cuihua An   +3 more
doaj   +1 more source

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