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Mechanistic Understanding of the Underlying Energy Storage Mechanism of α-MnO-based Pseudo-Supercapacitors.
Adv Mater
November 2024
Clean Nano Energy Center, State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao, 066004, China.
Manganese dioxide (α-MnO) has attracted significant research interest in supercapacitors recently. However, the reaction mechanism of α-MnO in supercapacitors remains unclear. Therefore, a nano-supercapacitor using Environmental transmission electron microscopy (ETEM) is conducted and investigated the reaction mechanism of α-MnO based on three ionic liquids (ILs).
View Article and Find Full Text PDFFacile Synthesis of Ag-Doped Urchin-like MnO on Carbon Cloth for Supercapacitors.
Materials (Basel)
March 2024
Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials (Ministry of Education), Shandong University, Jinan 250061, China.
Based on MnO/carbon cloth (CC) composite materials, an Ag-doped MnO nanowire, self-assembled, urchin-like structure was synthesized in situ on the surface of CC using a simple method, and a novel and efficient flexible electrode material for supercapacitors was developed. The morphology, structure, elemental distribution, and pore distribution of the material were analyzed using SEM, TEM, XRD, XPS, and BET. The electrochemical performance was tested using cyclic voltammetry (CV) and galvanostatic charge/discharge (GCD).
View Article and Find Full Text PDFMechanical Insights into the Electrochemical Properties of Thornlike Micro-/Nanostructures of PDA@MnO@NMC Composites in Aqueous Zn Ion Batteries.
ACS Appl Mater Interfaces
August 2022
College of Materials Science and Engineering, Hunan University, Hunan joint international laboratory of advanced materials and technology for clean energy, Changsha 410082, P. R. China.
As emerging energy storage devices, aqueous zinc ion batteries (AZIBs) with outstanding advantages of high safety, high energy density, and environmental friendliness have attracted much research interest. Herein, the favorable thornlike MnO micro-/nanostructures (PDA@MnO@NMC) are rationally constructed by the incorporation of both carbon substrates (NMC) and polydopamine (PDA) surface modifications. Ex situ X-ray diffraction and Raman characteristics show the formation of MnOOH and ZnMnO products, corresponding to H and Zn insertions in two discharge platforms.
View Article and Find Full Text PDFEnhancing the Low-Temperature CO Oxidation over CuO-Based α-MnO Nanowire Catalysts.
Nanomaterials (Basel)
June 2022
Collaborative Innovation Center of Atmospheric Environment and Equipment Technology, Jiangsu Key Laboratory of Atmospheric Environment Monitoring and Pollution Control, School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, China.
A series of CuO-based catalysts supported on the α-MnO nanowire were facilely synthesized and employed as the CO oxidation catalysts. The achieved catalysts were systematically characterized by XRD, SEM, EDS-mapping, XPS and H-TPR. The catalytic performances toward CO oxidation had been carefully evaluated over these CuO-based catalysts.
View Article and Find Full Text PDFBinder-Free α-MnO Nanowires on Carbon Cloth as Cathode Material for Zinc-ion Batteries.
Int J Mol Sci
April 2020
Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand.
Recently, rechargeable zinc-ion batteries (ZIBs) have gained a considerable amount of attention due to their high safety, low toxicity, abundance, and low cost. Traditionally, a composite manganese oxide (MnO) and a conductive carbon having a polymeric binder are used as a positive electrode. In general, a binder is employed to bond all materials together and to prevent detachment and dissolution of the active materials.
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