Journal ArticleDOI
Preparation of Manganese Oxide Thin Films by Electrolysis/Chemical Deposition and Electrochromism
TLDR
In this article, X-ray diffraction (XRD) of the thin films revealed that the crystal structure formed in the films by EL/C deposition is assigned to γ-Mn 2 O 3 and/or Mn 3 O 3.Abstract:
Manganese oxide (MnO 3 ) thin films were deposited onto transparent and conductive tin oxide-coated glass substrates by electrochemical deposition (at 1.2 V vs. Ag/AgCl) and subsequent chemical [electrolysis/chemical (EL/C)] processing in a manganese ammine complex solution at pH 8. Characterization by X-ray diffraction (XRD) of the films revealed that the crystal structure formed in the films by EL/C deposition is assigned to γ-Mn 2 O 3 and/or Mn 3 O 3 . X-ray photoelectron spectroscopy (XPS) was also performed to focus on exchange splitting effect shown in Mn 3s spectra and peak analyses of O Is spectra of the films. From electrochemical, quartz crystal microbalance, XRD, XPS, and atomic force microseope studies, a mechanism of film growth was illustrated, featuring time course of rest potential during chemical process. The XPS data also suggested that the electrochromic behavior, turning brown and light yellow by the anodic and cathodic polarization in potassium borate buffer solution at pH 10. originates from a transformation between two oxygen groups in hydroxide (Mn-O-H) and oxide (Mn-O-Mn) accompanied by the change in valence of Mn. The repeated EC switching performance of the films was also assayed.read more
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Charge Storage Mechanism of MnO2 Electrode Used in Aqueous Electrochemical Capacitor
TL;DR: The charge storage mechanism in MnO2 electrode, used in aqueous electrolyte, was investigated by cyclic voltammetry and X-ray photoelectron spectroscopy as discussed by the authors.
Journal ArticleDOI
Design and Synthesis of Hierarchical MnO2 Nanospheres/Carbon Nanotubes/Conducting Polymer Ternary Composite for High Performance Electrochemical Electrodes
TL;DR: The results demonstrated that MnO(2) is effectively utilized with assistance of other components (fFWNTs and poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) in the electrode, and such ternary composite is very promising for the next generation high performance electrochemical supercapacitors.
Journal ArticleDOI
Graphene Scroll-Coated α-MnO2 Nanowires as High-Performance Cathode Materials for Aqueous Zn-Ion Battery.
Buke Wu,Guobin Zhang,Mengyu Yan,Mengyu Yan,Tengfei Xiong,Pan He,Liang He,Liang He,Xu Xu,Liqiang Mai +9 more
TL;DR: A two-step intercalation mechanism that Zn ions first insert into the layers and then the tunnels of MnO2 framework is proved by in situ X-ray diffraction, galvanostatic intermittent titration technique, andX-ray photoelectron spectroscopy characterizations.
Journal ArticleDOI
Application of electrophoretic and electrolytic deposition techniques in ceramics processing
TL;DR: Electrodeposition is gaining increasing interest as a ceramic processing technique for a variety of technical applications as discussed by the authors, and major advances in the areas of electrophoretic deposition (EPD) and electrolytic deposition (ELD) achieved in the last 24 months include the fabrication of: electrodes and films for solid oxide fuel cells, fibre-reinforced and graded ceramic composites, nanostructured materials as well as advanced films and coatings for electronic, biomedical, optical, catalytic and electrochemical applications.
Journal ArticleDOI
Towards Textile Energy Storage from Cotton T‐Shirts
Lihong Bao,Xiaodong Li +1 more
TL;DR: A simple chemical activation route is developed to convert insulating cotton T-shirt textiles into highly conductive and flexible activated carbon textiles for energy-storage applications that show superior electrochemical performances.
References
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Journal ArticleDOI
Verwendung von Schwingquarzen zur Wägung dünner Schichten und zur Mikrowägung
TL;DR: In this paper, eigenfrequenz der Platte infolge Vergroserung der schwingenden Masse is vermessen, so das eine empirische Eichung bei der Schichtwagung mit Schwingquarzen entfallt.
Book
Atlas of Electrochemical Equilibria in Aqueous Solutions
TL;DR: The Atlas of Electrochemical Equilibria in Aqueous solutions as discussed by the authors is the most complete and complete work on aqueous solvents, which includes a detailed description of the properties of the solvers.
Journal ArticleDOI
Use of quartz vibration for weighing thin films on a microbalance
G. Sauerbrey,F. Sauerbrey +1 more
Journal Article
The use of quarts oscillators for weighing thin layers and for microweighing
G. Sauerbrey,G.Z. Sauerbrey +1 more
Journal ArticleDOI
Use of X‐Ray Photoelectron Spectroscopy to Study Bonding in Cr, Mn, Fe, and Co Compounds
TL;DR: In this article, the photoelectron spectra of some 40 transition metal compounds have been measured using AlKα(1487 eV) and MgKα (1254 eV), and the chemical shifts of the core electrons and related these results to a calculated charge based on Pauling's electronegativities.