In-situ hydrothermal synthesis of three-dimensional MnO2–CNT nanocomposites and their electrochemical properties

2010 ◽  
Vol 499 (2) ◽  
pp. 259-264 ◽  
Author(s):  
Fei Teng ◽  
Sunand Santhanagopalan ◽  
Ying Wang ◽  
Dennis Desheng Meng
Keyword(s):  
Hydrothermal Synthesis ◽  
Electrochemical Properties ◽  
Three Dimensional

Three-Dimensional Precursor-Derived Synthesis of Co3O4 Towards High Electrochemical Performance

2019 ◽  
Vol 11 (10) ◽  
pp. 1375-1386
Author(s):  
Ruili Zhang ◽  
Yuntao Yang ◽  
Ping Yang
Keyword(s):  
Hydrothermal Synthesis ◽  
Electrochemical Performance ◽  
Electrochemical Properties ◽  
Growth Mechanism ◽  
Three Dimensional ◽  
Solution Concentration ◽  
Cycling Performance ◽  
Electrochemical Investigation ◽  
Experimental Conditions ◽  
Different Shapes

Three-dimensional (3D) cobalt oxide (Co3O4) flowers with different shapes were prepared by a facile hydrothermal synthesis. The morphology of Co3O4 precursors has adjusted obviously from acicular shapes to acicular-sheet-like flowers and then to sheet-like flowers by changing reaction temperature and solution concentration. After annealing, as-prepared precursors were converted into 3D flower-like Co3O4 samples and their morphology and sizes were well preserved. The effect of experimental conditions on growth of Co3O4 precursors was explored and the growth mechanism was proposed. Moreover, the electrochemical properties of various Co3O4 with different shapes were tested. The result of electrochemical investigation indicates that 3D flower-like Co3O4 assembled by sheets exhibited high capacitance and excellent cycling performance.

Ruthenium@mesoporous graphene-like carbon: a novel three-dimensional cathode catalyst for lithium–oxygen batteries

2016 ◽  
Vol 4 (20) ◽  
pp. 7788-7794 ◽  
Author(s):  
Xiaodong Lin ◽  
Yong Cao ◽  
Senrong Cai ◽  
Jingmin Fan ◽  
Yijuan Li ◽  
...  
Keyword(s):  
Electrochemical Properties ◽  
Three Dimensional ◽  
Carbon Composite ◽  
Cathode Catalyst ◽  
Hard Template ◽  
Growth Method ◽  
Lithium Oxygen Batteries

A 3D Ru@mesoporous graphene-like carbon composite was synthesized by combining a hard template with in situ growth method, which showed excellent electrochemical properties as a cathode for lithium–oxygen batteries.

Hydrothermal synthesis of a MnOOH/three-dimensional reduced graphene oxide composite and its electrochemical properties for supercapacitors

2015 ◽  
Vol 3 (42) ◽  
pp. 20944-20951 ◽  
Author(s):  
Shumin Sun ◽  
Shen Wang ◽  
Tongchi Xia ◽  
Xiaofeng Li ◽  
Qingxian Jin ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Hydrothermal Synthesis ◽  
Electrochemical Performance ◽  
Electrochemical Properties ◽  
Reduced Graphene Oxide ◽  
Three Dimensional ◽  
Oxide Composite ◽  
Excellent Electrochemical Performance ◽  
Reduced Graphene

MnOOH/3D-rGO shows excellent electrochemical performance because of the 3D interpenetrating microstructure of rGO and the nanoneedle structure of MnOOH.

Hydrothermal Synthesis of CoSb2O4: In Situ Powder X-ray Diffraction, Crystal Structure, and Electrochemical Properties

2016 ◽  
Vol 16 (2) ◽  
pp. 834-841 ◽  
Author(s):  
Peter Nørby ◽  
Martin Roelsgaard ◽  
Martin Søndergaard ◽  
Bo B. Iversen
Keyword(s):  
Crystal Structure ◽  
Hydrothermal Synthesis ◽  
Electrochemical Properties ◽  
X Ray Diffraction ◽  
X Ray

Correlated Studies of Cellular Interactions Using TEM, Freeze Etching, and SEM

1974 ◽  
Vol 32 ◽  
pp. 320-321
Author(s):  
J. P. Revel
Keyword(s):  
Developmental Stages ◽  
Three Dimensional ◽  
Cell Movement ◽  
Cellular Interactions ◽  
Serial Sections ◽  
Cell Sheets ◽  
Freeze Etching ◽  
Early Developmental

Movement of individual cells or of cell sheets and complex patterns of folding play a prominent role in the early developmental stages of the embryo. Our understanding of these processes is based on three- dimensional reconstructions laboriously prepared from serial sections, and from autoradiographic and other studies. Many concepts have also evolved from extrapolation of investigations of cell movement carried out in vitro. The scanning electron microscope now allows us to examine some of these events in situ. It is possible to prepare dissections of embryos and even of tissues of adult animals which reveal existing relationships between various structures more readily than used to be possible vithout an SEM.

In vitro and in vivo polysaccharides assembly: ultrastructural and cytochemical study of growing plant cell wall components.

1978 ◽  
Vol 36 (2) ◽  
pp. 434-435
Author(s):  
D. Reis ◽  
B. Vian ◽  
J. C. Roland
Keyword(s):  
Cell Wall ◽  
Self Assembly ◽  
Plant Cell Wall ◽  
Higher Plants ◽  
Three Dimensional ◽  
Cytochemical Study ◽  
Wall Components

Wall morphogenesis in higher plants is a problem still open to controversy. Until now the possibility of a transmembrane control and the involvement of microtubules were mostly envisaged. Self-assembly processes have been observed in the case of walls of Chlamydomonas and bacteria. Spontaneous gelling interactions between xanthan and galactomannan from Ceratonia have been analyzed very recently. The present work provides indications that some processes of spontaneous aggregation could occur in higher plants during the formation and expansion of cell wall.Observations were performed on hypocotyl of mung bean (Phaseolus aureus) for which growth characteristics and wall composition have been previously defined.In situ, the walls of actively growing cells (primary walls) show an ordered three-dimensional organization (fig. 1). The wall is typically polylamellate with multifibrillar layers alternately transverse and longitudinal. Between these layers intermediate strata exist in which the orientation of microfibrils progressively rotates. Thus a progressive change in the morphogenetic activity occurs.

In situ investigation of the primary recrystallization of alpha titanium in HVEM

1978 ◽  
Vol 36 (1) ◽  
pp. 634-635
Author(s):  
S. Naka ◽  
R. Penelle ◽  
R. Valle
Keyword(s):  
Dimensional Analysis ◽  
Texture Evolution ◽  
Cold Work ◽  
Three Dimensional ◽  
Primary Recrystallization ◽  
Thin Foils ◽  
In Situ Investigation ◽  
Grain Growth Model ◽  
Alpha Titanium

The in situ experimentation technique in HVEM seems to be particularly suitable to clarify the processes involved in recrystallization. The material under investigation was unidirectionally cold-rolled titanium of commercial purity. The problem was approached in two different ways. The three-dimensional analysis of textures was used to describe the texture evolution during the primary recrystallization. Observations of bulk-annealed specimens or thin foils annealed in the microscope were also made in order to provide information concerning the mechanisms involved in the formation of new grains. In contrast to the already published work on titanium, this investigation takes into consideration different values of the cold-work ratio, the temperature and the annealing time.Two different models are commonly used to explain the recrystallization textures i.e. the selective grain growth model (Beck) or the oriented nucleation model (Burgers). The three-dimensional analysis of both the rolling and recrystallization textures was performed to identify the mechanismsl involved in the recrystallization of titanium.

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