Degradation-induced capacitance: a new insight into the superior capacitive performance of polyaniline/graphene composites

2017 ◽  
Vol 10 (11) ◽  
pp. 2372-2382 ◽  
Author(s):  
Qin’e Zhang ◽  
An’an Zhou ◽  
Jingjing Wang ◽  
Jifeng Wu ◽  
Hua Bai
Keyword(s):  
High Conductivity ◽  
Superior Performance ◽  
Composite Electrodes ◽  
Capacitive Performance ◽  
Graphene Composite ◽  
Insight Into ◽  
Conductivity Matrix

Degradation of PANI induces superior performance of PANI/graphene composite electrodes with the high conductivity matrix of graphene.

scholarly journals In situ synthesis of methane using Ag–GDC composite electrodes in a tubular solid oxide electrolytic cell: new insight into the role of oxide ion removal

2021 ◽  
Vol 5 (7) ◽  
pp. 2055-2064
Author(s):  
Saheli Biswas ◽  
Aniruddha P. Kulkarni ◽  
Daniel Fini ◽  
Sarbjit Giddey ◽  
Sankar Bhattacharya
Keyword(s):  
Electrolytic Cell ◽  
Composite Electrodes ◽  
Ion Removal ◽  
Single Temperature ◽  
Methanation Catalyst ◽  
Oxide Ion ◽  
Insight Into ◽  
Electrochemical Phenomenon

In situ synthesis of methane in a single-temperature zone SOEC in the absence of any methanation catalyst is a completely electrochemical phenomenon governed by the thermodynamic equilibrium of various reactions.

Power performance of BFO-graphene composite electrodes based supercapacitor

2018 ◽  
Vol 6 (2) ◽  
pp. 025054 ◽  
Author(s):  
Ankur Soam ◽  
C Mahender ◽  
Rahul Kumar ◽  
Mamraj Singh
Keyword(s):  
Composite Electrodes ◽  
Power Performance ◽  
Graphene Composite

scholarly journals A high-energy, long cycle-life hybrid supercapacitor based on graphene composite electrodes

2017 ◽  
Vol 7 ◽  
pp. 32-39 ◽  
Author(s):  
Bote Zhao ◽  
Dongchang Chen ◽  
Xunhui Xiong ◽  
Bo Song ◽  
Renzong Hu ◽  
...  
Keyword(s):  
High Energy ◽  
Cycle Life ◽  
Composite Electrodes ◽  
Hybrid Supercapacitor ◽  
Long Cycle ◽  
Long Cycle Life ◽  
Graphene Composite

Controllable synthesis of Mo2C with different morphology and application to electrocatalytic hydrogen evolution reaction

2021 ◽  
Author(s):  
He-qiang Chang ◽  
Guo-Hua Zhang ◽  
Kuo-Chih Chou
Keyword(s):  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Structural Design ◽  
Superior Performance ◽  
Controllable Synthesis ◽  
Nitridation Reaction ◽  
Special Surface ◽  
One Step ◽  
The One ◽  
Insight Into

Abstract In order to evaluate the effect of precursors and synthesis strategies on catalytic ability of Mo2C in the hydrogen evolution reaction (HER), four kinds of Mo2C were synthesized using two kinds of MoO3 by two strategies. Compared with the one-step direct carbonization strategy, Mo2C with a large special surface area and a better performance could be synthesized by the two-step strategy composed of a nitridation reaction and a carbonization reaction. Additionally, the as-prepared porous Mo2C nanobelts (NBs) exhibit good electrocatalytic performance with a small overpotential of 165 mV (0.5 M H2SO4) and 124 mV (1 M KOH) at 10 mA cm-2, as well as a Tafel slope of 58 mV dec-1 (0.5 M H2SO4) and 59 mV dec-1 (1 M KOH). The excellent catalytic activity is ascribed to the nano crystallites and porous structure. What’s more, the belt structure also facilitates the charge transport in the materials during the electrocatalytic HER process. Therefore, the two-step strategy provides a new insight into the structural design with superior performance for electrocatalytic HER.

scholarly journals Insight into the Formation of Glimepiride Nanocrystals by Wet Media Milling

Pharmaceutics ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 53 ◽  
Author(s):  
Djordje Medarević ◽  
Svetlana Ibrić ◽  
Elisavet Vardaka ◽  
Miodrag Mitrić ◽  
Ioannis Nikolakakis ◽  
...  
Keyword(s):  
Dissolution Rate ◽  
Spray Drying ◽  
Lattice Energy ◽  
Superior Performance ◽  
Dissolution Enhancement ◽  
Polymorphic Transformations ◽  
Topology Analysis ◽  
Media Milling ◽  
Ft Ir ◽  
Insight Into

Nanocrystal formation for the dissolution enhancement of glimepiride was attempted by wet media milling. Different stabilizers were tested and the obtained nanosuspensions were solidified by spray drying in presence of mannitol, and characterized regarding their redispersibility by dynamic light scattering, physicochemical properties by differential scanning calorimetry (DSC), FT-IR spectroscopy, powder X-ray diffraction (PXRD), and scanning electron microcopy (SEM), as well as dissolution rate. Lattice energy frameworks combined with topology analysis were used in order to gain insight into the mechanisms of particle fracture. It was found that nanosuspensions with narrow size distribution can be obtained in presence of poloxamer 188, HPC-SL and Pharmacoat® 603 stabilizers, with poloxamer giving poor redispersibility due to melting and sticking of nanocrystals during spray drying. DSC and FT-IR studies showed that glimepiride does not undergo polymorphic transformations during processing, and that the milling process induces changes in the hydrogen bonding patterns of glimepiride crystals. Lattice energy framework and topology analysis revealed the existence of a possible slip plane on the (101) surface, which was experimentally verified by PXRD analysis. Dissolution testing proved the superior performance of nanocrystals, and emphasized the important influence of the stabilizer on the dissolution rate of the nanocrystals.

Amorphous NiWO4 Nanospheres with High-Conductivity and -Capacitive Performance for Supercapacitors

2019 ◽  
Vol 123 (50) ◽  
pp. 30067-30076
Author(s):  
Yunxia Huang ◽  
Ya Gao ◽  
Chunhua Liu ◽  
Zhanzhi Cao ◽  
Yuan Wang ◽  
...  
Keyword(s):  
High Conductivity ◽  
Capacitive Performance

Polyoxometalate-Incorporated Metallacalixarene@Graphene Composite Electrodes for High-Performance Supercapacitors

2019 ◽  
Vol 11 (23) ◽  
pp. 20845-20853 ◽  
Author(s):  
Yan Hou ◽  
Dongfeng Chai ◽  
Bonan Li ◽  
Haijun Pang ◽  
Huiyuan Ma ◽  
...  
Keyword(s):  
High Performance ◽  
Composite Electrodes ◽  
Graphene Composite
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