scholarly journals Redox‐mediated proton transport of two‐dimensional polyaniline‐based nanochannels for fast capacitive performance

2022 ◽  
pp. 20210004
Author(s):  
Mengying Yu ◽  
Huabo Liu ◽  
Kefeng Xiao ◽  
Bingqiao Xie ◽  
Zhaojun Han ◽  
...  
Keyword(s):  
Proton Transport ◽  
Two Dimensional ◽  
Capacitive Performance

scholarly journals Solvothermal Preparation of Spherical Bi2O3 Nanoparticles Uniformly Distributed on Ti3C2Tx for Enhanced Capacitive Performance

2021 ◽  
Author(s):  
Tao Li ◽  
Xuefeng Chang ◽  
Lifang Mei ◽  
Xiayun Shu ◽  
Jidong Ma ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Chemical Stability ◽  
Layered Structure ◽  
Layered Material ◽  
Two Dimensional ◽  
Capacitive Performance ◽  
Solvothermal Preparation

Ti3C2Tx is a promising new two-dimensional layered material for supercapacitors with good electrical conductivity and chemical stability. However, Ti3C2Tx has problems such as collapse of the layered structure and low...

scholarly journals Proteomic analysis of the pulvinus, a heliotropic tissue, in Glycine max

2014 ◽  
Vol 5 (1) ◽  
Author(s):  
Hakme Lee ◽  
Wesley M. Garrett ◽  
Joseph Sullivan ◽  
Irwin Forseth ◽  
Savithiry S. Natarajan
Keyword(s):  
Mass Spectrometry ◽  
Gene Ontology ◽  
Gel Electrophoresis ◽  
Proton Transport ◽  
Enrichment Analysis ◽  
The Sun ◽  
Leaf Movement ◽  
Two Dimensional ◽  
Two Dimensional Gel Electrophoresis ◽  
Leguminous Plants

Certain plant species respond to light, dark, and other environmental factors by leaf movement. Leguminous plants both track and avoid the sun through turgor changes of the pulvinus tissue at the base of leaves. Mechanisms leading to pulvinar turgor flux, particularly knowledge of the proteins involved, are not well-known. In this study we used two-dimensional gel electrophoresis and liquid chromatography-tandom mass spectrometry to separate and identify the proteins located in the soybean pulvinus. A total of 183 spots were separated and 195 proteins from 165 spots were identified and functionally analyzed using single enrichment analysis for gene ontology terms. The most significant terms were related to proton transport. Comparison with guard cell proteomes revealed similar significant processes but a greater number of pulvinus proteins are required for comparable analysis. To our knowledge, this is a novel report on the analysis of proteins found in soybean pulvinus. These findings provide a better understanding of the proteins required for turgor change in the pulvinus.

scholarly journals Insights into the electric double-layer capacitance of two-dimensional electrically conductive metal-organic frameworks

2021 ◽  
Author(s):  
Jamie W. Gittins ◽  
Chloe J. Balhatchet ◽  
Yuan Chen ◽  
Cheng Liu ◽  
David G. Madden ◽  
...  
Keyword(s):  
Double Layer ◽  
Electric Double Layer ◽  
Electrode Materials ◽  
Metal Organic Frameworks ◽  
Significant Finding ◽  
Two Dimensional ◽  
Electrically Conductive ◽  
Capacitive Performance ◽  
Metal Organic ◽  
Organic Linker

Two-dimensional electrically conductive metal-organic frameworks (MOFs) have emerged as promising model electrodes for use in electric double-layer capacitors (EDLCs). However, a number of fundamental questions about the behaviour of this class of materials in EDLCs remain unanswered, including the effect of the identity of the metal node and organic linker molecule on capacitive performance and the limitations of current conductive MOFs in these devices relative to traditional activated carbon electrode materials. Herein, we address both these questions via a detailed study of the capacitive performance of the framework Cu<sub>3</sub>(HHTP)<sub>2</sub> (HHTP = 2,3,6,7,10,11-hexahydroxytriphenylene) with an acetonitrile-based electrolyte, finding a specific capacitance of 110 – 114 F g<sup>−1</sup> at current densities of 0.04 – 0.05 A g<sup>−1</sup> and a modest rate capability. By, directly comparing its performance with the previously reported analogue, Ni<sub>3</sub>(HITP)<sub>2</sub> (HITP = 2,3,6,7,10,11-hexaiminotriphenylene), we illustrate that capacitive performance is largely independent of the identity of the metal node and organic linker molecule in these nearly isostructural MOFs. Importantly, this result suggests that EDLC performance in general is uniquely defined by the 3D structure of the electrodes and the electrolyte, a significant finding not demonstrated using traditional electrode materials. Finally, we probe the limitations of Cu<sub>3</sub>(HHTP)<sub>2</sub> in EDLCs, finding a limited cell voltage window of 1.3 V and only a modest capacitance retention of 81 % over 30,000 cycles, both significantly lower than state-of-the-art porous carbons. These important insights will aid the design of future conductive MOFs with greater EDLC performances.

Secondary dialkylammonium salt/crown ether [2]pseudorotaxanes as nanostructured platforms for proton transport

2018 ◽  
Vol 54 (58) ◽  
pp. 8092-8095 ◽  
Author(s):  
Lijie Li ◽  
Lipeng He ◽  
Binghua Wang ◽  
Peng Ge ◽  
Lei Jing ◽  
...  
Keyword(s):  
Crown Ether ◽  
Proton Conductivity ◽  
Proton Transport ◽  
Two Dimensional ◽  
Rational Control

Secondary dialkylammonium salt/crown ether [2]pseudorotaxanes can be confined into two-dimensional nanochannels, leading to remarkable enhancements and rational control of proton conductivity.

scholarly journals Insights Into the Electric Double-Layer Capacitance of the Two-Dimensional Electrically Conductive Metal-Organic Framework Cu3(HHTP)2

2021 ◽  
Author(s):  
Jamie W. Gittins ◽  
Chloe J. Balhatchet ◽  
Yuan Chen ◽  
Cheng Liu ◽  
David G. Madden ◽  
...  
Keyword(s):  
Double Layer ◽  
Electric Double Layer ◽  
Metal Organic Framework ◽  
Cell Voltage ◽  
Two Dimensional ◽  
Electrically Conductive ◽  
Capacitive Performance ◽  
Metal Organic ◽  
Current Densities ◽  
Improved Performance

Two-dimensional electrically conductive metal-organic frameworks (MOFs) have emerged as promising model electrodes for use in electric double-layer capacitors (EDLC). Here, we demonstrate the high capacitive performance of the framework Cu<sub>3</sub>(HHTP)<sub>2</sub> (HHTP = 2,3,6,7,10,11-hexahydroxytriphenylene) with an organic electrolyte and compare its behaviour with the previously reported analogue, Ni<sub>3</sub>(HITP)<sub>2</sub> (HITP = 2,3,6,7,10,11-hexaiminotriphenylene). At low current densities of 0.04 – 0.05 A g<sup>−1</sup>, Cu<sub>3</sub>(HHTP)<sub>2</sub> electrodes exhibit a specific capacitance of 110 – 114 F g<sup>−1</sup> and show modest capacitance retentions (66 %) at current densities up to 2 A g<sup>−1</sup> , mirroring the performance of Ni<sub>3</sub>(HITP)<sub>2</sub> and suggesting that capacitive performance is largely independent of the identity of the metal node and organic linker molecule. However, we find a limited cell voltage window of 1.3 V and only moderate capacitance retention (86 %) over 30,000 cycles at a moderate current density of 1 A g<sup>−1</sup>, both significantly lower than state-of-the-art porous carbons. These important insights will aid the design of future conductive MOFs with improved performance in EDLCs.

scholarly journals Nitrogen-doped porous carbon/graphene nanosheets derived from two-dimensional conjugated microporous polymer sandwiches with promising capacitive performance

2017 ◽  
Vol 1 (2) ◽  
pp. 278-285 ◽  
Author(s):  
Kai Yuan ◽  
Ting Hu ◽  
Yazhou Xu ◽  
Robert Graf ◽  
Lei Shi ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Graphene Nanosheets ◽  
Two Dimensional ◽  
Carbon Nanosheets ◽  
Capacitive Performance ◽  
Nitrogen Doped ◽  
Conjugated Microporous Polymer ◽  
Microporous Polymer

Hierarchical, N-doped carbon nanosheets with very promising capacitive performance are prepared using a straightforward procedure.

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