Dual functional hetero-anthracene based single component organic ionic conductors as redox mediator cum light harvester for solid state photoelectrochemical cells

2018 ◽  
Vol 6 (11) ◽  
pp. 4868-4877 ◽  
Author(s):  
Jayraj V. Vaghasiya ◽  
Keval K. Sonigara ◽  
Saurabh S. Soni ◽  
Swee Ching Tan
Keyword(s):  
Solid State ◽  
Redox Mediator ◽  
Ionic Conductor ◽  
Single Component ◽  
Photoelectrochemical Cells ◽  
Ionic Conductors ◽  
Dual Functional ◽  
Absorbing Material

We have synthesized a novel solid organic ionic conductor (SOIC) that acts as a redox mediator and a light absorbing material at the same time.

Further Evidence for Energy Landscape Flattening in the Superionic Argyrodites Li6+xP1−xMxS5I (M = Si, Ge, Sn)

2019 ◽  
Author(s):  
Saneyuki Ohno ◽  
Bianca Helm ◽  
Till Fuchs ◽  
Georg Dewald ◽  
Marvin Kraft ◽  
...  
Keyword(s):  
Solid State ◽  
Activation Barrier ◽  
Energy Landscape ◽  
General Mechanism ◽  
Ionic Conductors ◽  
Energy Storage Devices ◽  
Ion Conductor ◽  
Storage Devices ◽  
Open Questions ◽  
Sudden Decrease

<p>All-solid-state batteries are promising candidates for next-generation energy storage devices. Although the list of candidate materials for solid electrolytes has grown in the past decade, there are still many open questions concerning the mechanisms behind ionic migration in materials. In particular, the lithium thiophosphate family of materials has shown very promising properties for solid-state battery applications. Recently, the Ge-substituted Li<sub>6</sub>PS<sub>5</sub>I argyrodite was shown to be a very fast Li-ion conductor, despite the poor ionic conductivity of the unsubstituted Li<sub>6</sub>PS<sub>5</sub>I. Therein, the conductivity was enhanced by over three orders of magnitude due to the emergence of I<sup>−</sup>/S<sup>2−</sup>exchange, <i>i.e.</i>site-disorder, which led to a sudden decrease of the activation barrier with a concurrent flattening of the energy landscapes. Inspired by this work, two series of elemental substitutions in Li<sub>6+<i>x</i></sub>P<sub>1−<i>x</i></sub><i>M<sub>x</sub></i>S<sub>5</sub>I (<i>M</i>= Si and Sn) were investigated in this study and compared to the Ge-analogue. A sharp reduction in the activation energy was observed at the same <i>M</i><sup>4+</sup>/P<sup>5+</sup>composition as previously found in the Ge-analogue, suggesting a more general mechanism at play. Furthermore, structural analyses with X-ray and neutron diffraction indicate that similar changes in the Li-sublattice occur despite a significant variation in the size of the substituents, suggesting that in the argyrodites, the lithium substructure is most likely influenced by the occurring Li<sup>+</sup>– Li<sup>+</sup>interactions. This work provides further evidence that the energy landscape of ionic conductors can be tailored by inducing local disorder.</p>

Single-component small-molecule white light organic phosphors

2017 ◽  
Vol 53 (66) ◽  
pp. 9269-9272 ◽  
Author(s):  
Ning-Ning Zhang ◽  
Cai Sun ◽  
Xiao-Ming Jiang ◽  
Xiu-Shuang Xing ◽  
Yong Yan ◽  
...  
Keyword(s):  
Solid State ◽  
Small Molecule ◽  
White Light ◽  
Light Emission ◽  
White Light Emission ◽  
Single Component ◽  
Supramolecular Aggregate ◽  
Organic Phosphors

A family of two small and easily synthesizable 1,2,3-triazole molecules with intrinsic white-light-emission in the solid state has been reported. The white light is assigned to the supramolecular aggregate emission (SAE) that is unusual for single-component white light phosphors.

Supertetrahedral Anions in the Phosphidosilicates Na1.25Ba0.875Si3P5 and Na31Ba5Si52P83

2021 ◽  
Author(s):  
Dirk Johrendt ◽  
Arthur Haffner ◽  
Otto Zeman ◽  
Thomas Bräuniger
Keyword(s):  
Solid State ◽  
Ionic Conductors ◽  
Ion Conduction ◽  
Solid State Batteries ◽  
All Solid State Batteries ◽  
Sodium And Potassium

Solid ionic conductors are one key component of all-solid-state batteries, and recent studies with lithium, sodium and potassium phosphidosilicates revealed remarkable ion conduction capabilities in these compounds. We report the...

Role of a phenothiazine/phenoxazine donor in solid ionic conductors for efficient solid state dye sensitized solar cells

2017 ◽  
Vol 5 (11) ◽  
pp. 5373-5382 ◽  
Author(s):  
Jayraj V. Vaghasiya ◽  
Keval K. Sonigara ◽  
Jyoti Prasad ◽  
Thomas Beuvier ◽  
Alain Gibaud ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Solar Cell ◽  
Solid State ◽  
Dye Sensitized Solar Cells ◽  
Electron Donors ◽  
Ionic Conductors ◽  
Good Thermal Stability ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Efficient electron donors, phenothiazine (PTZ)/phenoxazine (POZ) substituted imidazolium (IMI) and benzimidazolium (BIMI) iodide solid organic ionic conductors (SOICs) possessing good thermal stability and high conductivity are synthesized and used as electrolytes in solid state dye solar cell (ss-DSSC).

A redox mediator doped gel polymer as an electrolyte and separator for a high performance solid state supercapacitor

2015 ◽  
Vol 3 (7) ◽  
pp. 4035-4041 ◽  
Author(s):  
Guofu Ma ◽  
Miaomiao Dong ◽  
Kanjun Sun ◽  
Enke Feng ◽  
Hui Peng ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Sulfuric Acid ◽  
Solid State ◽  
Polyvinyl Alcohol ◽  
High Performance ◽  
Indigo Carmine ◽  
Polymer System ◽  
Redox Mediator ◽  
Gel Electrolyte

A stable and effective redox-mediator gel electrolyte has been prepared by doping indigo carmine (IC) into a polyvinyl alcohol sulfuric acid polymer system (PVA–H2SO4), and a high performance solid state supercapacitor is fabricated by utilizing activated carbon as electrodes and the prepared gel polymer (PVA–H2SO4–IC) as an electrolyte and separator.

A Very Mechanically Strong and Stretchable Liquid-Free Double-Network Ionic Conductor

2021 ◽  
Author(s):  
Kai Zhao ◽  
Kaili Zhang ◽  
Ren'ai Li ◽  
Peisen Sang ◽  
Huawen Hu ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Flexible Electronics ◽  
Ionic Conductor ◽  
Water Evaporation ◽  
Ionic Conductors ◽  
Double Network

Liquid-free ionic conductors are very desirable for flexible electronics, because hydrogels and ionic liquid-based ionogels suffer from water evaporation and ionic liquid leakage, respectively. However, the development of liquid-free ionic...

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