Room-Temperature All-Solid-State Sodium Battery Based on Bulk Interfacial Superionic Conductor

AbstractPhotoresistant laser dyes were trapped in silica based xerogel host matrices to obtain solid state tunable lasers. For this purpose very dense xerogel samples with improved chemical and physical properties were prepared at room temperature by the sol-gel technology. The as-prepared materials were polished to obtain optical quality surfaces and were used as new lasing media.Lasing action of such different dyes as rhodamine, perylene and pyrromethene doping dense sol-gel matrices was demonstrated. Efficiencies of 30 % or lifetimes of more than 100,000 shots were achieved with different new ≤dye dopant/host matrix≥ couples. Their different performances are reviewed and discussed.

Download Full-text

Imidazole Promoted Efficient Anomerization of β-D-Glucose Pentaacetate in Organic Solutions and Solid State

10.26434/chemrxiv.7257182.v3 ◽

2019 ◽

Author(s):

Meifeng Wang ◽

Liyin Zhang ◽

Yiqun Li ◽

Liuqun Gu

Keyword(s):

Solid State ◽

Organic Solvents ◽

Room Temperature ◽

Materials Design ◽

The Future ◽

Organic Solutions ◽

Glucose Pentaacetate

<p></p>Anomerization of glycosides were rarely performed under basic condition due to lack of efficiency. Here an imidazole promoted anomerization of β-D-glucose pentaacetate was developed; and reaction could proceed in both organic solvents and solid state at room temperature. Although mechanism is not yet clear, this unprecedent mild anomerization in solid state may open a new promising way for stereoseletive anomerization of broad glucosides and materials design in the future..

Download Full-text

Circular dichroism and infrared study of β-turn formation in repeat peptides of elastin

Collection of Czechoslovak Chemical Communications ◽

10.1135/cccc19871356 ◽

1987 ◽

Vol 52 (5) ◽

pp. 1356-1361

Author(s):

S. Abdel Rahman ◽

M. Elsafty ◽

A. Hattaba

Keyword(s):

Circular Dichroism ◽

Solid State ◽

Ir Spectra ◽

Chain Length ◽

Room Temperature ◽

Infrared Study ◽

Feature Characteristic ◽

C 50 ◽

The Stability ◽

Circular Dichroïsm

The conformation of elastin-like peptides Boc-Ala-Pro-Gly-Val-APEGM, Boc-Ala-Pro-Gly-Val-Gly-Val-APEGM, Boc-Ala-Pro-Gly-Val-Ala-Pro-Gly-Val-Gly-Val-APEGM, Boc-Ala-Pro-Gly-Val-Gly-Val-Ala-Pro-Gly-Val-Gly-Val-APEGM were examined in solution using circular dichroism at 30 °C, 50 °C, and 70 °C and in solid state by IR at room temperature. The studies show that the β-turn is a significant conformational feature for peptides under investigation in solution at 30 °C and 50 °C, but at 70 °C the tetra, hexa, and decapeptides show the CD feature characteristic of the β-structure while the dodecapeptide spectra show the presence of β-turn which indicates the stability of the β-turn at this chain length. The IR spectra show that in the solid state at room temperature all investigated peptides assume essentially a β-turn except the tetrapeptide which present evidence of antiparallel β-structure. The β-turn contribution in the IR spectra increases with the increase of the chain length of the peptide.

Download Full-text

Ultrathin Layered Double Hydroxide Nanosheets Enabling Composite Polymer Electrolyte for All‐Solid‐State Lithium Batteries at Room Temperature

Advanced Functional Materials ◽

10.1002/adfm.202101168 ◽

2021 ◽

pp. 2101168

Author(s):

Shuixin Xia ◽

Binbin Yang ◽

Hebin Zhang ◽

Junhe Yang ◽

Wei Liu ◽

...

Keyword(s):

Solid State ◽

Polymer Electrolyte ◽

Layered Double Hydroxide ◽

Lithium Batteries ◽

Room Temperature ◽

Composite Polymer Electrolyte ◽

Composite Polymer ◽

Double Hydroxide

Download Full-text

Preparation of Li3PS4–Li3PO4 Solid Electrolytes by Liquid-Phase Shaking for All-Solid-State Batteries

Electronic Materials ◽

10.3390/electronicmat2010004 ◽

2021 ◽

Vol 2 (1) ◽

pp. 39-48

Author(s):

Nguyen H. H. Phuc ◽

Takaki Maeda ◽

Tokoharu Yamamoto ◽

Hiroyuki Muto ◽

Atsunori Matsuda

Keyword(s):

Solid Solution ◽

Solid State ◽

Liquid Phase ◽

Room Temperature ◽

Reaction Medium ◽

Magic Angle Spinning ◽

Resonance Spectroscopy ◽

Synthesis Methods ◽

Magic Angle ◽

Angle Spinning

A solid solution of a 100Li3PS4·xLi3PO4 solid electrolyte was easily prepared by liquid-phase synthesis. Instead of the conventional solid-state synthesis methods, ethyl propionate was used as the reaction medium. The initial stage of the reaction among Li2S, P2S5 and Li3PO4 was proved by ultraviolet-visible spectroscopy. The powder X-ray diffraction (XRD) results showed that the solid solution was formed up to x = 6. At x = 20, XRD peaks of Li3PO4 were detected in the prepared sample after heat treatment at 170 °C. However, the samples obtained at room temperature showed no evidence of Li3PO4 remaining for x = 20. Solid phosphorus-31 magic angle spinning nuclear magnetic resonance spectroscopy results proved the formation of a POS33− unit in the sample with x = 6. Improvements of ionic conductivity at room temperature and activation energy were obtained with the formation of the solid solution. The sample with x = 6 exhibited a better stability against Li metal than that with x = 0. The all-solid-state half-cell employing the sample with x = 6 at the positive electrode exhibited a better charge–discharge capacity than that employing the sample with x = 0.

Download Full-text