Template confined synthesis of Cu- or Cu2O-doped SiO2aerogels from Cu(ii)-containing composites by in situ alcohothermal reduction

RSC Advances ◽  
2014 ◽  
Vol 4 (90) ◽  
pp. 49541-49546 ◽  
Author(s):  
Weiwei Xu ◽  
Ai Du ◽  
Jun Tang ◽  
Peng Yan ◽  
Xiaoguang Li ◽  
...  
Keyword(s):  
Microstructure Evolution ◽  
Reduction Method ◽  
Evolution Mechanism ◽  
Silica Composite ◽  
Composite Aerogels

Cu2O- or Cu-contained silica composite aerogels were synthesized by anin situalcohothermal reduction method, and the microstructure evolution mechanism was systematically studied.

Transparent Cellulose–Silica Composite Aerogels with Excellent Flame Retardancy via an in Situ Sol–Gel Process

2017 ◽  
Vol 5 (11) ◽  
pp. 11117-11123 ◽  
Author(s):  
Bin Yuan ◽  
Jinming Zhang ◽  
Qinyong Mi ◽  
Jian Yu ◽  
Rui Song ◽  
...  
Keyword(s):  
Flame Retardancy ◽  
Sol Gel ◽  
Silica Composite ◽  
Sol Gel Process ◽  
Composite Aerogels

scholarly journals Dendrite-Free and Stable Lithium Metal Battery Achieved by a Model of Stepwise Lithium Deposition and Stripping

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Tiancun Liu ◽  
Jinlong Wang ◽  
Yi Xu ◽  
Yifan Zhang ◽  
Yong Wang
Keyword(s):  
Reduction Method ◽  
Coulombic Efficiency ◽  
List Type ◽  
Lithium Metal ◽  
Metal Anode ◽  
In Situ Raman ◽  
Unique Model ◽  
Li Metal Anode ◽  
Pyridinic N

Highlights A facile method is adopted to obtain cucumber-like lithiophilic composite skeleton. Massive lithiophilic sites in cucumber-like lithiophilic composite skeleton can promote and guide uniform Li depositions. A unique model of stepwise Li deposition and stripping is determined. Abstract The uncontrolled formation of lithium (Li) dendrites and the unnecessary consumption of electrolyte during the Li plating/stripping process have been major obstacles in developing safe and stable Li metal batteries. Herein, we report a cucumber-like lithiophilic composite skeleton (CLCS) fabricated through a facile oxidation-immersion-reduction method. The stepwise Li deposition and stripping, determined using in situ Raman spectra during the galvanostatic Li charging/discharging process, promote the formation of a dendrite-free Li metal anode. Furthermore, numerous pyridinic N, pyrrolic N, and CuxN sites with excellent lithiophilicity work synergistically to distribute Li ions and suppress the formation of Li dendrites. Owing to these advantages, cells based on CLCS exhibit a high Coulombic efficiency of 97.3% for 700 cycles and an improved lifespan of 2000 h for symmetric cells. The full cells assembled with LiFePO4 (LFP), SeS2 cathodes and CLCS@Li anodes demonstrate high capacities of 110.1 mAh g−1 after 600 cycles at 0.2 A g−1 in CLCS@Li|LFP and 491.8 mAh g−1 after 500 cycles at 1 A g−1 in CLCS@Li|SeS2. The unique design of CLCS may accelerate the application of Li metal anodes in commercial Li metal batteries.

Highly thermally stable zirconia/silica composite aerogels prepared by supercritical deposition

2017 ◽  
Vol 238 ◽  
pp. 90-96 ◽  
Author(s):  
Guoqing Zu ◽  
Jun Shen ◽  
Liping Zou ◽  
Wenbing Zou ◽  
Dayong Guan ◽  
...  
Keyword(s):  
Thermally Stable ◽  
Silica Composite ◽  
Composite Aerogels ◽  
Supercritical Deposition

Review on Relationships of Temperature History, Fatigue Damage and Microstructure Evolution Mechanism of Concrete

2014 ◽  
Vol 584-586 ◽  
pp. 944-950 ◽  
Author(s):  
Dong Fu Zhao ◽  
Mei Liu ◽  
Shi Ji Zhang
Keyword(s):  
High Temperature ◽  
Fatigue Damage ◽  
Microstructure Evolution ◽  
Research Direction ◽  
Concrete Research ◽  
Temperature History ◽  
Evolution Mechanism ◽  
Main Research ◽  
High Temperature Process ◽  
Application Prospects

The domestic and overseas research progresses of microstructure of the concrete and fatigue damage after treated by high temperature are reviewed. The main research direction and current shortage on the high temperature process, fatigue damage and the microstructure evolution mechanism of concrete are discussed. A view of the application prospects of concrete research on the high temperature process, fatigue damage and the microstructure evolution mechanism of concrete is forecast.

The ferromagnetic–antiferromagnetic properties of Ni–Cr2O3composite hollow spheres prepared by an in situ reduction method

CrystEngComm ◽  
2014 ◽  
Vol 16 (7) ◽  
pp. 1322-1333 ◽  
Author(s):  
Shuijin Lei ◽  
Lei Liu ◽  
Chunying Wang ◽  
Xiaolian Shen ◽  
Donghai Guo ◽  
...  
Keyword(s):  
Reduction Method ◽  
Hollow Spheres ◽  
In Situ Reduction

In situ isotopic analysis of uranium using a new data acquisition protocol for 1013 ohm Faraday amplifiers

2021 ◽  
Author(s):  
Kota Yamamoto ◽  
Hisashi Asanuma ◽  
Hiroaki Takahashi ◽  
Takafumi Hirata
Keyword(s):  
Data Acquisition ◽  
Data Reduction ◽  
Reduction Method ◽  
Isotopic Analysis ◽  
High Gain ◽  
Transient Signals ◽  
Acquisition Protocol ◽  
Data Reduction Method ◽  
Isotopic Measurements

New data reduction method for isotopic measurements using high-gain Faraday amplifiers enables precise uranium isotopic analysis even from transient signals.

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