scholarly journals Rechargeable aluminum–selenium batteries with high capacity

2018 ◽  
Vol 9 (23) ◽  
pp. 5178-5182 ◽  
Author(s):  
Xiaodan Huang ◽  
Yang Liu ◽  
Chao Liu ◽  
Jun Zhang ◽  
Owen Noonan ◽  
...  
Keyword(s):  
Redox Reaction ◽  
High Capacity ◽  
Reversible Redox ◽  
First Time

An aluminum–selenium battery powered by the reversible redox reaction of Se/Se2Cl2 has been developed for the first time.

Influence of Metal Substitution on the Pressure-Induced Phase Change in Flexible Zeolitic Imidazolate Frameworks

2018 ◽  
Author(s):  
C. Michael McGuirk ◽  
Tomče Runčevski ◽  
Julia Oktawiec ◽  
Ari Turkiewicz ◽  
mercedes K. taylor ◽  
...  
Keyword(s):  
Phase Change ◽  
Single Crystal ◽  
Gas Adsorption ◽  
High Capacity ◽  
Phase Changes ◽  
Zeolitic Imidazolate Frameworks ◽  
Metal Substitution ◽  
Heat Management ◽  
Metal Organic ◽  
First Time

<p>Metal–organic frameworks that display step-shaped adsorption profiles arising from discrete pressure-induced phase changes are promising materials for applications in both high-capacity gas storage and energy-efficient gas separations. The thorough investigation of such materials through chemical diversification, gas adsorption measurements, and <i>in situ </i>structural characterization is therefore crucial for broadening their utility. We examine a series of isoreticular, flexible zeolitic imidazolate frameworks (ZIFs) of the type M(bim)<sub>2</sub> (SOD; M = Zn<sup> </sup>(ZIF-7), Co (ZIF-9), Cd (CdIF-13); bim<sup>–</sup> = benzimidazolate), and elucidate the effects of metal substitution on the pressure-responsive phase changes and the resulting CO<sub>2</sub> and CH<sub>4</sub> step positions, pre-step uptakes, and step capacities. Using ZIF-7 as a benchmark, we reexamine the poorly understood structural transition responsible for its adsorption steps and, through high-pressure adsorption measurements, verify that it displays a step in its CH<sub>4 </sub>adsorption isotherms. The ZIF-9 material is shown to undergo an analogous phase change, yielding adsorption steps for CO<sub>2</sub> and CH<sub>4</sub> with similar profiles and capacities to ZIF-7, but with shifted threshold pressures. Further, the Cd<sup>2+</sup> analogue CdIF-13 is reported here for the first time, and shown to display adsorption behavior distinct from both ZIF-7 and ZIF-9, with negligible pre-step adsorption, a ~50% increase in CO<sub>2</sub> and CH<sub>4</sub> capacity, and dramatically higher threshold adsorption pressures. Remarkably, a single-crystal-to-single-crystal phase change to a pore-gated phase is also achieved with CdIF-13, providing insight into the phase change that yields step-shaped adsorption in these flexible ZIFs. Finally, we show that the endothermic phase change of these frameworks provides intrinsic heat management during gas adsorption. </p>

scholarly journals Nanostructured intermetallic InSb as a high-capacity and high-performance negative electrode for sodium-ion batteries

2021 ◽  
Author(s):  
Irshad Mohammad ◽  
Lucie Blondeau ◽  
Eddy Foy ◽  
Jocelyne Leroy ◽  
Eric Leroy ◽  
...  
Keyword(s):  
Intermetallic Compound ◽  
High Performance ◽  
High Capacity ◽  
Negative Electrode ◽  
Sodium Ion ◽  
Sodium Ion Batteries ◽  
Negative Electrodes ◽  
First Time

Following the trends of alloys as negative electrodes for Na-ion batteries, the sodiation of the InSb intermetallic compound was investigated for the first time. The benefit of coupling Sb with...

In-situ monitoring reversible redox reaction and circulating detection of nitrite via an ultrasensitive magnetic Au@Ag SERS substrate

2018 ◽  
Vol 256 ◽  
pp. 107-116 ◽  
Author(s):  
Ping Chen ◽  
Aiwu Zhao ◽  
Jin Wang ◽  
Qinye He ◽  
Henghui Sun ◽  
...  
Keyword(s):  
Redox Reaction ◽  
In Situ Monitoring ◽  
Sers Substrate ◽  
Reversible Redox

A Novel Dual-functional Fluorescent Probe for Imaging Viscosity and Cysteine in Living System

2021 ◽  
Author(s):  
Manlin Fu ◽  
Kai Wang ◽  
Qiancheng Ma ◽  
Mianli Bian ◽  
Qing Zhu
Keyword(s):  
Fluorescent Probe ◽  
Redox Reaction ◽  
Living System ◽  
Pivotal Role ◽  
Biological Processes ◽  
Dual Functional ◽  
Reversible Redox

Abnormal changes in intracellular viscosity and cysteine are both associated with several important biological processes such as reversible redox reaction, which plays a pivotal role in the process of inflammation....

scholarly journals A High Capacity, Room Temperature, Hybrid Flow Battery Consisting of Liquid Na-Cs Anode and Aqueous NaI Catholyte

Batteries ◽  
2018 ◽  
Vol 4 (4) ◽  
pp. 60 ◽  
Author(s):  
Caihong Liu ◽  
Leon Shaw
Keyword(s):  
Room Temperature ◽  
Electrochemical Impedance ◽  
Coulombic Efficiency ◽  
High Capacity ◽  
High Energy ◽  
Flow Battery ◽  
Membrane Interfaces ◽  
Number Of Cycles ◽  
Novel Concept ◽  
First Time

In this study, we have proposed a novel concept of hybrid flow batteries consisting of a molten Na-Cs anode and an aqueous NaI catholyte separated by a NaSICON membrane. A number of carbonaceous electrodes are studied using cyclic voltammetry (CV) for their potentials as the positive electrode of the aqueous NaI catholyte. The charge transfer impedance, interfacial impedance and NaSICON membrane impedance of the Na-Cs ‖ NaI hybrid flow battery are analyzed using electrochemical impedance spectroscopy. The performance of the Na-Cs ‖ NaI hybrid flow battery is evaluated through galvanostatic charge/discharge cycles. This study demonstrates, for the first time, the feasibility of the Na-Cs ‖ NaI hybrid flow battery and shows that the Na-Cs ‖ NaI hybrid flow battery has the potential to achieve the following properties simultaneously: (i) An aqueous NaI catholyte with good cycle stability, (ii) a durable and low impedance NaSICON membrane for a large number of cycles, (iii) stable interfaces at both anode/membrane and cathode/membrane interfaces, (iv) a molten Na-Cs anode capable of repeated Na plating and stripping, and (v) a flow battery with high Coulombic efficiency, high voltaic efficiency, and high energy efficiency.

scholarly journals Self-driven mercury motor via redox reaction in acid solution

RSC Advances ◽  
2017 ◽  
Vol 7 (52) ◽  
pp. 32552-32558 ◽  
Author(s):  
Jiali Wang ◽  
Baozhan Zheng ◽  
Jinlan Xiao ◽  
Xiaoling Liu ◽  
Hongyun Ji ◽  
...  
Keyword(s):  
Acid Solution ◽  
Redox Reaction ◽  
First Time

The phenomenon of self-driven motion of mercury drop was found for the first time in NaIO4/H2SO4 solution, which is based on the electrons transfer from aluminum to mercury by redox reaction.

Degradation of Foron Dye by Means of Orderly Dispersion of MoS2 Nanoparticles on Mesoporous ZnO Systems Using Visible Light

2019 ◽  
Vol 11 (11) ◽  
pp. 1531-1539
Author(s):  
I. A. Mkhalid
Keyword(s):  
Charge Carrier ◽  
Dye Degradation ◽  
High Capacity ◽  
Blue Dye ◽  
Mesoporous Zno ◽  
Large Pore Volume ◽  
Carrier Separation ◽  
Xrd Patterns ◽  
First Time ◽  
Accelerated Charge

For the first time, we in this study prepared uniform MoS2 nanoparticles on ZnO mesoporous. XRD patterns established that the synthesized ZnO and MoS2/ZnO samples were composed of ZnO phase. The TEM results revealed that MoS2 and ZnO were very close to each other, with 4–8 nm in sizes of particles. The MoS2/ZnO nanocomposites have many advantages, and some of these advantages are large surface area (105 m2g–1 and large pore volume (0.19 cm3g–1. Foron blue dye degradation over 3 wt% MoS2/ZnO nanocomposite was 254 times larger than that of mesoporous zinc oxide. Also, Foron blue dye degradation over 3 wt% MoS2/ZnO nanocomposite was 1.8 and 1.2 times greater than that of 0.5 wt% MoS2/ZnO and 1 wt% MoS2/ZnO nanocomposite, respectively. The increased Foron blue dye degradation by increase wt% of MoS2, due to increased separation of charge carrier and high capacity of light-harvesting. Moreover, high foron blue dye degradation was due to formation of a heterostructure between ZnO and MoS2, which accelerated charge carrier separation and improved degradation efficiency. The XPS and HRTEM results revealed that the MoS2 nanoparticles were deposited on the ZnO surface.

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