A low-cost “water-in-salt” electrolyte for a 2.3 V high-rate carbon-based supercapacitor

2019 ◽  
Vol 7 (13) ◽  
pp. 7541-7547 ◽  
Author(s):  
Xudong Bu ◽  
Lijun Su ◽  
Qingyun Dou ◽  
Shulai Lei ◽  
Xingbin Yan
Keyword(s):  
High Voltage ◽  
Low Cost ◽  
High Rate ◽  
Promising Candidate ◽  
Low Viscosity ◽  
Carbon Based

With the advantages including wide ESW, superior conductivity, low viscosity and low cost, NaClO4-based WIS electrolyte can be considered as a promising candidate for high-voltage and high-rate aqueous carbon based SCs with good safety.

Developing high voltage Zn(TFSI)2 / Pyr14TFSI / AN hybrid electrolyte for carbon-based Zn ion hybrid capacitor

Nanoscale ◽  
2021 ◽  
Author(s):  
Li Zhang ◽  
ziqiang liu ◽  
gaowei wang ◽  
Jianze Feng ◽  
quanhu ma
Keyword(s):  
Energy Storage ◽  
High Voltage ◽  
Lithium Ion ◽  
Zinc Ion ◽  
Promising Candidate ◽  
Ion Energy ◽  
Storage Technology ◽  
Energy Storage Technology ◽  
Hybrid Capacitors ◽  
Carbon Based

Aqueous Zn-ion hybrid capacitors (ZIHCs), integrating the typical characteristics of Zinc ion batteries and supercapacitors, have become a promising candidate to replace or supplement lithium-ion energy storage technology. However, the...

Recent development of carbon-based materials as high-rate anode for sodium ion batteries

2021 ◽  
Author(s):  
Yi Sun ◽  
QiuJie Wu ◽  
Xin Liang ◽  
Hongfa Xiang
Keyword(s):  
Lithium Ion Batteries ◽  
Low Cost ◽  
Lithium Ion ◽  
Sodium Ion ◽  
High Rate ◽  
Sodium Ion Batteries ◽  
Carbon Based

Sodium ion batteries (SIBs) is considered as alternatives to lithium ion batteries (LIBs) due to the low cost and abundant resources reserve. Benefiting from many similarities to LIBs, SIBs are...

Defect engineering via the F-doping of β-MnO2 cathode to design hierarchical spheres of interlaced nanosheets for superior high-rate aqueous zinc ion batteries

2021 ◽  
Author(s):  
Seoyeong Kim ◽  
Bon-Ryul Koo ◽  
Yong-Ryun Jo ◽  
Ha-Rim An ◽  
Young-Geun Lee ◽  
...  
Keyword(s):  
Energy Storage ◽  
Low Cost ◽  
Zinc Ion ◽  
High Rate ◽  
Inherent Safety ◽  
Defect Engineering ◽  
Promising Candidate ◽  
Storage Technology ◽  
Energy Storage Technology ◽  
High Theoretical Capacity

The rechargeable aqueous Zn ion battery (ZIB) is a promising candidate for next-generation energy storage technology due to its low cost, low flammability, inherent safety, and high theoretical capacity. Nevertheless,...

Moxifloxacin Based Triple Therapy as Alternative to Standard Therapy in Helicobacter Pylori Eradication.

2020 ◽  
Vol 18 ◽  
Author(s):  
Mohammed Hussien Ahmed ◽  
Sherief Abd-Elsalam ◽  
Aya Mohammed Mahrous
Keyword(s):  
Helicobacter Pylori ◽  
Triple Therapy ◽  
Therapy Group ◽  
Low Cost ◽  
High Rate ◽  
Helicobacter Pylori Eradication ◽  
Treatment Regimens ◽  
Group A ◽  
H Pylori ◽  
Group B

Introduction: Helicobacter pylori eradication remains a problematic issue. We are in an urgent need for finding a treatment regimen that achieves eradication at a low cost and less side effect. Recent published results showing a high rate of resistance and with clarithromycin-based treatment regimens. The aim of the study was to compare moxifloxacin therapy and classic clarithromycin triple therapy in H. pylori eradication. Methods: This was a pilot study that enrolled 60 patients with helicobacter pylori associated gastritis. Diagnosis was done by assessment of H. pylori Ag in the stool. The patients were randomly assigned to receive either moxifloxacin based therapy (Group A), or clarithromycin based therapy (Group B) for two weeks. We stopped the treatment for another two weeks then reevaluation for cure was done. Results: 90 % of patients had negative H. pylori Ag in the stool after 2 weeks of stoppage of the treatment in group A versus 66.7 % in Group B. None of the patients in both groups had major side effects. Conclusion: Moxifloxacin-based therapy showed higher eradication power and less resistance when compared to clarithromycin triple therapy.

scholarly journals Defect and Doping Co-Engineered Non-Metal Nanocarbon ORR Electrocatalyst

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Jian Zhang ◽  
Jingjing Zhang ◽  
Feng He ◽  
Yijun Chen ◽  
Jiawei Zhu ◽  
...  
Keyword(s):  
Rational Design ◽  
Low Cost ◽  
Reduction Reaction ◽  
Defect Engineering ◽  
Heteroatom Doping ◽  
Competitive Activity ◽  
Design And Manufacturing ◽  
Earth Abundant ◽  
Induced Defects ◽  
Carbon Based

AbstractExploring low-cost and earth-abundant oxygen reduction reaction (ORR) electrocatalyst is essential for fuel cells and metal–air batteries. Among them, non-metal nanocarbon with multiple advantages of low cost, abundance, high conductivity, good durability, and competitive activity has attracted intense interest in recent years. The enhanced ORR activities of the nanocarbons are normally thought to originate from heteroatom (e.g., N, B, P, or S) doping or various induced defects. However, in practice, carbon-based materials usually contain both dopants and defects. In this regard, in terms of the co-engineering of heteroatom doping and defect inducing, we present an overview of recent advances in developing non-metal carbon-based electrocatalysts for the ORR. The characteristics, ORR performance, and the related mechanism of these functionalized nanocarbons by heteroatom doping, defect inducing, and in particular their synergistic promotion effect are emphatically analyzed and discussed. Finally, the current issues and perspectives in developing carbon-based electrocatalysts from both of heteroatom doping and defect engineering are proposed. This review will be beneficial for the rational design and manufacturing of highly efficient carbon-based materials for electrocatalysis.

Wastewater treatment high rate algal ponds (WWT HRAP) for low-cost biofuel production

2015 ◽  
Vol 184 ◽  
pp. 202-214 ◽  
Author(s):  
Abbas Mehrabadi ◽  
Rupert Craggs ◽  
Mohammed M. Farid
Keyword(s):  
Wastewater Treatment ◽  
Low Cost ◽  
Biofuel Production ◽  
High Rate ◽  
High Rate Algal Ponds

High Voltage Subsea Pump – A Low Cost Subsea Boosting Enabler

2017 ◽  
Author(s):  
A. Margarida ◽  
J. Pimentel ◽  
E. Thibaut ◽  
E. Cardoso
Keyword(s):  
High Voltage ◽  
Low Cost

scholarly journals Antioxidant Determination with the Use of Carbon-Based Electrodes

Chemosensors ◽  
2021 ◽  
Vol 9 (4) ◽  
pp. 72
Author(s):  
Aurelia Magdalena Pisoschi ◽  
Aneta Pop ◽  
Florin Iordache ◽  
Loredana Stanca ◽  
Liviu Bilteanu ◽  
...  
Keyword(s):  
Surface Area ◽  
Oxidation Process ◽  
Low Cost ◽  
Oxidative Enzymes ◽  
Adaptation Mechanisms ◽  
Chain Breaking ◽  
Nanomolar Range ◽  
Quench Singlet Oxygen ◽  
Carbon Based

Antioxidants are compounds that prevent or delay the oxidation process, acting at a much smaller concentration, in comparison to that of the preserved substrate. Primary antioxidants act as scavenging or chain breaking antioxidants, delaying initiation or interrupting propagation step. Secondary antioxidants quench singlet oxygen, decompose peroxides in non-radical species, chelate prooxidative metal ions, inhibit oxidative enzymes. Based on antioxidants’ reactivity, four lines of defense have been described: Preventative antioxidants, radical scavengers, repair antioxidants, and antioxidants relying on adaptation mechanisms. Carbon-based electrodes are largely employed in electroanalysis given their special features, that encompass large surface area, high electroconductivity, chemical stability, nanostructuring possibilities, facility of manufacturing at low cost, and easiness of surface modification. Largely employed methods encompass voltammetry, amperometry, biamperometry and potentiometry. Determination of key endogenous and exogenous individual antioxidants, as well as of antioxidant activity and its main contributors relied on unmodified or modified carbon electrodes, whose analytical parameters are detailed. Recent advances based on modifications with carbon-nanotubes or the use of hybrid nanocomposite materials are described. Large effective surface area, increased mass transport, electrocatalytical effects, improved sensitivity, and low detection limits in the nanomolar range were reported, with applications validated in complex media such as foodstuffs and biological samples.

New Gel Aggregates To Improve Sweep Efficiency During Waterflooding

2011 ◽  
Vol 14 (01) ◽  
pp. 120-128 ◽  
Author(s):  
Guanglun Lei ◽  
Lingling Li ◽  
Hisham A. Nasr-El-Din
Keyword(s):  
Low Cost ◽  
Oil Production ◽  
High Water ◽  
Resistance Factor ◽  
Water Production ◽  
Sweep Efficiency ◽  
Low Viscosity ◽  
Productivity Decline ◽  
High Water Cut ◽  
Water Cut

Summary A common problem for oil production is excessive water production, which can lead to rapid productivity decline and significant increases in operating costs. The result is often a premature shut-in of wells because production has become uneconomical. In water injectors, the injection profiles are uneven and, as a result, large amounts of oil are left behind the water front. Many chemical systems have been used to control water production and improve recovery from reservoirs with high water cut. Inorganic gels have low viscosity and can be pumped using typical field mixing and injection equipment. Polymer or crosslinked gels, especially polyacrylamide-based systems, are mainly used because of their relatively low cost and their supposed selectivity. In this paper, microspheres (5–30 μm) were synthesized using acrylamide monomers crosslinked with an organic crosslinker. They can be suspended in water and can be pumped in sandstone formations. They can plug some of the pore throats and, thus, force injected water to change its direction and increase the sweep efficiency. A high-pressure/high-temperature (HP/HT) rheometer was used to measure G (elastic modulus) and G" (viscous modulus) of these aggregates. Experimental results indicate that these microspheres are stable in solutions with 20,000 ppm NaCl at 175°F. They can expand up to five times their original size in deionized water and show good elasticity. The results of sandpack tests show that the microspheres can flow through cores with permeability greater than 500 md and can increase the resistance factor by eight to 25 times and the residual resistance factor by nine times. The addition of microspheres to polymer solutions increased the resistance factor beyond that obtained with the polymer solution alone. Field data using microspheres showed significant improvements in the injection profile and enhancements in oil production.

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