scholarly journals The Influence of Dimethyl Sulfoxide as Electrolyte Additive on Anodic Dissolution of Alkaline Zinc-Air Flow Battery

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Soraya Hosseini ◽  
Ali Abbasi ◽  
Luc-Olivier Uginet ◽  
Nicolas Haustraete ◽  
Supareak Praserthdam ◽  
...  
Keyword(s):  
Dimethyl Sulfoxide ◽  
Air Flow ◽  
Critical Role ◽  
Utilization Efficiency ◽  
Great Promise ◽  
Flow Battery ◽  
Debye Relaxation ◽  
Transfer Resistance ◽  
Zinc Surface ◽  
Zinc Dissolution

Abstract The present work describes the effects of dimethyl sulfoxide (DMSO) in KOH aqueous electrolyte on the performance of a zinc-air flow battery. Aqueous electrolytes containing 7 M KOH and (0 to 20)% v/v DMSO were studied revealing a critical role of DMSO on the dissolution and deposition of zinc. The anodic zinc dissolution process was studied via cyclic voltammetry, Tafel polarization and electrochemical impedance spectroscopy (EIS). The presence of DMSO showed improved zinc dissolution performance with the highest peak of zinc dissolution being the electrolyte containing 5% v/v DMSO. Tafel analysis demonstrated a significant decrease in polarization resistance and an increase in corrosion rate due to the introduction of DMSO to the electrolyte. This suggests that DMSO has the ability to suspend zinc oxide in the electrolyte, thus preventing passivation of the zinc surface. EIS results revealed that by adding DMSO to the electrolyte, charge transfer resistance increased. This is attributed to the formation of passive layers having arisen from DMSO adsorption, the formation of zincate ions in the vicinity of the zinc surface, and the deposition of discharged products. A difference in Nyquist plots was observed for 20% v/v DMSO/KOH and 0% v/v DMSO/KOH electrolytes implying non-Debye relaxation behavior taking place due to the surface effects. The electrolytes were implemented in a zinc-air flow battery. Maximum power densities of 130 mW/cm2 (5% v/v DMSO) and 125 mW/cm2 (20% v/v DMSO) were obtained and were observed to be about 43% and 28% higher than that of the DMSO-free electrolyte. Results indicated that when 20% v/v DMSO was added to KOH solution, there was 67% zinc utilization efficiency (550 mAh/g) which provided 20% improvement in discharge capacity. Further, the battery with 20% v/v DMSO demonstrated excellent cyclability. Overall, DMSO shows great promise for enhancement of zinc dissolution/deposition in zinc-air batteries.

scholarly journals Deciphering the Mounting Complexity of the p53 Regulatory Network in Correlation to Long Non-Coding RNAs (lncRNAs) in Ovarian Cancer

Cells ◽  
2020 ◽  
Vol 9 (3) ◽  
pp. 527 ◽  
Author(s):  
Sonali Pal ◽  
Manoj Garg ◽  
Amit Kumar Pandey
Keyword(s):  
Ovarian Cancer ◽  
Molecular Mechanisms ◽  
Human Cancer ◽  
Critical Role ◽  
Functional Characterization ◽  
Great Promise ◽  
Altered Expression ◽  
Disease Biology ◽  
Non Coding Rnas ◽  
Post Transcriptional Regulation

Amongst the various gynecological malignancies affecting female health globally, ovarian cancer is one of the predominant and lethal among all. The identification and functional characterization of long non-coding RNAs (lncRNAs) are made possible with the advent of RNA-seq and the advancement of computational logarithm in understanding human disease biology. LncRNAs can interact with deoxyribonucleic acid (DNA), ribonucleic acid (RNA), proteins and their combinations. Moreover, lncRNAs regulate orchestra of diverse functions including chromatin organization and transcriptional and post-transcriptional regulation. LncRNAs have conferred their critical role in key biological processes in human cancer including tumor initiation, proliferation, cell cycle, apoptosis, necroptosis, autophagy, and metastasis. The interwoven function of tumor-suppressor protein p53-linked lncRNAs in the ovarian cancer paradigm is of paramount importance. Several lncRNAs operate as p53 regulators or effectors and modulates a diverse array of functions either by participating in various signaling cascades or via interaction with different proteins. This review highlights the recent progress made in the identification of p53 associated lncRNAs while elucidating their molecular mechanisms behind the altered expression in ovarian cancer tumorigenesis. Moreover, the development of novel clinical and therapeutic strategies for targeting lncRNAs in human cancers harbors great promise.

High energy efficiency and high power density aluminum‐air flow battery

2020 ◽  
Vol 44 (9) ◽  
pp. 7568-7579 ◽  
Author(s):  
Hejing Wen ◽  
Zhongsheng Liu ◽  
Jia Qiao ◽  
Ronghua Chen ◽  
Ruijie Zhao ◽  
...  
Keyword(s):  
Energy Efficiency ◽  
Power Density ◽  
High Power ◽  
Air Flow ◽  
High Energy ◽  
High Power Density ◽  
Flow Battery ◽  
High Energy Efficiency

scholarly journals KIF15 Promotes Proliferation and Growth of Hepatocellular Carcinoma

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Yue-Feng Sun ◽  
Hong-Li Wu ◽  
Rui-Fang Shi ◽  
Lin Chen ◽  
Chao Meng
Keyword(s):  
Hepatocellular Carcinoma ◽  
Liver Cancer ◽  
Critical Role ◽  
Great Promise ◽  
Cell Processes ◽  
Multiple Cell ◽  
Molecular Therapeutic ◽  
Molecular Therapeutic Targets

Liver cancer is thought as the most common human malignancy worldwide, and hepatocellular carcinoma (HCC) accounts for nearly 90% liver cancer. Due to its poor early diagnosis and limited treatment, HCC has therefore become the most lethal malignant cancers in the world. Recently, molecular targeted therapies showed great promise in the treatment of HCC, and novel molecular therapeutic targets is urgently needed. KIF15 is a microtubule-dependent motor protein involved in multiple cell processes, such as cell division. Additionally, KIF15 has been reported to participate in the growth of various types of tumors; however, the relation between KIF15 and HCC is unclear. Herein, our study investigated the possible role of KIF15 on the progression of HCC and found that KIF15 has high expression in tumor samples from HCC patients. KIF15 could play a critical role in the regulation of cell proliferation of HCC, which was proved by in vitro and in vivo assays. In conclusion, this study confirmed that KIF15 could be a novel therapeutic target for the treatment of HCC.

scholarly journals The Critical Role of Supporting Electrolyte Selection on Flow Battery Cost

2017 ◽  
Vol 164 (14) ◽  
pp. A3883-A3895 ◽  
Author(s):  
Jarrod D. Milshtein ◽  
Robert M. Darling ◽  
Javit Drake ◽  
Michael L. Perry ◽  
Fikile R. Brushett
Keyword(s):  
Supporting Electrolyte ◽  
Critical Role ◽  
Flow Battery

Zinc dissolution in Leclanche electrolyte

1974 ◽  
Vol 27 (11) ◽  
pp. 2467 ◽  
Author(s):  
DB Matthews ◽  
PG Capps
Keyword(s):  
Corrosion Rate ◽  
Metallic Impurity ◽  
Cathodic Reaction ◽  
Electrolyte Layer ◽  
Zinc Surface ◽  
Diffusion Controlled ◽  
Layer 2 ◽  
Order Of Magnitude ◽  
Zinc Dissolution

The rate and morphology of zinc dissolution were studied in a Leclanche electrolyte of composition 0.5 mol dm-3 ZnCl2 and 5 mol dm-3 NH4Cl. A gelled electrolyte layer 2 x 10-3 m thick on the zinc surface was found to reduce the corrosion rate by an order of magnitude and to promote even dissolution. The corrosion results are interpreted in terms of a diffusion-controlled cathodic reaction involving O2 dissolution and metallic impurity deposition.

Non-Aqueous Primary Li-Air Flow Battery and Optimization of its Cathode through Experiment and Modeling

ChemSusChem ◽  
2017 ◽  
Vol 10 (21) ◽  
pp. 4198-4206 ◽  
Author(s):  
Byoungsu Kim ◽  
Kensuke Takechi ◽  
Sichao Ma ◽  
Sumit Verma ◽  
Shiqi Fu ◽  
...  
Keyword(s):  
Air Flow ◽  
Flow Battery
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