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- 저자 : Feng Jingnan (검색결과 2 건)
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PEO based polymer-ceramic hybrid solid electrolytes: a review
Feng Jingnan,Wang Li,Chen Yijun,Wang Peiyu,Zhang Hanrui,He Xiangming 나노기술연구협의회 2021 Nano Convergence Vol.8 No.2
Compared with traditional lead-acid batteries, nickel–cadmium batteries and nickel-hydrogen batteries, lithium-ion batteries (LIBs) are much more environmentally friendly and much higher energy density. Besides, LIBs own the characteristics of no memory effect, high charging and discharging rate, long cycle life and high energy conversion rate. Therefore, LIBs have been widely considered as the most promising power source for mobile devices. Commonly used LIBs contain carbonate based liquid electrolytes. Such electrolytes own high ionic conductivity and excellent wetting ability. However, the use of highly flammable and volatile organic solvents in them may lead to problems like leakage, thermo runaway and parasitic interface reactions, which limit their application. Solid polymer electrolytes (SPEs) can solve these problems, while they also bring new challenges such as poor interfacial contact with electrodes and low ionic conductivity at room temperature. Many approaches have been tried to solve these problems. This article is divided into three parts to introduce polyethylene oxide (PEO) based polymer-ceramic hybrid solid electrolyte, which is one of the most efficient way to improve the performance of SPEs. The first part focuses on polymer-lithium salt (LiX) matrices, including their ionic conduction mechanism and impact factors for their ionic conductivity. In the second part, the influence of both active and passive ceramic fillers on SPEs are reviewed. In the third part, composite SPEs’ preparation methods, including solvent casting and thermocompression, are introduced and compared. Finally, we propose five key points on how to make composite SPEs with high ionic conductivity for reference.
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zhang Jingnan,Wang Feng,Qu Gengbao,Wang Baokai 한국응용생명화학회 2021 Applied Biological Chemistry (Appl Biol Chem) Vol.64 No.2
Murrayanine and its derivatives have been shown to exhibit anticancer activities against different types of human cancer cells. However, the effects of murrayanine on the proliferation and metastasis of breast cancer cells are yet to be studied. The present study was designed to evaluate the effects of murrayanine on the proliferation and metastasis of human breast cancer via regulation of RANK/RANKL pathway. The results showed RANK/RANKL pathway to be highly activated in human breast cancer tissues and cell lines. However, treatment of the CAMA-1 breast cancer cells with murrayanine (0, 9, 18 and 36 μM) caused a significant (P < 0.05) decline in the expression of RANK, RANKL and OPG in CAMA-1 cells. Additionally, murrayanine inhibited the growth of CAMA-1 cells with an IC50 of 18 μM. The antiproliferative of murrayanine were found be due to its ability to inhibit the expression of RANK, RANKL and OPG in CAMA-1 cells. To unveil if murrayanine exerted its effects via inhibition of RANK/RANKL pathway, the expression of RNAK was knocked down in CAMA-1 cells. It was found that murrayanine and RANK silencing both inhibited the growth CAMA-1 cells via induction of apoptosis. Additionally, murrayanine and RANK silencing both inhibited the migration, invasion and epithelial to mesenchymal transition of the CAMA-1 cells. Taken together, murrayanine exhibits significant anticancer activity against the breast cancer cells via induction of apoptosis and inhibition of RANK/RANKL signaling pathway. These findings suggest that murrayanine may prove to be a beneficial lead molecule for the development of breast cancer chemotherapy.
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