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Research progress on carbon materials as negative electrodes in sodium-and potassium-ion batteries

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Carbon Energy 2022年第6期4卷 1182-1213页

作者： Yang-yang Zhu yu-hua wang Yi-tong wang Tian-jie Xu Pei Chang Hubei Province Key Laboratory of Science in Metallurgical Process College of ScienceWuhan University of Science and TechnologyWuhanChina

Carbon materials,including graphite,hard carbon,soft carbon,graphene,and carbon nanotubes,are widely used as high-performance negative electrodes for sodium-ion and potassium-ion batteries(SIBs and PIBs).Compared with other materials,carbon materials are abundant,low-cost,and environmentally friendly,and have excellent electrochemical properties,which make them especially suitable for negative electrode materials of SIBs and *** with traditional carbon materials,modifications of the morphology and size of nanomaterials represent effective strategies to improve the quality of electrode *** nanostructures make different contributions toward improving the electrochemical performance of electrode materials,so the synthesis of nanomaterials is promising for controlling the morphology and size of electrode *** paper reviews the progress made and challenges in the use of carbon materials as negative electrode materials for SIBs and PIBs in recent *** differences in Na+and K+storage mechanisms among different types of carbon materials are emphasized.

关键词： carbon material graphene hard carbon negative electrode sodium/potassium-ion batteries

Flux enhancement during ultrafiltration of produced water using turbulence promoter

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Journal of Environmental Sciences 2006年第6期18卷 1077-1081页

作者： ZHEN Xiang-hua yu Shui-li wang Bei-fu ZHENG Hai-feng School of Municipal and Environmental Engineering Harbin Institute of Technology Harbin 150090 China

Concentration polarization and membrane fouling remain one of the major hurdles for the implementation of ultrafiltration of produced water. Although many applications for ultrafiltration were already suggested, only few were implemented on an industrial scale. Among those techniques, turbulence promoter can be more simple and effective in overcoming membrane fouling and enhancing membrane flux. As for the result that turbulence promoter increase fluid velocity, wall shear rates and produce secondary flows or instabilities, the influence of turbulence promoter was investigated on permeate flux during produced water ultrafiltration and the potential application of this arrangement for an industrial development. Experimental investigations were performed on 100 KDa molecular weight cut-off PVDF single-channel tubular membrane module using four kinds of turbulence promoters. It is observed that the significant flux enhancement in the range of 83%--164% was achieved while the hydraulic dissipated power per unit volume of permeate decreased from 31%--42%, which indicated that the using of turbulence promoter is more efficient than operation without the turbulence promoter. The effects of transmembrane pressure and cross-flow velocity with and without turbulence promoter were studied as well. Among the four kinds of turbulence promoters, winding inserts with 20.0 mm pitch and 1.0 mm wire diameter showed better performances than the others did.

关键词： hydraulic dissipated power flux enhancement turbulence promoter produced water ultrafiltration

Third-order nonlinear optical properties of graphene composites:A review

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Chinese Physics B 2021年第8期30卷 120-131页

作者： Meng Shang Pei-Ling Li yu-hua wang Jing-Wei Luo Hubei Province Key Laboratory of Science in Metallurgical Process Wuhan University of Science and TechnologyWuhan 430081 China

Graphene has excellent thirdorder nonlinear optical(NLO)properties due to its unique electronic band structure and wideband gap *** paper focuses on the research progress of graphene and its composite materials in nonlinear optics in recent *** this review,recent results on graphene(or graphene oxide)-metal nanoparticles(G-MNPs),graphene-metal-oxide nanoparticles(G-MONPs),graphene-metal sulfide nanoparticles(G-MSNPs),and graphene-organic molecular composites(G-OM)have been *** addition,the enhancement mechanism of nonlinear absorption(NLA)and optical limiting(OL)have also been covered.

关键词： graphene composites nonlinear optics optical limiting enhancement

Improvement of the Injection and Transport Characteristics of Electrons in Organic Light-Emitting Diodes by Utilizing a NaC1 N-Doped Layer

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Chinese Physics Letters 2014年第4期31卷 178-181页

作者： XIAO Zhi-Hui WU Xiao-Ming hua yu-Lin wang Li BI Wen-Tao BAI Juan-Juan MU Xue YIN Shou-Gen School of Materials Science and Engineering Tianjin University of Technology Tianjin 300384Key Laboratory of Display Materials and Photoelectric Devices .Ministry of Education Tianjin 300384 Tianjin Key Laboratory of Photoelectric Materials and Devices Tianjin 300384

The injection and transport characteristics of electrons are enhanced by using sodium chloride （NaC1） as an n-type dopant doped into a 4, 7-diphnenyl-1, lO-phe-nanthroline （Bphen） electron-transporting layer, which improves the performance of organic light-emitting diodes （OLEDs）. Meanwhile, a NaCl-doped Bphen layer can effectively influence electrical characteristics of the devices, and significantly improve the current and power efficiency. The turn-on voltage and the operation voltage of the optimal device are decreased drastically from 6.5 V and 10.8 V to 3.3 V and 5 V, respectively, compared with those of the reference device. The maximum current efficiency and power efficiency of the optimal device are 7.0 cd/A and 4.4 Im/W at the current density of 16.70 mA/cm~, which are about I. 7 and 4 times higher than those of the reference device, respectively. Moreover, the enhancement of the injection and transport ability for electrons is attributed not only to the reduced energy barrier between A1 cathode and Bphen, but also to the increased mobility of electrons by the doping effect of NaCl. Therefore, both the electron injection and transport ability are enhanced, which improve the carrier balance in OLEDs and lead to the better device efficiency.

关键词： ORGANIC light emitting diodes SALT DOPING agents (Chemistry) ENERGY consumption ELECTRON mobility

Inducible nitric oxide synthase and Fas/FasL with C3 expression of mouse retinal pigment epithelial ceils in response to stimulation by peroxynitrite and antagonism of puerarin

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Chinese Medical Journal 2011年第16期124卷 2522-2529页

作者： HAO Li-na ZHANG Yan-qing SHEN yu-hua wang Zhi-yun wang Yan-hua Department of Ophthalmology Hebei Province People's HospitalShijiazhuang Hebei 050051 China

Background Retinal pigment epithelial （RPE） cell is a monolayer of multifunctional cells between the retina and the choroid. Peroxynitrite （ONOO-） is known to induce toxicity on RPE cells. This study aimed to evaluate ONOO- induced expression of inducible nitric oxide synthase （iNOS） and complement 3 （C3） via Fas/FasL pathway in RPE cells and the values of puerarin as a therapeutic target for inhibiting the apoptosis of RPE cells. Methods RPE cells were obtained from eyes of C57BL/6 mice. RPE cells were divided into control, ONOO-and puerarin groups. Control group was treated with saline, ONOO-group was treated with ONOO-, and puerarin group was treated with puerarin after added with ONOO-. All changes were observered at 6, 12 and 24 hours after treatment. Western blotting analysis was used to determine the expression of nitrotyrosine （NT, the foot print of ONOO-） and C3; flow cytometry was used to determine the apoptosis of RPE cells. Immunohistochemistry and Western blotting were used to determine Fas/FasL signal transduction. Gene array analysis, reverse transcription polymerase chain reaction （RT-PCR） and Western blotting were used to determine the expression of iNOS mRNA and iNOS protein in RPE cells. Results There were minor expression of NT, C3, Fas/FasL and iNOS mRNA in control group, and strong expression of NT and C3 in ONOO- group, while in puerarin group weak expressions of NT and C3 were detected as time passed by （P 〈0.001）. Apoptosis of RPE cells occured and reached a higher level at 6 and 24 hours after addition of ONOO- respectively in ONOO- group, but delayed apoptosis in puerarin group （P 〈0.05）. Compared to control group, the expression of Fas/FasL was up-regulated in ONOO- group, but was down-regulated in puerarin group （P 〈0.001）. Similarly, the expressions of iNOS mRNA and iNOS protein in ONOO-group were up-regulated in ONOO- group, but down-regulated in puerarin group （P 〈0.001）. Conclusions ONOO- expresseion in RPE cells may constitute the n

关键词： retinal pigment epithelial cells oxidative cell signal complement puerarin

Biomedical Image Processing Using FCM Algorithm Based on the Wavelet Transform

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Journal of Wuhan University of Technology(Materials Science) 2004年第3期19卷 18-20页

作者：闫玉华 Wuhan University of Technology

An effective processing method for biomedical images and the Fuzzy C-mean (FCM) algorithm based on the wavelet transform are *** using hierarchical wavelet decomposition, an original image could be decomposed into one lower image and several detail images. The segmentation started at the lowest resolution with the FCM clustering algorithm and the texture feature extracted from various sub-bands. With the improvement of the FCM algorithm, FCM alternation frequency was decreased and the accuracy of segmentation was advanced.

关键词： biomedical image processing FCM algorithm wavelet transform texture feature

FRACTAL ANALYSIS OF CATALYST NiO/α-Al2O3

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Journal of Energy Chemistry 1995年第4期 434-438页

作者： ZHOU Yong-Chao yu hua-Gen wang hua-Ming CHENG Ji-yuanChengdu Institute of Organic Chemistry, Academia Sinica Chengdu, Sichuan 610015

We found that the Freundlich formula H=kCcan be used todescribe the isothermal adsorption curve of support α-AlOwith fractalstructures in nickel nitrate *** n is relative to the surface fractaldimension D of α-AlO.

关键词： fractal adsorption dimension catalyst NiO/α-Al2O3

A preliminary report on soil dematiaceous hyphomycetes from the three river gorge regions in eastern Tibet

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菌物学报 2008年第1期27卷 39-47页

作者： GENG yue-hua ZHANG Tian-yu wang Hong-Feng Department of Plant Pathology Shandong Agricultural University Tai ＇an 271018 China

A total of 47 isolates of soil dematiaceous hyphomycetes belonging to 29 species in 15 genera were found from the gorge regions of three rivers (the Jinsha River, the Nu River and the Lantsang River) in eastern Tibet. Most of the genera and species found are new for the regions. Among them Eladia tibetensis is a new species, and Scytalidium acidophilum and S. circinatum are new records to China. Latin description is given for the new species. Brief descriptions and illustrations of the new records are also given based on Chinese isolates. The other 26 species being previously known from China in several genera are also listed. Dried cultures and living cultures studied have been deposited in Herbarium of Shandong Agricultural University: Plant Pathology (HSAUP).

关键词：三江峡谷地带西藏土壤真菌中国新种新记录生物学特征暗色丝孢菌

Effects of HepⅡ domain peptides Ⅴ of fibronectin on corneal permeability, endothelial cells, intraocular pressure and morphology of trabecular meshwork in rats

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Chinese Medical Journal 2011年第13期124卷 2015-2020页

作者： ZHANG Qing-wei wang Ning-li LIU Xu-yang CHEN Feng-hua LI Ping-yu wang Xiao-zhen Tongren Eye Center Beijing Tongren Hospital Capital MedicalUniversity Beijing 100730 China

Background Trabecular meshwork （TM） cell volume may be an important determinant of aqueous humor outflow in the eye. This study aimed to evaluate the role of Hepll domain peptides V on corneal permeability, corneal endothelial cells, intraocular pressure （lOP） and morphology of trabecular meshwork in rats. Methods The lOP of rat eyes was measured before and 3, 5, 7 and 8 hours after topical delivery of Hepll domain peptides V through intracameral injections. The peptide＇s concentration in aqueous humor was assessed by high performance liquid chromatography （HPLC）. The shape and density of endothelial cells were observed by laser confocal microscopy 8 hours, 3 and 14 days after intracameral injections of Hepll domain peptides V. The morphological changes in TM of rat eyes were assessed by transmission electron microscopy （TEM）. Results Intracameral injection of Hepll domain peptides V significantly （P 〈0.001） decreased lOP by （5.71±2.10） mmHg in rats at 5 hours after injection. There were no obvious changes of the shape and the density of corneal endothelial cells. In addition, morphological changes in the TM of rats were observed including the expansion of intercellular spaces in the juxtacanalicular meshwork, removal of extracellular material, cellular relaxation, and cytoskeleton reorganization. Conclusions Hepll domain peptides V could not penetrate cornea and was safe to corneal endothelial cells. Hepll domain peptides V could significantly decrease lOP in rat probably by disorganizing actin cytoskeleton and cell-junction in the TM.

关键词： HepH domain peptides V intraocular pressure rat eyes trabecular meshwork high performance liquid chromatography laser confocal microscopy