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Anion-induced electrolyte chemistry enables high energy density primary battery for ultralow-temperature conditions

Science China Chemistry 2024年

作者： Zi-Hang Xue Hao-Jie Liang Yong-Li Heng Jia-Lin Yang Edison Huixiang Ang Hong-Yan Lü Hong Yu dong-mei dai dai-Huo Liu Chuan-Yu Zheng Wei Guo Xing-Long Wu Department of Chemistry Northeast Normal University MOE Key Laboratory for UV Light-Emitting Materials and Technology Northeast Normal University Natural Sciences and Science Education National Institute of Education Nanyang Technological University State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal Materials Northwestern Polytechnical University School of Chemistry and Chemical Engineering Henan Normal University Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province Gannan Normal University

Lithium/fluorinated-carbon（Li/CFx） primary batteries are widely used in defense and military fields due to their stable discharge plateau, low self-discharge rate, and adaptability across a wide temperature range. However, enhancing their overall energy density and discharge capacity at low temperatures remains a critical challenge. Herein, we report a strategically designed LiBF4-based sulfite/carboxylate electrolyte, where the anion-involved solvation structure significantly enhances electrochemical kinetics by reducing the desolvation barrier. Simultaneously, it introduces a radical reaction mechanism that contributes to additional capacity. As a result, the Li/CFxprimary batteries with this formulated electrolyte deliver a specific capacity of 2,257.15 mAh g-1at 25 °C. More importantly, when operating at -40 °C, the batteries exhibit an exceptionally high discharge capacity of 1,549.4 m Ah g-1and an energy density of 2,868.6 Wh kg-1. Even at -60 °C, the Li/CFxcells achieve a specific capacity of 444.3 mAh g-1and an energy density of 821.8 Wh kg-1at 0.1 C, significantly outperforming previously reported organic-based liquid electrolytes. This work offers a viable strategy for enhancing the specific capacity and energy density of primary batteries in extreme environments, providing valuable insights for future developments.

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Preparation, characterization and photocatalytic activity of N-doped TiO_2 nanocrystals

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International Journal of Minerals,Metallurgy and Materials 2009年第6期16卷 701-706页

作者： Hong-tao Gao Jing Zhou dong-mei dai Guang-jun Liu College of Chemistry and Molecular Engineering Qingdao University of Science ＆ Technology Qingdao 266042 China Department of Chemistry Jining University Jining 273155 China

N-doped TiO2 nanocrystals were prepared using titanium alkoxide as precipitant with different proportional materials. The products were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and UV-vis diffuse reflectance spectra. It is confirmed experimentally that the photocatalytic activity of N-doped TiO2 is much higher than that of Degussa P25, when used for the degradation of crystal violet. The degradation kinetics follows an apparent first-order reaction, which is consistent with a generally observed Langmuir-Hinshelwood mechanism. The doping of TiO2 with nitrogen significantly increases the absorption in the region of visible light. The energy of the band gap of N-doped TiO2 is 2.92 eV. The better performance of N-doped TiO2 can be explained by the fact that it is also excited with longer-wavelength light.

关键词： pbotocatalyst degradation nitrogen doping TiO2 nanocrystals visible light crystal violet

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A novel trilinear decomposition algorithm:Three-dimension non-negative matrix factorization

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Chinese Chemical Letters 2007年第4期18卷 495-498页

作者： Hong Tao Gao dong mei dai Tong Hua Li College of Chemistry and Molecular Engineering Qingdao University of Science ＆ Technology Qingdao 266042 China Department of Chemistry Jining Teachers College Jining 273100 China Department of Chemistry Tongji University Shanghai 200092 China

Non-negative matrix factorization （NMF） is a technique for dimensionality reduction by placing non-negativity constraints on the matrix. Based on the PARAFAC model, NMF was extended for three-dimension data decomposition. The three-dimension nonnegative matrix factorization （NMF3） algorithm, which was concise and easy to implement, was given in this paper. The NMF3 algorithm implementation was based on elements but not on vectors. It could decompose a data array directly without unfolding, which was not similar to that the traditional algorithms do, It has been applied to the simulated data array decomposition and obtained reasonable results. It showed that NMF3 could be introduced for curve resolution in chemometrics.

关键词： Three-dimension non-negative matrix factorization NMF3 Algorithm Data decomposition Chemometrics

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Synthesis,characterization,and theoretical study of N,S-codoped nano-TiO_2 with photocatalytic activities

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International Journal of Minerals,Metallurgy and Materials 2011年第5期18卷 606-614页

作者： Hong-tao Gao Yuan-yuan Liu Cui-hong Ding dong-mei dai Guang-jun Liu State Key Laboratory of Crystal materials Shandong University Jinan 250100 China College of Chemistry and Molecular Engineering Qingdao University of Science and Technology Qingdao 266042 China Department of Chemistry and Chemical Engineering Jining University Qufu 273155 China

Nitrogen and sulfur doped titanium dioxide photocatalysts were prepared by the sol-gel *** products were characterized by X-ray diffraction （XRD）,transmission electron microscopy （TEM）,and UV-visible diffuse reflectance spectra （DRS）.Photocatalytic activities of the samples were investigated on the degradation of methyl orange （MO）.The effect of the dopants on the electronic structure of TiO2 was studied by the first-principles calculations based on the density functional theory （DFT）.The orbital hybridization resulted in energy gap narrowing and electronic delocalization in the crystal of doped *** electrons of varied energetic states could offer enhanced electron transfer,together with optical absorption *** results show that the doping elements of N and S play a cooperative role in the modification of electronic structure,which enhances the photocatalytic *** experimentally observed absorption edges of N-doped TiO2,S-doped TiO2,and N,S-codoped TiO2 are 420,413,and 429 nm,respectively,which can be explained by the theoretical calculation results.

关键词： titanium dioxide doping electronic structure red shift photocatalysis nanoparticles

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Research on Alliance Decision of Dual-Channel Remanufacturing Supply Chain Considering Bidirectional Free-Riding and Cost-Sharing

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Computer Modeling in Engineering & Sciences 2024年第9期140卷 2913-2956页

作者： Lina dong Yeming dai School of Business Qingdao UniversityQingdaoChina

This study delves into the formation dynamics of alliances within a closed-loop supply chain(CLSC)that encom-passes a manufacturer,a retailer,and an e-commerce *** leverages Stackelberg game for this exploration,contrasting the equilibrium outcomes of a non-alliance model with those of three differentiated alliance *** non-alliance model acts as a crucial benchmark,enabling the evaluation of the motivations for various supply chain entities to engage in alliance *** analysis is centered on identifying the most effective alliance strategies and establishing a coordination within these *** thoroughly investigate the consequences of diverse alliance behaviors,bidirectional free-riding and cost-sharing,and the resultant effects on the optimal decision-making among supply chain *** findings underscore several pivotal insights:(1)The behavior of alliances within the supply chain exerts variable impacts on the optimal pricing and demand of its *** comparison to the non-alliance(D)model,the manufacturer-retailer(MR)and manufacturer-e-commerce platform(ME)alliances significantly lower both offline and online resale prices for new and remanufactured *** adjustment leads to an enhanced demand for products via the MR alliance’s offline outlets and the ME alliance’s online platforms,thereby augmenting the profits for those within the ***,retailer-e-commerce platform(ER)alliance tends to increase the optimal retail price and demand across both online and offline *** specific conditions,alliance behavior can also increase the profits of non-alliance members,and the profits derived through alliance channels also exceed those from non-alliance channels.(2)The prevalence of bidirectional free-riding behavior largely remains constant across different alliance *** these models,bidirectional free-riding typically elevates the equilibrium prices in offline channel while negatively affe

关键词： Dual-channel remanufacturing supply chain alliance remanufactured products bidirectional free-riding cost-sharing

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Bidirectional effects of the tryptophan metabolite indole-3-acetaldehyde on colorectal cancer

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World Journal of Gastrointestinal Oncology 2024年第6期16卷 2697-2715页

作者： Ze dai Kai-Li Deng Xiao-mei Wang dong-Xue Yang Chun-Lan Tang Yu-Ping Zhou Department of Gastroenterology The First Affiliated Hospital of Ningbo UniversityNingbo 315020Zhejiang ProvinceChina Health Science Center Ningbo UniversityNingbo 315211Zhejiang ProvinceChina School of Traditional Chinese Medicine Southern Medical UniversityGuangzhou 510515Guangdong ProvinceChina Institute of Digestive Disease of Ningbo University Ningbo UniversityNingbo 315020Zhejiang ProvinceChina Ningbo Key Laboratory of Translational Medicine Research on Gastroenterology and Hepatology Ningbo Key LaboratoryNingbo 315020Zhejiang ProvinceChina

BACKGROUND Colorectal cancer(CRC)has a high incidence and *** studies have shown that indole derivatives involved in gut microbiota metabolism can impact the tumorigenesis,progression,and metastasis of *** To investigate the effect of indole-3-acetaldehyde(IAAD)on *** The effect of IAAD was evaluated in a syngeneic mouse model of CRC and CRC cell lines(HCT116 and DLD-1).Cell proliferation was assessed by Ki-67 fluorescence staining and cytotoxicity *** apoptosis was analysed by flow cytometry after staining with Annexin V-fluorescein isothiocyanate and propidium *** was investigated using the transwell *** blotting and real-time fluorescence quantitative polymerase chain reaction were performed to evaluate the expression of epithelial-mesenchymal transition related genes and aryl hydrocarbon receptor(AhR)downstream *** PharmMapper,SEA,and SWISS databases were used to screen for potential target proteins of IAAD,and the core proteins were identified through the String *** IAAD reduced tumorigenesis in a syngeneic mouse *** CRC cell lines HCT116 and DLD1,IAAD exhibited cytotoxicity starting at 24 h of treatment,while it reduced Ki67 expression in the *** results of flow cytometry showed that IAAD induced apoptosis in HCT116 cells but had no effect on DLD1 cells,which may be related to the activation of *** can also increase the invasiveness and epithelial-mesenchymal transition of HCT116 and DLD1 *** low concentrations(<12.5μmol/L),IAAD only exhibited cytotoxic effects without promoting cell *** addition,predictions based on online databases,protein-protein interaction analysis,and molecular docking showed that IAAD can bind to matrix metalloproteinase-9(MMP9),angiotensin converting enzyme(ACE),poly(ADP-ribose)polymerase-1(PARP1),matrix metalloproteinase-2(MMP2),and myeloperoxidase(MPO).CONCLUSION Indole-3-aldehyde can induce cell apoptosis and inhibit cell prol

关键词： Indole-3-acetaldehyde Colorectal cancer Tryptophan metabolism Apoptosis Epithelial-mesenchymal transition

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Defect Detection in c-Si Photovoltaic Modules via Transient Thermography and Deconvolution Optimization

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Chinese Journal of Electrical Engineering 2024年第1期10卷 3-11页

作者： Zekai Shen Hanqi dai Hongwei mei Yanxin Tu Liming Wang State Grid Hangzhou Power Supply Company State Grid Zhejiang Electric Power Co.Ltd.Hangzhou 310000China Huairou Power Supply Branch State Grid Beijing Electric Power Co.Ltd.Beijing 101400China Tsinghua Shenzhen International Graduate School Tsinghua UniversityShenzhen 518055China

Defects may occur in photovoltaic(PV)modules during production and long-term use,thereby threatening the safe operation of PV power *** thermography is a promising defect detection technology;however,its detection is limited by transverse thermal *** phenomenon is particularly noteworthy in the panel glasses of PV modules.A dynamic thermography testing method via transient thermography and Wiener filtering deconvolution optimization is *** on the time-varying characteristics of the point spread function,the selection rules of the first-order difference image for deconvolution are *** with a broken grid and artificial cracks were tested to validate the performance of the optimization *** with the feature images generated by traditional methods,the proposed method significantly improved the visual *** defect size detection can be realized by combining the deconvolution optimization method with adaptive threshold *** the same batch of PV products,the detection error could be controlled to within 10%.

关键词： Photovoltaic module transient thermography point spread function deconvolution optimization quantitative detection

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Local search yields a PTAS for fixed-dimensional k-means problem with penalties

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Journal of the Operations Research Society of China 2024年第2期12卷 351-362页

作者： Fan Yuan Da-Chuan Xu dong-Lei Du dong-mei Zhang Beijing Institute for Scientific and Engineering Computing Beijing University of TechnologyBeijing 100124China Faculty of Management University of New BrunswickFrederictonNB E3B 9Y2Canada School of Computer Science and Technology Shandong Jianzhu UniversityJinan 250101ShandongChina

We study a problem called the k-means problem with penalties(k-MPWP),which is a natural generalization of the typical k-means *** this problem,we have a set D of client points in R^(d),a set F of possible centers in R^(d),and a penalty cost Pj>O for each point j∈*** are also given an integer k which is the size of the center point *** want to find a center point set S■F with size k,choose a penalized subset of clients P■D,and assign every client in D\P to its open *** goal is to minimize the sum of the squared distances between every point in D\P to its assigned centre point and the sum of the penalty costs for all clients in *** using the multi-swap local search technique and under the fixed-dimensional Euclidean space setting,we present a polynomial-time approximation scheme(PTAS)for the k-MPWP.

关键词： Approximation algorithm k-means Local search Penalty

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Control of aluminum distribution in ZSM-5 zeolite for enhancement of its catalytic performance for propane aromatization

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Frontiers of Chemical Science and Engineering 2024年第8期18卷 15-24页

作者： Zhao Ma Dezhi Shi Sen Wang mei dong Weibin Fan State Key Laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China University of Chinese Academy of Sciences Beijing 100049China

Regulation of aluminum distribution in zeolite framework is an effective method for improving its catalytic performance for propane ***,we found that recrystallization and post-realuminization of ZSM-5 cannot only create hollow structures to enhance the diffusion ability,but also adjust the content and position of paired aluminum species in its *** characterizations results confirmed that increase of paired aluminum content and inducement of more aluminum atoms sited in the intersection cavity are beneficial to the formation of aromatic products in propane *** a result,the hollow-structured ZSM-5 zeolite with more paired aluminum(H-200-hollow)showed higher propane conversion and aromatics selectivity than other samples at the same *** catalytic performance of H-200-hollow can be further improved by ion-exchanging with a small amount of Ga(III)*** propane conversion and aromatics selectivity of Ga-200-hollow reached as high as 95%and 70%,respectively,at 540°C and 1 atm.

关键词： propane aromatization zeolite aluminum distribution recrystallization and post-realuminization

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Correlation between postoperative chemotherapy regimen and survival in patients with resectable gastric adenocarcinoma accompanied with vascular cancer thrombus

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World Journal of Gastrointestinal Surgery 2024年第6期16卷 1618-1628页

作者： Ze-Feng Yang Zhuan-Xia dong Chen-Jie dai Li-Zheng Fu Hong-mei Yu Yu-Sheng Wang Department of Health Statistics School of Public HealthShanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina Shanxi Medical University Taiyuan 030001Shanxi ProvinceChina Shanxi Provincial Key Laboratory of Major Diseases Risk Assessment Taiyuan 030001Shanxi ProvinceChina MOE Key Laboratory of Coal Environmental Pathogenicity and Prevention Shanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina Department of Oncology Digestive The First Hospital of Shanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina Department of Digestive Oncology Shanxi Province Cancer Hospital/Shanxi Hospital Affiliated to Cancer HospitalChinese Academy of Medical Sciences/Cancer Hospital Affiliated to Shanxi Medical UniversityTaiyuan 030001Shanxi ProvinceChina

BACKGROUND Patients with resectable gastric adenocarcinoma accompanied by vascular cancer thrombus(RGAVCT)have a poor prognosis,with a 5-year survival rate ranging from 18.42%-53.57%.These patients need a reasonable postoperative treatment plan to improve their *** To determine the most effective postoperative chemotherapy regimen for patients with *** We retrospectively collected the clinicopathological data of 530 patients who un-derwent radical resection for gastric cancer between January 2017 and January 2022 and who were pathologically diagnosed with gastric adenocarcinoma with a choroidal cancer ***-thermore,we identified the high-risk variables that can influence the prognosis of patients with RGAVCT by asse-ssing the clinical and pathological features of the patients who met the inclusion *** also assessed the significance of survival outcomes using Mantel-Cox univariate and multivariate *** subgroups of pa-tients with stages Ⅰ,Ⅱ,and Ⅲ disease who received single-,dual-,or triple-drug regimens following surgery were analyzed using SPSS 25.0 and the ggplot2 package in R *** In all,530 eligible individuals with RGAVCT were enrolled in this *** median overall survival(OS)of patients with RGAVCT was 24 months,and the survival rates were 80.2%,62.5%,and 42.3%at 12,24,and 59 months,*** complications,tumor size,T stage,and postoperative chemotherapy were identified as independent factors that influenced OS in patients with RGAVCT according to the Cox multivariate analysis model.A Kaplan-meier analysis revealed that chemotherapy had no effect on OS of patients with stage Ⅰ or Ⅱ RGAVCT;however,chemotherapy did have an effect on OS of stage Ⅲ *** Ⅲ patients who were treated with chemotherapy consisting of dual-or triple-agent regimens had better survival than those treated with single-agent regimens,and no significant difference was observed in the survival of patients treat

关键词： Vascular cancer embolism Postoperative chemotherapy regimen Gastric adenocarcinoma Risk factors Survival

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