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Spray pyrolysis feasibility of tungsten substitution for cobalt in nickel-rich cathode materials

International Journal of Minerals,Metallurgy and Materials 2024年第10期31卷 2244-2252页

作者： Zihan Hou Lisheng Guo Xianlong Fu Hongxian Zheng Yuqing Dai zhixing wang Hui Duan Mingxia Dong Wenjie Peng Guochun Yan Jiexi wang Key Laboratory of Value-added Metallurgy of Hunan Province Engineering Research Center of the Ministry of Education for Advanced Battery MaterialsSchool of Metallurgy and EnvironmentCentral South UniversityChangsha 410083China BASF Shanshan Battery Materials Co.Ltd. Changsha 410205China

Cobalt(Co)serves as a stabilizer in the lattice structure of high-capacity nickel(Ni)-rich cathode ***,its high cost and toxicity still limit its *** general,it is possible to perform transition metal substitution to reduce the Co ***,the traditional coprecipitation method cannot satisfy the requirements of multielement coprecipitation and uniform distribution of elements due to the differences between element concentration and deposition *** this work,spray pyrolysis was used to prepare LiNi_(0.9)Co_(0.1-x)W_(x)O_(2)(LNCW).In this regard,the pyrolysis behavior of ammonium metatungstate was analyzed,together with the substitu-tion of W for *** the possibility of spray pyrolysis,the Ni-Co-W-containing oxide precursor presents a homogeneous distribution of metal elements,which is beneficial for the uniform substitution of W in the final *** was observed that with W substitution,the size of primary particles decreased from 338.06 to 71.76 nm,and cation disordering was as low as 3.34%.As a consequence,the pre-pared LNCW exhibited significantly improved electrochemical *** optimal conditions,the lithium-ion battery assembled with LiNi_(0.9)Co_(0.0925)W_(0.0075)O_(2)(LNCW-0.75mol%)had an improved capacity retention of 82.7%after 200 cycles,which provides insight in-to the development of Ni-rich low-Co *** work presents that W can compensate for the loss caused by Co deficiency to a cer-tain extent.

关键词： lithium-ion batteries Ni-rich low-cobalt W substitution spray pyrolysis

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Boosting the performance of LiNi_(0.90)Co_(0.06)Mn_(0.04)O_(2) electrode by uniform Li_(3)PO_(4) coating via atomic layer deposition

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Chinese Chemical Letters 2024年第5期35卷 499-503页

作者： Mingjiao Lu zhixing wang Gui Luo Huajun Guo Xinhai Li Guochun Yan Qihou Li Xianglin Li Ding wang Jiexi wang School of Metallurgy and Environment Central South UniversityChangsha 410083China BASF ShanShan Battery Materials Co. Ltd.Changsha 410006China Engineering Research Center of the Ministry of Education for Advanced Battery Materials Central South UniversityChangsha 410083China Hunan Provincial Key Laboratory of Nonferrous Value-Added Metallurgy Central South UniversityChangsha 410083China School of Physics and Chemistry Hunan First Normal UniversityChangsha 410205China National and Local Joint Engineering Laboratory for Lithium-ion Batteries and Materials Preparation Technology Key Laboratory of Advanced Battery Materials of Yunnan ProvinceFaculty of Metallurgical and Energy EngineeringKunming University of Science and TechnologyKunming 650093China

Ultra-high nickel material is considered to be a promising cathode ***,with the increase of nickel content,the interfacial side reactions between the cathode and electrolyte become increasingly ***,an atomically controllable ionic conductor Li_(3)PO_(4)(LPO)coating is deposited on the LiNi_(0.90)Co_(0.06)Mn_(0.04)O_(2)(NCM9064)based electrode by the atomic layer deposition *** results shows that the LPO coating is uniformly and densely covered on the surface of secondary particles of NCM9064,helping to prevent the direct contact between the electrolyte and cathode during the chargingdischarging *** addition,the coating layer is electrochemically *** a result,the interfacial side reactions during the long cycle are effectively suppressed,and the solid electrolyte interphase layer at the interface is *** electrode with 20 layers of LPO deposition(ALD-LPO-20)exhibits an excellent capacity retention of 81%after 200 cycles in 2.8-4.3 V at 25℃,which is 18%higher than the unmodified material(ALD-LPO-0).Besides,the moderate LPO coating improves the rate capability and high temperature cycling performance of *** study provides a method for the modification of ultra-high nickel cathode materials and corresponding electrodes.

关键词： Ultra-high nickel material LiNi_(0.90)Co_(0.06)Mn_(0.04)O_(2) Atomic layer deposition Li_(3)PO_(4) Ionic conductor

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Si-Wu-Tang attenuates liver fibrosis via regulating lncRNA H19-dependent pathways involving cytoskeleton remodeling and ECM deposition

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Chinese Journal of Natural Medicines 2024年第1期22卷 31-46页

作者： QU Jiaorong XUE Xiaoyong wang zhixing MA Zhi JIA Kexin LI Fanghong ZHANG Yinhao WU Ruiyu ZHOU Fei ZHAO Piwen LI Xiaojiaoyang School of Life Sciences Beijing University of Chinese MedicineBeijing 100029China School of Chinese Materia Medica Beijing University of Chinese MedicineBeijing 100029China State Key Laboratory of Medical Molecular Biology Department of Molecular Biology and BiochemistryInstitute of Basic Medical SciencesChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100005China

Liver fibrosis is a dynamic wound-healing response characterized by the agglutination of the extracellular matrix(ECM).Si-Wu-Tang(SWT),a traditional Chinese medicine(TCM)formula,is known for treating gynecological diseases and liver *** previous studies demonstrated that long non-coding RNA H19(H19)was markedly upregulated in fibrotic livers while its deficiency markedly reversed ***,the mechanisms by which SWT influences H19 remain ***,we established a bile duct ligation(BDL)-induced liver fibrosis model to evaluate the hepatoprotective effects of SWT on various cells in the *** results showed that SWT markedly improved ECM deposition and bile duct reactions in the ***,SWT relieved liver fibrosis by regulating the transcription of genes involved in the cytoskeleton remodeling,primarily in hepatic stellate cells(HSCs),and influencing cytoskeleton-related angiogenesis and hepatocellular *** modulation collectively led to reduced ECM *** extensive bioinformatics analyses,we determined that H19 acted as a miRNA sponge and mainly inhibited miR-200,miR-211,and let7b,thereby regulating the above cellular regulatory ***,SWT reversed H19-related miRNAs and signaling pathways,diminishing ECM deposition and liver ***,these protective effects of SWT were diminished with the overexpression of H19 in *** conclusion,our study elucidates the underlying mechanisms of SWT from the perspective of H19-related signal networks and proposes a potential SWT-based therapeutic strategy for the treatment of liver fibrosis.

关键词： Liver fibrosis LncRNA H19 Si-Wu-Tang miRNAs Cytoskeleton ECM deposition

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Si-Wu-Tang attenuates liver fibrosis via regulating lncRNA H19-dependent pathways involving cytoskeleton remodeling and ECM deposition

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Chinese Journal of Natural Medicines 2024年第01期 31-46页

作者： QU Jiaorong XUE Xiaoyong wang zhixing MA Zhi JIA Kexin LI Fanghong ZHANG Yinhao WU Ruiyu ZHOU Fei ZHAO Piwen LI Xiaojiaoyang School of Life Sciences Beijing University of Chinese Medicine State Key Laboratory of Medical Molecular Biology Department of Molecular Biology and Biochemistry Institute of Basic Medical Sciences Chinese Academy of Medical Sciences and Peking Union Medical College School of Chinese Materia Medica Beijing University of Chinese Medicine

Liver fibrosis is a dynamic wound-healing response characterized by the agglutination of the extracellular matrix(ECM). Si-Wu-Tang(SWT), a traditional Chinese medicine(TCM) formula, is known for treating gynecological diseases and liver fibrosis. Our previous studies demonstrated that long non-coding RNA H19(H19) was markedly upregulated in fibrotic livers while its deficiency markedly reversed fibrogenesis. However, the mechanisms by which SWT influences H19 remain unclear. Thus, we established a bile duct ligation(BDL)-induced liver fibrosis model to evaluate the hepatoprotective effects of SWT on various cells in the liver. Our results showed that SWT markedly improved ECM deposition and bile duct reactions in the liver. Notably, SWT relieved liver fibrosis by regulating the transcription of genes involved in the cytoskeleton remodeling, primarily in hepatic stellate cells(HSCs), and influencing cytoskeleton-related angiogenesis and hepatocellular injury. This modulation collectively led to reduced ECM deposition. Through extensive bioinformatics analyses, we determined that H19 acted as a miRNA sponge and mainly inhibited miR-200, miR-211, and let7b, thereby regulating the above cellular regulatory pathways. Meanwhile, SWT reversed H19-related miRNAs and signaling pathways, diminishing ECM deposition and liver fibrosis. However, these protective effects of SWT were diminished with the overexpression of H19 in vivo. In conclusion, our study elucidates the underlying mechanisms of SWT from the perspective of H19-related signal networks and proposes a potential SWT-based therapeutic strategy for the treatment of liver fibrosis.

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具有增强光催化和抗菌活性的TiO_(2)@Ag-GO复合材料

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中国表面工程 2024年第1期37卷 118-125页

作者：戴胜刘鲁英王致钘杨苹西南交通大学材料科学与工程学院成都610036

光催化降解环境中的污染物被认为一种理想的清洁方法,其中二氧化钛(TiO_(2))是目前最有前途的光催化材料之一。但由于能带宽、光生电子与空穴快速复合等特点,限制了其利用效率和范围,开发一种高效的TiO_(2)基光催化复合材料具有重要意... 详细信息

光催化降解环境中的污染物被认为一种理想的清洁方法,其中二氧化钛(TiO_(2))是目前最有前途的光催化材料之一。但由于能带宽、光生电子与空穴快速复合等特点,限制了其利用效率和范围,开发一种高效的TiO_(2)基光催化复合材料具有重要意义。通过简单的溶胶-凝胶法和一步Marangoni法,将TiO_(2)和Ag纳米颗粒(AgNPs)和氧化石墨烯(GO)有效结合,制备出显著增强光催化活性和抗菌能力的复合材料TiO_(2)@Ag-GO。氧化石墨烯(GO)具有多个催化活性中心,可以高效地进行光催化反应降解污染物。同时,还能提高电荷分离程度,抑制光生电子和空穴复合,提高TiO_(2)光催化活性。AgNPs具有存储电子和促进电荷分离的能力,同时释放的Ag+,赋予材料广谱的抗菌性能。光催化试验抑菌试验结果表明,复合材料能高效降解亚甲基蓝染料,2 h降解率达到74.5%,同时对金黄色葡萄球菌和铜绿杆菌有较强的杀灭作用。这种简易制备的高催化和杀菌功能的TiO_(2)基复合材料在光催化清洁领域有很大的应用潜力。

关键词：二氧化钛(TiO_(2)) Ag纳米颗粒(AgNPs) 氧化石墨烯(GO) 光催化活性抗菌性能

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油氢合建站时序性动态风险评估研究

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安全与环境学报 2024年第6期24卷 2094-2103页

作者：康健王之兴王庆梓王晗孟祥烜北京石油化工学院安全工程学院北京102617

油氢合建站作为新型能源基础设施,在实现传统油品加注和氢燃料运营的过程中面临诸多安全新问题,细致全面的风险评估模型将为油氢合建站安全管理提供重要理论支撑。提出了基于复杂网络分析的油氢合建站时序性动态风险评估模型,并应用于... 详细信息

油氢合建站作为新型能源基础设施,在实现传统油品加注和氢燃料运营的过程中面临诸多安全新问题,细致全面的风险评估模型将为油氢合建站安全管理提供重要理论支撑。提出了基于复杂网络分析的油氢合建站时序性动态风险评估模型,并应用于油氢合建站火灾爆炸事故。首先,针对灾害链构建的油氢合建站复杂网络结构特征,绘制事故致因链,探究事故的发生路径和内在致因机制。其次,考虑到不同时段风险发展趋势规律的差异性,引入时序加权平均算子(Time-Ordered Weighted Averaging, TOWA)和时序加权几何平均算子(Time-Ordered Weighted Geometric Averaging, TOWGA),结合季节维度对油氢合建站进行动静态综合评估。该方法能够直观揭示时段差异下,各风险指标对系统整体风险的影响程度,从季节角度为高风险灾害事件的防控提供了一种有益探索。

关键词：安全工程复杂网络灾害链时序加权平均算子(TOWA) 时序加权几何平均算子(TOWGA) 动态评价

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基于改进概率软逻辑模型的高校学生状态推理方法

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软件工程 2024年第5期27卷 45-50页

作者：张嘉王志星王娇西南科技大学计算机科学与技术学院四川绵阳621010 西南科技大学土木工程与建筑学院四川绵阳621010

随着高等教育的普及,各类管理决策需求增加,基于数据驱动和知识驱动的决策方法成为新的发展趋势。基于此,提出了一种通过改进概率软逻辑模型挖掘知识规律和推理学生状态的方法,该方法通过引入规则挖掘算法,赋予概率软逻辑模型自动挖掘... 详细信息

随着高等教育的普及,各类管理决策需求增加,基于数据驱动和知识驱动的决策方法成为新的发展趋势。基于此,提出了一种通过改进概率软逻辑模型挖掘知识规律和推理学生状态的方法,该方法通过引入规则挖掘算法,赋予概率软逻辑模型自动挖掘规则的能力。在真实学生状态数据上的实验结果表明,该方法在多项目标关系的推理上,准确率能达到80%以上,并且多层次推理结构的实验效果优于非层次推理结构的实验效果。对于学生状态类非完整知识库数据的挖掘和推理,该方法减少了人工工作量,降低了因人为认知偏差带来的不确定性。

关键词：概率软逻辑高校学生状态规则挖掘推理多层次结构

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CALCULATION　ON　THE　YIELD　STRENGTH　OF　A　PRECIPITATION　STRENGTHENING　Ni－BASE　ALLOYS

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中国有色金属学会会刊：英文版 1995年第4期5卷 139-141页

作者： Li, Bo wang, zhixing Yang, Hongcai Northeastern Univ Shenyang China

ＣＡＬＣＵＬＡＴＩＯＮＯＮＴＨＥＹＩＥＬＤＳＴＲＥＮＧＴＨＯＦＡＰＲＥＣＩＰＩＴＡＴＩＯＮＳＴＲＥＮＧＴＨＥＮＩＮＧＮｉ－ＢＡＳＥＡＬＬＯＹＳＬｉＢｏ；ＷａｎｇＺｈｉｘｉｎｇ；ＹａｎｇＨｏｎｇｃａｉ（Ｐ．Ｏ．Ｂｏｘ３... 详细信息

ＣＡＬＣＵＬＡＴＩＯＮＯＮＴＨＥＹＩＥＬＤＳＴＲＥＮＧＴＨＯＦＡＰＲＥＣＩＰＩＴＡＴＩＯＮＳＴＲＥＮＧＴＨＥＮＩＮＧＮｉ－ＢＡＳＥＡＬＬＯＹＳＬｉＢｏ；ＷａｎｇＺｈｉｘｉｎｇ；ＹａｎｇＨｏｎｇｃａｉ（Ｐ．Ｏ．Ｂｏｘ３２６，ＮｏｒｔｈｅａｓｔｅｒｎＵｎ...

关键词： Ni-base alloys precipitation strengthening calculation strength

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Bifunctional Li6CoO4 serving as prelithiation reagent and pseudocapacitive electrode for lithium ion capacitors

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Journal of Energy Chemistry 2020年第8期29卷 38-45,I0002页

作者： Yuntao Guo Xinhai Li zhixing wang Huajun Guo Jiexi wang School of Metallurgy and Environment Central South UniversityChangsha 410083HunanChina

Lithium ion capacitors(LICs)have been widely used as energy storage devices due to their high energy density and high power *** LICs,pre-lithiation of negative electrode is *** this work,we employ a bifunctional Li6CoO4(LCO)as cathodic pre-lithiation reagent to improve the electrochemical performance of *** synthesized LCO exhibited high first charge specific capacity of 721 mAh g-1and extremely low initial coulombic efficiency of 3.19%,providing sufficient Li+ for the pre-lithiation of negative electrode in the first ***,Li6–xCoOy is generated from LCO during the first charge process,which exhibits pseudocapacitive property and contributes to capacity in form of surface capacitance during subsequent cycles,increasing the capacity of capacitive positive *** the appropriate amounts of addition to the positive side in LICs,this bifunctional prelithiation reagent LCO shows significantly improved the electrochemical performance with the energy density of 78.5 Wh kg-1after 300 cycles between 2.0 and 4.2 V at 250 mA g-1.

关键词： Lithium ion capacitor Prelithiation reagent Pseudocapacitive electrode Li6CoO4

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Improving the electrochemical performance of LiMn_2O_4/graphite batteries using LiF additive during fabrication

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Rare Metals 2011年第2期30卷 120-125页

作者： LIU Yunjian GUO Huajun LI Xinhai wang zhixing School of Material Science and Engineering Jiangsu University Zhenjiang 212013 China School of Metallurgical Science and Engineering Central South University Changsha 410083 China

LiMn2O4/graphite batteries using LiF additive were fabricated and their electrochemical performance including discharge, cycling and storage performances were tested and compared with LiF-free LiMnEO4/graphite batteries. The LiMnEO4/graphite battery with LiF added shows better capacity （107.5 mAh/g）, cycling performance （capacity retention ratio of 93% after 100 cycles）, and capacity recovery ratio （98.1%） than the LiF-free battery. The improvement in electrochemical performance of the LiF-added LiMnEO4/graphite battery was due to the fact that LiF can restrain the dissolution of Mn from the spinel LiMn2O4 cathode into the electrolyte, leading to a smaller resistance and polariza- tion.

关键词： lithium batteries lithium fluoride additives electrochemical properties

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