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Advanced ferroferric oxide-based composites for lithium-ion battery: Recent developments and future perspectives

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Progress in Natural Science:Materials International 2023年第6期33卷 743-753页

作者： Huiyu Jiang qin Mu Hideo Kimura Rui Liu Wenyue Yang Liyuan Liu Wei Du chuanxin Hou School of Environmental and Material Engineering Yantai University Shandong Institute of Scientific and Technical Information Shandong University of Aeronautics

Lithium-ion batteries(LIBs) possess remarkable advantages in terms of abundant reserves,high theoretical capacity,and low ***,the current graphite anodes fail to meet the daily requirements of *** study of novel high-energy storage LIBs anode materials is increasingly *** oxide(Fe3O4)anode material is listed as a research object due to its exceptional theoretical specific capacity,cost-effectiveness,sufficient resources,and simple preparation ***,the low conductivity and volume expansion issues limit its long-term development and widespread ***,extensive research has been reported on Fe3O4composite electrode materials with diverse structures,achieving significant *** review summarizes the latest progress in high-performance Fe3O4composites based on recent ***,Fe3O4composite anode materials based on dimensions is categorized and the structure-property relationship with different dimensions is *** work will motivate the preparation of Fe3O4-based composites electrodes with high electrochemical performance for lithium-ion batteries,aims to promote the commercial application of rechargeable lithium-ion energy storages.

关键词： Lithium-ion batteries Fe3O4 Transition metal oxide Anode Morphology construction

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高公岛紫菜养殖区浮游动物生态群落特征

江苏海洋大学学报（自然科学版） 2020年第1期29卷 8-11页

作者：马鸿梅王兴强吴建新冯艳琴秦传新沈晔郑年昊江苏海洋大学海洋生命与水产学院江苏连云港222005 中国水产科学研究院南海水产研究所广东广州510300

对高公岛紫菜养殖区海洋浮游动物生态群落特征进行调查,在高公岛紫菜养殖区附近设置18个采样站点,鉴定出4门6类22种浮游动物,包括节肢动物门、脊索动物门、软体动物门和毛颚动物门。调查海域的浮游动物丰度指数范围为0.926~1.980,平均值... 详细信息

对高公岛紫菜养殖区海洋浮游动物生态群落特征进行调查,在高公岛紫菜养殖区附近设置18个采样站点,鉴定出4门6类22种浮游动物,包括节肢动物门、脊索动物门、软体动物门和毛颚动物门。调查海域的浮游动物丰度指数范围为0.926~1.980,平均值为1.510;浮游动物均匀度指数范围为0.659~0.882,平均值为0.781;多样性指数范围为1.924~2.979,平均值为2.548。优势种为桡足幼体(Copepodid larva)、无节幼体(Nauplius)、克氏纺锤水蚤(Acartia clausi)、小拟哲水蚤(Paracalanus parvus)和中华哲水蚤(Calanus sinicus),对应的优势度指数平均值分别为0.188,0.052,0.067,0.265和0.070。研究结果表明,各类指数的变化幅度较明显,紫菜养殖区的浮游动物与其他海域的调查结果相比,各项指标偏低。

关键词：高公岛紫菜养殖区浮游动物生态群落特征指数

低盐胁迫对金乌贼存活、免疫酶活性和基因表达的影响

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江苏海洋大学学报（自然科学版） 2020年第2期29卷 6-14页

作者：王兴强沈晔崔春辉曹梅王力丁雪峰刘豪杰秦传新陈百尧江苏海洋大学海洋生命与水产学院江苏连云港222005 中国水产科学研究院南海水产研究所广东广州510300 连云港市农业农村局江苏连云港222005

通过测定15,20,25和30盐度下金乌贼的存活率和免疫酶活性,挖掘前期转录组信息,筛选差异表达基因,并进行qPCR验证,以探讨低盐胁迫对其存活、免疫和基因表达的影响。结果表明,随着盐度降低和时间延长,其幼体存活率显著降低。低盐胁迫影响... 详细信息

通过测定15,20,25和30盐度下金乌贼的存活率和免疫酶活性,挖掘前期转录组信息,筛选差异表达基因,并进行qPCR验证,以探讨低盐胁迫对其存活、免疫和基因表达的影响。结果表明,随着盐度降低和时间延长,其幼体存活率显著降低。低盐胁迫影响幼体超氧化物歧化酶(SOD)和过氧化物酶(POD)活性、总抗氧化能力(T-AOC)和丙二醛(MDA)数值,推测金乌贼适宜盐度为30左右。低盐胁迫下,促肾上腺皮质激素释放因子结合蛋白、嗅觉受体蛋白和磺基转移酶等基因表达上调,钙调素、胶原酶3、Ran结合蛋白9和抑制结构域蛋白等基因表达下调,表明低盐胁迫可通过调控金乌贼基因表达,影响其摄食、脂肪代谢、细胞迁移和创伤修复,调节细胞Ca 2+平衡,维持低盐胁迫下体内的稳态。

关键词：金乌贼低盐胁迫存活免疫酶活性基因表达

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北部湾东北部游泳生物资源现状

南方水产科学 2011年第3期7卷 31-38页

作者：袁华荣陈丕茂贾晓平唐振朝秦传新余景蔡文贵舒黎明中国水产科学研究院南海水产研究所农业部南海渔业资源环境重点野外科学观测试验站广东广州510300 上海海洋大学海洋科学学院上海201306

2009年至2010年对北部湾东北部海域游泳生物调查研究表明,该海域共有游泳生物300种,其中鱼类有209种(硬骨鱼类205种,软骨鱼类4种),隶属15目、70科、119属;甲壳类76种;头足类15种。底层鱼类100种,近底层鱼类72种,中上层鱼类29种,岩礁性鱼... 详细信息

2009年至2010年对北部湾东北部海域游泳生物调查研究表明,该海域共有游泳生物300种,其中鱼类有209种(硬骨鱼类205种,软骨鱼类4种),隶属15目、70科、119属;甲壳类76种;头足类15种。底层鱼类100种,近底层鱼类72种,中上层鱼类29种,岩礁性鱼类8种,分别占鱼类总数的47.85%,34.45%,13.87%和3.83%。暖水性鱼类153种,暖温性鱼类55种,冷温性鱼类1种,分别占鱼类总数的73.20%,26.32%和0.48%。游泳生物种类数季节变化为夏季>秋季>春季>冬季;资源密度指数季节变化为夏季>秋季>春季>冬季;渔业资源密度随季节变化为夏季>秋季>春季>冬季,渔业资源年平均资源密度为522.925 ***-2,约相当于该海域原始渔业资源密度的1/10;生物多样性指数以夏、秋季最高。估算了北部湾东北部海域潜在渔业资源量为1.092×105t.a-1,最大可捕量为5.460×104t.a-1。比较了北部湾渔业资源的历史变动情况,对渔业资源的进一步养护和管理提出了建议。

关键词：游泳生物资源北部湾东北部种类组成季节变化

Fluorene pendant-functionalization of poly(N-vinylcarbazole)as deep-blue fluorescent and host materials for polymer light-emitting diodes

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Chinese Chemical Letters 2023年第8期34卷 484-489页

作者： Ning Sun qin Zou Wenyu Chen Yingying Zheng Kai Sun Chunbin Li Yamin Han Lubing Bai chuanxin Wei Jinyi Lin Chengrong Yin Jianguo Wang Wei Huang Key Laboratory of Flexible Electronics(KLOFE)and Institute of Advanced Materials(IAM) Nanjing Tech University(NanjingTech)Nanjing 211816China College of Chemistry and Chemical Engineering Inner Mongolia Key Laboratory of Fine Organic SynthesisInner Mongolia UniversityHohhot 010021China Centre for Molecular Systems and Organic Devices(CMSOD) Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials(IAM)Nanjing University of Posts and TelecommunicationsNanjing 210023China Shaanxi Institute of Flexible Electronics(SIFE) Northwestern Polytechnical University(NPU)Xi’an 710072China

π-Electron coupling of pendant conjugated segment inπ-stacked semiconducting polymers always causes the formation of defect trapped sites and further quenched high-band excitons,which is harmful to the performance and stability of deep-blue polymer light-emitting diodes(PLEDs).Herein,considerate of“defect”carbazole(Cz)electromers in poly(N-vinylcarbazole)(PVK),a series of fluorene units are introduced into pendant segments(PVCz-DMeF,PVCz-FMeNPh and PVCz-DFMeNPh)to suppress the strongπ-electron coupling of pendant Cz units and enhance radiative transition toward fabricating sable *** to PVCz-FMeNPh and PVCz-DFMeNPh,PVCz-DMeF spin-coated films show a relatively efficient deep-blue emission,completely similar to its single pendant chromophore,confirmed an extremely weak charge-transfer and electron coupling between adjacent pendant ***,PLEDs based on PVCz-DMeF present stable and deep-blue emission with a high color purity(0.17,0.08),associated with extremely weak defect emission at 600∼700nm(induced by carbazole electromers).Finally,PLEDs based on PVCz-DMeF/F8BT blended films(1:1)also present the high maximum luminance(Lmax)of 6261 cd/m2 and current efficiency(CE_(max))of 2.03 cd/A,confirmed slightly trapped sites ***,precisely control the arrangement and packing model of pendant units inπ-stacked polymer is an essential prerequisite for building efficient and stable emitter for optoelectronic devices.

关键词： Poly(N-vinylcarbazole) Fluorene Deep-blue emission Energy transfer Polymer light-emitting diodes

Grain Boundaries Engineering of Hollow Copper Nanoparticles Enables Highly Efficient Ammonia Electrosynthesis from Nitrate

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CCS Chemistry 2022年第6期4卷 2053-2064页

作者： Qi Hu Yongjie qin Xiaodeng Wang Hongju Zheng Keru Gao Hengpan Yang Peixin Zhang Minhua Shao chuanxin He College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhenGuangdong 518060 Department of Chemical and Biological Engineering and Energy Institute The Hong Kong University of Science and TechnologyKowloonHong Kong 999077

Electrochemical nitrate reduction reaction(NO_(3)−RR)is an ideal route to produce ammonia(NH_(3))under ambient *** a markedly improved NH3 production rate has been achieved on the NO_(3)−RR compared with the nitrogen reduction reaction(NRR),the NH_(3) production rate of NO_(3)−RR is still well below the industrial Haber-Bosch route due to the lack of robust electrocatalysts for yielding high current densitieswith concurrently good suppression of hydrogen evolution reaction(HER).Herein,we describe an in situ electrochemical strategy for the synthesis of hollow carbon-coated Cu nanoparticles(NPs)(HSCu@C)with abundant grain boundaries(HSCu-AGB@C)for highly efficient NO_(3)−RR in both alkaline and neutral ***,in alkaline media,the HSCu-AGB@C can achieve a maximum NH3 Faradaic efficiency of 94.2% with an ultrahigh NH_(3) rate of 487.8 mmol g^(−1) cat h^(−1) at−0.2 V versus a reversible hydrogen electrode,more than 2.4-fold of the rate obtained in the *** theoretic computations and experimental results uncover that the grain boundaries play the key to improve the NO_(3)−RR ***,the industrial-scale NH_(3) production ratemay open exciting opportunities for the practical electrosynthesis NH_(3) under ambient conditions.

关键词： grain boundaries hollow structures artificial ammonia production nitrate reduction reaction Haber-Bosch route

Unveiling the Effects of Interchain Hydrogen Bonds on Solution Gelation and Mechanical Properties of Diarylfluorene-Based Semiconductor Polymers

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Research 2020年第1期2020卷 547-561页

作者： Lubing Bai Yamin Han Chen Sun Xiang An chuanxin Wei Wei Liu Man Xu Lili Sun Ning Sun Mengna Yu He Zhang Qi Wei Chunxiang Xu Yingguo Yang Tianshi qin Linghai Xie Jinyi Lin Wei Huang Center for Supramolecular Optoelectronics(CSO) Key Laboratory of Flexible Electronics(KLOFE)and Institute of Advanced Materials(IAM)Nanjing Tech University(NanjingTech)30 South Puzhu RoadNanjing 211816China State Key Laboratory of Bioelectronics School of Electronic Science and Medical EngineeringSoutheast UniversityNanjing 210096China Center for Molecular Systems and Organic Devices(CMSOD) Key Laboratory for Organic Electronics and Information Displays&Institute of Advanced Materials(IAM)Nanjing University of Posts&Telecommunications9 Wenyuan RoadNanjing 210023China Frontiers Science Center for Flexible Electronics(FSCFE) Shaanxi Institute of Flexible Electronics(SIFE)Shaanxi Institute of Biomedical Materials and Engineering(SIBME)Northwestern Polytechnical University(NPU)127 West Youyi RoadXi’an 710072China Shanghai Synchrotron Radiation Facility(SSRF) Zhangjiang LabShanghai Advanced Research InstituteChinese Academy of Sciences239 Zhangheng RoadShanghai 201204China

The intrinsically rigid and limited strain of most conjugated polymers has encouraged us to optimize the extensible properties of conjugated ***,learning from the hydrogen bonds in glucose,which were facilitated to the toughness enhancement of cellulose,we introduced interchain hydrogen bonds to polydiarylfluorene by amide-containing side *** tuning the copolymerization ratio,we systematically investigated their influence on the hierarchical condensed structures,rheology behavior,tensile performances,and optoelectronic properties of conjugated *** to the reference copolymers with a low ratio of amide units,copolymers with 30%and 40%amide units present a feature of the shearthinning process that resembled the non-Newtonian fluid,which was enabled by the interchain dynamic hydrogen ***,we developed a practical and universal method for measuring the intrinsic mechanical properties of conjugated *** demonstrated the significant impact of hydrogen bonds in solution gelation,material crystallization,and thin film ***,the breaking elongation for P4 was even up to~30%,which confirmed the partially enhanced film ductility and toughness due to the increased amide ***,polymer light-emitting devices(PLEDs)based on these copolymers presented comparable performances and stable electroluminescence(EL).Thin films of these copolymers also exhibited random laser emission with the threshold as low as 0.52μJ/cm^(2),suggesting the wide prospective application in the field of flexible optoelectronic devices.

关键词： bonds conjugated film

Nitrogen and sulfur dual-doped high-surface-area hollow carbon nanospheres for efficient CO2 reduction

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Chinese Journal of Catalysis 2020年第5期41卷 830-838页

作者： Guodong Li Yongjie qin Yu Wu Lei Pei Qi Hu Hengpan Yang Qianling Zhang Jianhong Liu chuanxin He Department of Chemical Physics University of Science and Technology of ChinaHefei 230026AnhuiChina Shenzhen Key Laboratory for Functional Polymer College of Chemistry and Environmental EngineeringShenzhen UniversityShenzhen 518060GuangdongChina

The electrochemical reduction of CO2(CO2 RR) can substantially contribute to the production of useful chemicals and reduction of global CO2 emissions. Herein, we presented N and S dual-doped high-surface-area carbon materials(SZ-HCN) as CO2 RR catalysts. N and S were doped by one-step pyrolysis of a N-containing polymer and S powder. ZnCl2 was applied as a volatile porogen to prepare porous SZ-HCN. SZ-HCN with a high specific surface area(1510 m2 g–1) exhibited efficient electrocatalytic activity and selectivity for CO2 RR. Electrochemical measurements demonstrated that SZ-HCN showed excellent catalytic performance for CO2-to-CO reduction with a high CO Faradaic efficiency(~93%) at-0.6 V. Furthermore, SZ-HCN offered a stable current density and high CO selectivity over at least 20 h continuous operation, revealing remarkable electrocatalytic durability. The experimental results and density functional theory calculations indicated that N and S dual-doped carbon materials required lower Gibbs free energy to form the COOH* intermediate than that for single-N-doped carbon for CO2-to-CO reduction, thereby enhancing CO2 RR activity.

关键词： High specific surface area Hollow structure Carbon-based catalysts CO2 reduction reaction Electrocatalytic selectivity

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流线型箱梁气动外形的数值优化

哈尔滨工业大学学报 2021年第10期53卷 93-100页

作者：孙强周志勇胡传新秦鹏黄德睦土木工程防灾国家重点实验室(同济大学) 上海200092 中国路桥工程有限责任公司北京100011 武汉科技大学城市建设学院武汉430081

为改善基于风洞试验的桥梁断面气动外形优化方法所固有的人力物力耗费、搜索范围有限等缺点,提出了一套基于数值计算和数学策略的主梁气动外形优化方法。选取断面下腹板倾角和梁高作为设计变量,以计算流体力学(CFD)模拟和颤振时域法作... 详细信息

为改善基于风洞试验的桥梁断面气动外形优化方法所固有的人力物力耗费、搜索范围有限等缺点,提出了一套基于数值计算和数学策略的主梁气动外形优化方法。选取断面下腹板倾角和梁高作为设计变量,以计算流体力学(CFD)模拟和颤振时域法作为数值计算手段替代风洞试验,将试验设计、蚁群混合遗传算法与Kriging代理模型作为协同数学策略替代试错法,探索优化了苏通长江大桥流线型箱梁断面颤振性能最佳的参数匹配方案。结果显示,设计域内最优断面颤振临界风速比原型断面提高8%,下腹板倾角相比梁高对颤振性能影响更大,且存在交互作用。主梁断面气动外形数值优化方法能够较好地取代风洞试验进行外形寻优,研究对以后大跨度桥梁断面选型具有借鉴意义。

关键词：流线型箱梁 CFD Kriging模型气动外形优化颤振时域法蚁群混合遗传算法颤振性能