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Decoding lithium batteries through advanced in situ characterization techniques

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International Journal of Minerals,Metallurgy and Materials 2022年第5期29卷 965-989页

作者： Mei Yang ruyi bi Jiangyan Wang Ranbo Yu Dan Wang State Key Laboratory of biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 10049China Department of Energy Storage Science and Engineering School of Metallurgical and Ecological EngineeringUniversity of Science and Technology BeijingBeijing 100083China

Given the energy demands of the electromobility market,the energy density and safety of lithium batteries(LBs)need to be improved,whereas its cost needs to be *** the enhanced performance and decreased cost,more suitable electrode and electrolyte materials should be developed based on the improved understanding of the degradation mechanisms and structure–performance correlation in the LB ***,various in situ characterization technologies have been developed during the past decades,providing abundant guidelines on the design of electrode and electrolyte *** we first review the progress of in situ characterization of LBs and emphasize the feature of the multi-model coupling of different characterization ***,we systematically discuss how in situ characterization technologies reveal the electrochemical processes and fundamental mechanisms of different electrode systems based on representative electrode materials and electrolyte ***,we discuss the current challenges,future opportunities,and possible directions to promote in situ characterization technologies for further improvement of the battery performance.

关键词： in situ characterization techniques multi-modal coupling lithium batteries electrochemical mechanism

Hollow multishelled structural TiN as multi-functional catalytic host for high-performance lithium-sulfur batteries

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Nano Research 2023年第11期16卷 12745-12752页

作者： Wei Xu ruyi bi Mei Yang Jiangyan Wang Ranbo Yu Dan Wang State Key Laboratory of biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China Key Laboratory of biopharmaceutical Preparation and Delivery Chinese Academy of SciencesBeijing 100190China

Lithium-sulfur(Li-S)battery has attracted extensive attention because of its ultrahigh theoretical energy density and low ***,its commercialization is seriously hampered by its short cycling life,mainly due to the shuttle of soluble lithium polysulfides(LiPSs)and poor rate capability due to sluggish reaction *** significant efforts have been devoted to solving the problems,it is still challenging to simultaneously address all the ***,titanium nitride hollow multishelled structure(TiN HoMS)sphere is designed as a multi-functional catalytic host for sulfur ***,with good conductivity,can effectively catalyze the redox conversion of S and LiPSs,while its surficial oxidation passivation layer can strongly anchor ***,HoMS enables TiN nanoparticle subunits to expose abundant active sites for anchoring and promoting conversion of LiPSs,while the multiple shells provide physical barriers to restrict the shuttle *** addition,HoMS can buffer the volume expansion of sulfur and shorten the charge transport *** a result,the sulfur cathode based on triple-shelled TiN HoMS exhibits an initial specific capacity of 1016 mAh·g-1 at a high sulfur loading of 2.8 mg·cm-2 and maintains 823 mAh·g-1 after 100 ***,it shows a four times higher specific capacity than the one without TiN host at 2 C.

关键词： lithium-sulfur batteries titanium nitride hollow multishelled structure shuttle effect rate capability

Nanostructured biVO4 Derived from bi-MOF for Enhanced Visible-light Photodegradation

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Chemical Research in Chinese Universities 2020年第1期36卷 120-126页

作者： CHEN Jianfei CHEN Xiaoyu ZHANG Xing YUAN Yao bi ruyi YOU Feifei WANG Zumin YU Ranbo Department of Physical Chemistry School of Metallurgical and Ecological EngineeringUniversity of Science and Technology BeijingBeijing 100083P.R.China State Key Laboratory of biochemical Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing 100190P.R.China Key Laboratory of Advanced Material Processing&Mold Ministry of EducationZhengzhou UniversityZhengzhou 450002P.R.China

biVO4,a promising visible-light responding photocatalyst,has aroused extensive research interest because of inexpensiveness and excellent chemical ***,its main drawback is the poor photoinduced charge-transfer *** nanostructures is an effective way to tackle this ***,we put forward a new method to prepare nanostructured biVO4 from bi-based metal-organic frameworks[bi-MOF(CAU-17)]*** as-prepared material has a rod-like morphology inherited from the bi-MOF sacrificial template and consists of small nanoparticle as building *** with its counterparts prepared by conventional methods,MOF-derived nanostructured biVO4 shows better light absorption ability,narrower bandgap,and improved electrical conductivity as well as reduced ***,biVO4 nanostructure demonstrates high photocatalytic activity under visible light towards the degradation of methylene *** blue can be degraded up to 90%within 30 min with a reaction rate constant of 0.058 ***,the cycling stability of the catalyst is excellent to withstand unchanged degradation efficiency for at least 5 cycles.

关键词： biVO4 Nanostructure Metal-organic framework Ternary metal oxide Photocatalysis

中空多壳层CoFe_(2)O_(4)的制备及锂离子电池性能研究

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高等学校化学学报 2023年第1期44卷 272-279页

作者：毕如一赵吉路王江艳于然波王丹北京科技大学冶金与生态工程学院物理化学系北京100083 中国科学院过程工程研究所生化工程国家重点实验室北京100190 中国科学院大学化学工程学院北京100049

以二元金属氧化物CoFe_(2)O_(4)为研究对象,通过次序模板法制备了CoFe_(2)O_(4)中空多壳层结构(HoMS)材料;对其形貌、结构进行了表征;考察了壳层结构与电化学性能之间的关系.电化学测试结果表明,双壳层-核CoFe_(2)O_(4)中空球具有最高... 详细信息

以二元金属氧化物CoFe_(2)O_(4)为研究对象,通过次序模板法制备了CoFe_(2)O_(4)中空多壳层结构(HoMS)材料;对其形貌、结构进行了表征;考察了壳层结构与电化学性能之间的关系.电化学测试结果表明,双壳层-核CoFe_(2)O_(4)中空球具有最高的放电比容量(1354.4 mA·h/g)、优异的倍率性能和循环稳定性,其独特的结构优势和最优的空腔体积占有率使其在多次循环过程中能始终保持结构和电化学性质的稳定.

关键词：中空多壳层结构 CoFe_(2)O_(4) 锂离子电池比容量循环稳定性

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中空纳米结构在表界面化学能源存储中的应用

化学学报 2020年第11期78卷 1200-1212页

作者：毕如一毛丹王江艳于然波王丹中国科学院过程工程研究所生化工程国家重点实验室北京100190 北京科技大学冶金与生态工程学院北京100083 中国科学院大学北京100049

中空纳米结构因具有有效比表面积大、传输路径短、缓冲性能好等优势,在能源转换和存储领域受到人们的广泛关注,本综述详细总结了中空纳米结构材料在以超级电容器为代表的表界面化学能源存储领域的研究进展.首先介绍了表界面化学能源存... 详细信息

中空纳米结构因具有有效比表面积大、传输路径短、缓冲性能好等优势,在能源转换和存储领域受到人们的广泛关注,本综述详细总结了中空纳米结构材料在以超级电容器为代表的表界面化学能源存储领域的研究进展.首先介绍了表界面化学能源存储的机理和挑战;其次详细讨论了中空材料的微观结构参数对表界面化学能源存储装置性能的影响;然后系统概述了近年来研究者如何利用中空纳米结构解决表界面化学能源存储中的问题并优化电容器性能;最后,展望了中空纳米结构在表界面化学能源存储中面临的挑战和未来的发展方向.

关键词：中空纳米结构表界面超级电容器比电容

四阶线性方程极弱局部间断Galerkin法傅里叶分析

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黑龙江大学自然科学学报 2024年第2期41卷 150-156页

作者：王如意毕卉刘威哈尔滨理工大学理学院哈尔滨150080

主要研究了四阶线性方程极弱局部间断Galerkin方法的傅里叶误差分析问题。首先,给出四阶线性方程的极弱局部间断Galerkin空间离散格式,并在周期边界条件及一致网格的条件下将离散格式表示为差分形式,然后,在k=2的情况下,利用傅里叶分析... 详细信息

主要研究了四阶线性方程极弱局部间断Galerkin方法的傅里叶误差分析问题。首先,给出四阶线性方程的极弱局部间断Galerkin空间离散格式,并在周期边界条件及一致网格的条件下将离散格式表示为差分形式,然后,在k=2的情况下,利用傅里叶分析方法分析其稳定性及其误差估计问题,最后,利用数值实验,分别对得到的结果进行验证。

关键词：四阶线性方程极弱局部间断Galerkin 傅里叶分析稳定性分析误差估计

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bi/B-TiO_(2)/bi_(2)WO_(6)催化剂的制备及bi纳米粒子影响光催化氧化甲苯的性能研究

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环境科学学报 2024年第8期44卷 131-142页

作者：韦飞文涛姜东生董一元张旭郭丽娜王如意贾勇国电环境保护研究院有限公司南京210031 安徽工业大学能源与环境学院马鞍山243002

挥发性有机化合物(VOCs)作为具有较强毒性的污染物,对生物和环境都产生了巨大的威胁.本文通过改变N,N-二甲基甲酰胺(DMF)的添加量,制得不同比例的bi/bi_(2)WO_(6)(简称BBWO),通过调控bi单质的含量制得一系列bi/B-TiO_(2)/bi_(2)WO_(6)(... 详细信息

挥发性有机化合物(VOCs)作为具有较强毒性的污染物,对生物和环境都产生了巨大的威胁.本文通过改变N,N-二甲基甲酰胺(DMF)的添加量,制得不同比例的bi/bi_(2)WO_(6)(简称BBWO),通过调控bi单质的含量制得一系列bi/B-TiO_(2)/bi_(2)WO_(6)(简称BBTB)催化剂,并测试其光催化降解甲苯的活性.结果表明:利用5 mL DMF制备的bi/B-TiO_(2)/bi_(2)WO_(6)(简称5-BBTB)表现出最高的甲苯降解活性,1 h内甲苯降解效率可达85%.通过XRD、FTIR、Raman、XPS、SEM、TEM等表征技术对BBTB催化剂进行化学组成及氧空位等结构的分析,证明了bi单质的成功析出.DRS、PL及电化学性能测试证明了bi单质的引入可以有效地提高催化剂对于可见光的响应能力及电子-空穴的分离效率.同时,利用EPR表征分析了光催化降解甲苯的过程中产生的主要活性氧物种.bi_(2)WO_(6)与B-TiO_(2)(N2氛围下,500℃,3 h煅烧后的黑色TiO_(2))的异质结及bi单质的存在提高了BBTB催化剂光催化转化甲苯的效率,但较多的bi单质的存在会成为电子和空穴重组中心,从而造成催化活性的下降.

关键词： BBTB催化剂光催化氧化甲苯异质结

Mild hyperthermia synergized chemotherapy by bi_(2)Se_(3)/MoSe_(2)nanosaucers for cancer treatment with negligible thermal resistance

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Nano Research 2022年第9期15卷 8270-8280页

作者： Fei Gao Tingbin Zhang Yuqing Miao Huijun Ma Hui Guo ruyi Jin Zhi Li Haifang Wang Haiming Fan Lingyun Zhao Institute of Integrative Medicine Shaanxi University of Chinese MedicineXi'an 712046China Key Laboratory of Advanced Materials Ministry of Education of ChinaSchool of Materials Science&EngineeringTsinghua UniversityBeijing 100084China College of Pharmacy Shaanxi University of Chinese MedicineXi'an 712046China Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education College of Chemistry and Materials ScienceNorthwest UniversityXi’an 710069China Shaanxi Key Laboratory of Integrative Traditional Chinese and Western Medicine for Prevention and Treatment of Cardiovascular Diseases Institute of Integrative MedicineShaanxi University of Chinese MedicineXi'an 712046China

Harsh photothermal temperatures(>50℃)caused heating damage to the normal tissues and induced thermal resistance in cancer cells,which significantly limited the safety and efficacy of photothermal therapy(PTT)in cancer *** hyperthermia(bined with chemotherapy might solve this ***,a novel transition metal dichalcogenides nanostructure,namely,bi_(2)Se_(3)/MoSe_(2)nanosaucers(BMNSs),was designed to produce mild photo-hyperthermia(mPTT)and combined with chemotherapy to improve the overall antitumor *** BMNSs were constituted by bi_(2)Se_(3)hexagonal nanoplates and enclosed with MoSe_(2)nanosheets *** the MoSe_(2)moiety endowed the nanoplatform with excellent photothermal efficacy,the bi_(2)Se_(3)substrates provided large specific surface area to anchor more doxorubicin(DOX)molecules as chemotherapeutic *** the stimuli of mPTT/tumor acidic microenvironment,the tumor-specific drug release and the enhanced chemotherapy could be realized,showing impressive therapeutic outcomes against 4T1 *** synergetic therapeutic mechanism might be attributed to the mPTT induced cell membrane permeability,and interestingly,the expression of heat shock proteins 70 was not elevated obviously after the synergetic therapy,thus to avoid the tumor thermal resistance and further improve the therapeutic *** in vivo anti-tumoral performance of the BMNSs was further studied and complete tumor eradication was achieved without any recurrence and *** only demonstrating a paradigm of high therapeutic efficacy of mild hyperthermia and synergistic chemotherapy for precise cancer therapy,our findings proved that the cancer therapeutic effect can be improved with minimal side effects through exquisite designing of the microstructures and the physiochemical properties of the nanoplatform.

关键词： mild hyperthermia MoSe_(2)/bi_(2)Se_(3)nanosaucers thermal resistance heat shock proteins 70

巨噬细胞极化在眼科疾病发生发展过程中的作用机制研究进展

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眼科新进展 2022年第3期42卷 239-243页

作者：屈如意周梦贤毕宏生郭大东山东中医药大学山东省济南市250014 山东省中西医结合眼病防治重点实验室山东省眼病防治研究院山东省济南市250002

巨噬细胞是单核吞噬细胞系统的主要细胞群,充当先天性免疫和适应性免疫的哨兵。在微环境信号作用下,巨噬细胞可被不同的激活物极化为不同功能的M1型、M2型巨噬细胞。巨噬细胞极化既可以发生在生理条件下,也可以发生在病理条件下,并贯穿... 详细信息

巨噬细胞是单核吞噬细胞系统的主要细胞群,充当先天性免疫和适应性免疫的哨兵。在微环境信号作用下,巨噬细胞可被不同的激活物极化为不同功能的M1型、M2型巨噬细胞。巨噬细胞极化既可以发生在生理条件下,也可以发生在病理条件下,并贯穿疾病发生、发展以及转归的全过程。很多眼科疾病的病理过程都和巨噬细胞极化密切相关,巨噬细胞极化及炎症因子介导的免疫反应是眼病发生的重要机制。本文简要综述了巨噬细胞的不同极化表型以及调节巨噬细胞极化平衡为治疗靶点在年龄相关性黄斑变性、自身免疫性葡萄膜炎、视网膜病变、干燥综合征以及角膜炎等眼科疾病中发挥的作用。

关键词：巨噬细胞极化年龄相关性黄斑变性自身免疫性葡萄膜炎视网膜病变干燥综合征角膜炎