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Lithium metal batteries for high energy density:Fundamental electrochemistry and challenges

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Journal of Energy Chemistry 2021年第8期30卷 666-687,I0014页

作者： Mingda Gao Hui Li Li Xu Qing Xue Xinran Wang ying bai Chuan Wu Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science and EngineeringBeijing Institute of Technology100081 BeijingChina State Key Laboratory of Advanced Power Transmission Technology(Global Energy Interconnection Research Institute Co.Ltd.) BeijingChina Collaborative Innovation Center of Electric Vehicles in Beijing 100081 BeijingChina

The dependence on portable devices and electrical vehicles has triggered the awareness on the energy storage systems with ever-growing energy *** metal batteries(LMBs)has revived and attracted considerable attention due to its high volumetric(2046 m Ah cm-3),gravimetric specific capacity(3862 m Ah g^(-1))and the lowest reduction potential(-3.04 V ***.).However,during the electrochemical process of lithium anode,the growth of lithium dendrite constitutes the biggest stumbling block on the road to LMBs *** undesirable dendrite not only limit the Coulombic efficiency(CE)of LMBs,but also cause thermal runaway and other safety issues due to *** the mechanisms of lithium nucleation and dendrite growth provides insights to solve these ***,we summarize the electrochemical models that inherently describe the lithium nucleation and dendrite growth,such as the thermodynamic,electrodeposition kinetics,internal stress,and interface transmission *** parameters of temperature,current density,internal stress and interfacial Li+flux are *** improve the LMBs performance,state-of-the-art optimization procedures have been developed and systematically illustrated with the intrinsic regulation principles for better lithium anode stability,including electrolyte optimization,artificial interface layers,threedimensional hosts,external field,*** practical applications of LMBs,the current development of pouch cell LMBs have been further introduced with different assembly systems and fading ***,challenges and obstacles still exist for the development of LMBs,such as in-depth understanding and in-situ observation of dendrite growth,the surface protection under extreme condition and the self-healing of solid electrolyte interface.

关键词： Metallic lithium anode Energy density Dendrite growth Optimization procedures Pouch cells

High‑Mass‑Loading Electrodes for Advanced Secondary Batteries and Supercapacitors

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Electrochemical Energy Reviews 2021年第2期4卷 382-446页

作者： Feng Wu Mingquan Liu ying Li Xin Feng Kun Zhang ying bai Xinran Wang Chuan Wu School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Collaborative Innovation Center of Electric Vehicles in Beijing Beijing 100081China

The growing demand for advanced electrochemical energy storage systems(EESSs)with high energy densities for electric vehicles and portable electronics is driving the electrode revolution,in which the development of high-mass-loading electrodes(HMLEs)is a promising route to improve the energy density of batteries packed in limited spaces through the optimal enlargement of active material loading ratios and reduction of inactive component ratios in overall cell ***,HMLEs face significant challenges including inferior charge kinetics,poor electrode structural stability,and complex and expensive production *** on this,this review will provide a comprehensive summary of HMLEs,beginning with a basic presentation of factors influencing HMLE electrochemical properties,the understanding of which can guide optimal HMLE *** strategies to improve the electrochemical performance of HMLEs accompanied by corresponding advantages and bottlenecks are subsequently discussed in terms of various factors ranging from inactive component modification to active material design to structural engineering at the electrode *** review will also present the recent progress and approaches of HMLEs applied in various EESSs,including advanced secondary batteries(lithium-/sodium-/potassium-/aluminum-/calcium-ion batteries,lithium metal anodes,lithium-sulfur batteries,lithium-air batteries,zinc batteries,magnesium batteries)and ***,this review will examine the challenges and prospects of HMLE commercialization with a focus on thermal safety,performance evaluation,advanced characterization,and production cost assessment to guide future development.

关键词： High mass loading Thick electrode High energy density Advanced secondary battery Supercapacitor

Fluid evolution and hydrocarbon accumulation model of ultra-deep gas reservoirs in Permian Qixia Formation of northwest Sichuan Basin,SW China

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Petroleum Exploration and Development 2022年第4期49卷 719-730页

作者： LI Jianzhong bai Bin bai ying LU Xuesong ZHANG Benjian QIN Shengfei SONG Jinmin JIANG Qingchun HUANG Shipeng Research Institute of Petroleum Exploration&Development PetroChinaBeijing 100083China Research Institute of Petroleum Exploration&Development of PetroChina Southwest Oil&Gas Field Company Chengdu 610051China College of Energy Resources Chengdu University of TechnologyChengdu 610059China

The fluid evolution and reservoir formation model of the ultra-deep gas reservoirs in the Permian Qixia Formation of the northwestern Sichuan Basin are investigated by using thin section,cathodoluminescence,inclusion temperature and U-Pb isotopic dating,combined with gas source identification plates and reservoir formation evolution profiles established based on burial history,thermal history,reservoir formation history and diagenetic evolution *** fluid evolution of the marine ultra-deep gas reservoirs in the Qixia Formation has undergone two stages of dolomitization and one phase of hydrothermal action,two stages of oil and gas charging and two stages of associated burial *** diagenetic fluids include ancient seawater,atmospheric freshwater,deep hydrothermal fluid and hydrocarbon *** two stages of hydrocarbon charging happened in the Late Triassic and Late Jurassic–Early Cretaceous respectively,and the Middle to Late Cretaceous is the period when the crude oil cracked massively into *** gas reservoirs in deep marine Permian strata of northwest Sichuan feature multiple source rocks,composite transportation,differential accumulation and late *** natural gas in the Permian is mainly cracked gas from Permian marine mixed hydrocarbon source rocks,with cracked gas from crude oil in the deeper Sinian strata in local *** scale development of paleo-hydrocarbon reservoirs and the stable and good preservation conditions are the keys to the forming large-scale gas reservoirs.

关键词： Sichuan Basin northwest Sichuan Basin Permian Qixia Formation accumulation evolution fluid sources hydrocarbon charging gas accumulation

Photometric and spectroscopic study of flares on Ross 15

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Research in Astronomy and Astrophysics 2021年第1期21卷 67-74页

作者： Jian-ying bai Ali Esamdin Xing Gao Yan Yan Juan-Juan Ren Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China University of Chinese Academy of Sciences Beijing 100049China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China CAS Key Laboratory of Solar Activity National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China

We conducted photometric and spectroscopic observations of Ross 15 in order to further study the flare properties of this less observed flare star.A total of 28 B-band flares are detected in 128 hr of photometric observations,leading to a total flare rate of 0.22-0.040.04 h-1,more accurate than that provided by previous *** give the energy range of the B-band flare(1029.5-1031.5 erg) and the flare frequency distribution(FFD) for the *** the same energy range,the FFD is lower than that of GJ 1243(M4)and YZ CMi(M4.5),roughly in the middle of those of three M5-type stars and higher than the average FFDs of spectral types> *** performed,for the first time for Ross 15,simultaneous high-cadence spectroscopic and photometric observations,resulting in detection of the most energetic flare in our *** intensity enhancements of the continuum and Balmer lines with significant correlations between them are detected during the flare,which is the same as those of other deeply studied flare stars with similar spectral type.

关键词： stars:flare stars:activity stars:late-type

房水Sema3A、Klotho、SDF-1与增生型糖尿病视网膜病变患者术后新生血管性青光眼的关系研究

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现代生物医学进展 2024年第12期24卷 2356-2360页

作者：曾春梅邓斌白莹李颖媛梁光丽成都市第六人民医院眼科四川成都610051

目的:探讨房水信号素3A(Sema3A)、克洛索(Klotho)、基质细胞衍生因子-1(SDF-1)与增生型糖尿病视网膜病变(PDR)患者术后新生血管性青光眼(NVG)的关系。方法:选取2021年1月~2022年1月成都市第六人民医院收治的145例接受玻璃体切割术PDR患... 详细信息

目的:探讨房水信号素3A(Sema3A)、克洛索(Klotho)、基质细胞衍生因子-1(SDF-1)与增生型糖尿病视网膜病变(PDR)患者术后新生血管性青光眼(NVG)的关系。方法:选取2021年1月~2022年1月成都市第六人民医院收治的145例接受玻璃体切割术PDR患者,根据术后1年是否发生NVG分为NVG组和非NVG组。酶联免疫吸附法检测房水Sema3A、Klotho、SDF-1水平。采用多因素Logistic回归分析影响PDR患者术后NVG的因素,受试者工作特征(ROC)曲线分析房水Sema3A、Klotho、SDF-1对PDR患者术后NVG的预测价值。结果:PDR患者随访1年,术后NVG发生率为17.24%。与非NVG组比较,NVG组房水Sema3A、SDF-1水平升高,Klotho水平降低(P<0.05)。多因素Logistic回归分析显示,术前虹膜新生血管和Sema3A、SDF-1升高为影响PDR患者术后NVG的独立危险因素,Klotho升高为独立保护因素(P<0.05)。ROC曲线分析显示,房水Sema3A、Klotho、SDF-1联合预测PDR患者术后NVG的曲线下面积(AUC)为0.913,大于房水Sema3A、Klotho、SDF-1单独预测的0.796、0.794、0.800。结论:房水Sema3A、SDF-1升高和Klotho降低与PDR患者术后NVG发生密切相关,房水Sema3A、Klotho、SDF-1联合检测对PDR患者术后NVG具有较高的预测价值。

关键词：增生型糖尿病视网膜病变 Sema3A Klotho SDF-1 新生血管性青光眼

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现代生物医学进展 2024年第18期24卷 3585-3589页

作者：邓斌曾春梅白莹李颖媛梁光丽成都市第六人民医院眼科

目的：探讨年龄相关性白内障（ARC）患者血清和房水同型半胱氨酸（Hcy）、25羟维生素D[25-(OH)-D]、高迁移率族蛋白B1(HMGB1)与氧化应激指标和炎症细胞因子的相关性。方法：选取2021年1月～2023年1月成都市第六人民医院收治的ARC患者13... 详细信息

目的：探讨年龄相关性白内障（ARC）患者血清和房水同型半胱氨酸（Hcy）、25羟维生素D[25-(OH)-D]、高迁移率族蛋白B1(HMGB1)与氧化应激指标和炎症细胞因子的相关性。方法：选取2021年1月～2023年1月成都市第六人民医院收治的ARC患者135例作为ARC组和同期60名眼外伤患者作为对照组。检测血清和房水Hcy、25-(OH)-D、HMGB1、氧化应激指标[超氧化物歧化酶（SOD）、丙二醛（MDA）、过氧化氢酶（CAT）、谷胱甘肽过氧化物酶（GSH-PX）]和炎症细胞因子[肿瘤坏死因子-α(TNF-α)、白细胞介素（IL）-1β、IL-6、IL-8]水平。Pearson相关性分析ARC患者血清和房水Hcy、25-(OH)-D、HMGB1与氧化应激和炎症细胞因子水平的相关性。结果：ARC组血清和房水Hcy、HMGB1、MDA、TNF-α、IL-1β、IL-6、IL-8水平高于对照组，25-(OH)-D、SOD、CAT、GSH-PX水平低于对照组（P<0.05）。Pearson相关性分析显示，ARC患者血清和房水Hcy、HMGB1与SOD、CAT、GSH-PX呈负相关，与MDA、TNF-α、IL-1β、IL-6、IL-8呈正相关（P<0.05）;25-(OH)-D与SOD、CAT、GSH-PX呈正相关，与MDA、TNF-α、IL-1β、IL-6、IL-8呈负相关（P<0.05）。结论：ARC患者血清和房水Hcy、HMGB1水平升高，25-(OH)-D水平降低，与氧化应激和炎症细胞因子存在显著关联。Hcy、HMGB1、25-(OH)-D可能通过氧化应激和炎症反应参与ARC发生发展。

关键词：年龄相关性白内障 Hcy 25-(OH)-D HMGB1 氧化应激炎症细胞因子

Surface engineering based on in situ electro-polymerization to boost the initial Coulombic efficiency of hard carbon anode for sodium-ion battery

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Rare Metals 2022年第5期41卷 1616-1625页

作者： Cheng-Xin Yu Yu Li Zhao-Hua Wang Xin-Ran Wang ying bai Chuan Wu Beijing Key Laboratory of Environmental Science and Engineering School of Materials Science&EngineeringBeijing Institute of TechnologyBeijing 100081China Yangtze Delta Region Academy of Beijing Institute of Technology Jiaxing 314019China

Hard carbon(HC) is considered as a commercial candidate for anode materials of sodium-ion batteries due to its low cost and excellent capacity. However, the problem of low initial Coulombic efficiency is still urgently needed to be solved to promote the industrialization of *** this paper, 2,2-dimethylvinyl boric acid(DEBA) is used to modify the surface of HC to prepare HC-DEBA materials. During the cycling, the C = C bonds of DEBA molecules will be in situ electro-polymerized to form a polymer network, which can act as the passive protecting layer to inhibit irreversible decomposition of electrolyte,and induce a thinner solid electrolyte interface with lower interface impedance. Therefore, HC-DEBA has higher initial Coulombic efficiency and better cycling stability. In ester-based electrolyte, the initial Coulombic efficiency of the optimized HC-DEBA-3% increases from 65.2% to77.2%. After 2000 cycles at 1 A·g^(-1), the capacity retention rate is 90.92%. Moreover, it can provide a high reversible capacity of 294.7 m Ah·g^(-1) at 50 mA·g^(-1). This simple surface modification method is ingenious and versatile,which can be extended to other energy storage materials.

关键词： Sodium-ion battery Hard carbon Initial Coulombic efficiency Solid electrolyte interface Surface modification Ester electrolyte

基于信息-知识-信念-行为模式管理慢性前列腺炎患者的效果评价

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慢性病学杂志 2024年第5期 668-671页

作者：徐秀举吴限白莹代涛李礼滨海县人民医院医务科江苏盐城224500

目的探究在信息-知识-信念-行为(information-knowledge-attitude-practice,IKAP)模式干预下的慢性前列腺炎(chronic prostatitis,CP)患者的管理效果。方法选取2022年6月至2022年12月参与CP筛查并最终确诊的141例患者作为研究对象,按随机数字表法分为对照组72例和观察组69例,对照组实施常规的治疗及干预方式,观察组在常规治疗的基础上,采用IKAP模式进行健康干预,比较分析两组CP患者干预前后的CP相关评价指标。结果干预后,两组的美国国立卫生院的慢性前列腺炎症状指数(National Institutes of Health-chronic prostatitis symptom index,NIH-CPSI)综合评分、现时疼痛强度(present pain intensity,PPI)评分、抑郁自评量表(self-rating depression scale,SDS)评分比较,差异均有统计学意义(t=3.984、11.345、7.588,P0.05);观察组患者的行为健康状况较对照组效果好,差异有统计学意义(χ^(2)=14.760,P<0.01)结论运用IKAP健康管理模式可有效提高CP患者的健康认知水平、促进健康行为、树立健康信念,对CP患者的生理、心理健康有明显的改善作用。

关键词：慢性前列腺炎信息-知识-信念-行为模式健康干预

State Accurate Representation and Performance Prediction Algorithm Optimization for Industrial Equipment Based on Digital Twin

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Intelligent Automation & Soft Computing 2023年第9期37卷 2999-3018页

作者： ying bai Xiaoti Ren Hong Li School of Artificial Intelligence and Big Data Hefei UniversityHefei230601China Anhui Imagine Industrial Technology Co. Ltd.Hefei230088China

The combination of the Industrial Internet of Things(IIoT)and digital twin(DT)technology makes it possible for the DT model to realize the dynamic perception of equipment status and ***,conventional digital modeling is weak in the fusion and adjustment ability between virtual and real *** performance prediction based on experience greatly reduces the inclusiveness and accuracy of the *** this paper,a DT-IIoT optimization model is proposed to improve the real-time representation and prediction ability of the key equipment ***,a global real-time feedback and the dynamic adjustment mechanism is established by combining DT-IIoT with algorithm ***,a strong screening dual-model optimization(SSDO)prediction method based on Stacking integration and fusion is proposed in the dynamic regulation *** screening and multi-round optimization are used to improve the prediction accuracy of the evolution ***,tak-ing the boiler performance of a power plant in Shanxi as an example,the accurate representation and evolution prediction of boiler steam quantity is *** results show that the real-time state representation and life cycle performance prediction of large key equipment is optimized through these *** self-lifting ability of the Stacking integration and fusion-based SSDO prediction method is 15.85%on average,and the optimal self-lifting ability is 18.16%.The optimization model reduces the MSE loss from the initial 0.318 to the optimal 0.1074,and increases R2 from the initial 0.731 to the optimal *** adaptability and reliability of the model are comprehensively improved,and better prediction and analysis results are *** ensures the stable operation of core equipment,and is of great significance to comprehensively understanding the equipment status and performance.

关键词： Digital twin(DT) digital representation transfer learning dual model optimization information fusion