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Review on current development of polybenzimidazole membrane for lithium battery

Journal of Energy Chemistry 2024年第4期91卷 579-608页

作者： yonggui Deng Arshad Hussain Waseem Raza Xingke Cai Dongqing liu Jun Shen College of Mechatronics and Control Engineering Shenzhen UniversityShenzhen 518060GuangdongChina Interdisciplinary Research Center for Hydrogen Technologies and Carbon Management(IRC-HTCM) King Fahd University of Petroleum&MineralsKFUPM Box 504031261 DhahranSaudi Arabia Institute for Advanced Study Shenzhen UniversityShenzhen 518060GuangdongChina

With the rapid development of portable technology,lithium batteries have emerged as potential candidates for high-performance energy storage systems owing to their high energy density and cycling stability.Among the key components of a lithium battery system,the separator plays a critical role as it directly influences the battery performance benchmark(cycling performance and safety).However,traditional polyolefin separators(polypropylene/polyethylene)are unable to meet the demands of highperformance and safer battery systems due to their poor electrolyte compatibility,thermal runaways,and ultimate growth of dendrites.In contrast,membranes fabricated using polybenzimidazole(PBI)exhibit excellent electrolyte wettability and outstanding thermal dimensional stability,thus holding great potential as separators for high-performance and high-safety batteries.In this paper,we present a comprehensive review of the general requirements for separators,synthesis technology for separators,and research trends focusing PBI membranes in lithium batteries to alleviate the current commercial challenges faced by conventional polyolefin separators.In addition,we discuss the future development direction for PBI battery separators by considering various factors such as production cost,ecological footprint,preparation technology,and battery component compatibility.By exploring these perspectives,we aim to promote the continued application and exploration of PBI-based materials to advance lithium battery technology.

关键词： Lithium batteries Separators Porous separators Polybenzimidazole Membrane

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Ionic potency regulation of coagulation bath induced by saline solution to control over the pore structure of PBI membrane for highperformance lithium metal batteries

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Journal of Energy Chemistry 2024年第7期94卷 288-298页

作者： Arshad Hussain Waseem Raza Andleeb Mehmood Sana Jalees Lihong Ao yonggui Deng Aymeric Ramiere Xingke Cai Dongqing liu College of Civil and Transportation Engineering Shenzhen UniversityShenzhen 518060GuangdongChina Institute for Advanced Study Shenzhen UniversityShenzhen 518060GuangdongChina Institute of Carbon Neutrality Zhejiang Wanli UniversityNingbo 315100ZhejiangChina College of Light Industry and Chemical Engineering Dalian Polytechnic UniversityDalian 116034LiaoningChina College of Physics and Optoelectronic Engineering Shenzhen UniversityShenzhen 518060GuangdongChina College of Mechatronics and Control Engineering Shenzhen UniversityShenzhen 518060GuangdongChina

In this study,we have explored the use of water as a non-solvent for tuning the microstructure of poly-benzimidazole(PBI)membranes,which are potential separators for lithium metal batteries(LMBs).The traditional method for membrane synthesis called nonsolvent-induced phase separation(NIPS),usually relies on hazardous and costly organic non-solvents.By dissolving sodium chloride(Nacl)in water,we could adjust the water ionic potency and the exchange speed of the non-solvent with the DMAC solution to change the micropore structure of the PBI membrane.With increasing Nacl concentration,the micro-pores in the PBI membrane transitioned from finger-like to sponge-like morphology.Compared to com-mercial separators like the Celgard separator,the PBI membrane with sponge-like micropores exhibited better regulation of lithium deposition and improved Li^(+) transportation capability due to its good wetta-bility with the electrolyte.Consequently,the PBI membrane-based Li/Li symmetric cell and Li/LiFePO_(4) full cell demonstrated superior performance compared to the Celgard-based ones.This research proposes an eco-friendly and scalable synthetic approach for fabricating commercial separators for LMBs,addressing the issue of lithium dendrite growth and improving overall battery safety and performance.

关键词： Lithium metal-based battery Salt-induced Polybenzimidazole Tunablemorphology lonic potency

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Disruption of PABPN1 phase separation by SNRPD2 drives colorectal cancer cell proliferation and migration through promoting alternative polyadenylation of CTNNBIP1

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Science China(Life Sciences) 2024年第6期67卷 1212-1225页

作者： Zhijie Hu Mengxia Li Yufeng Chen liutao Chen Yuting Han Chengyong Chen Xin Lu Nan You Yawen Lou Yingye Huang Zhanfeng Huo Chao liu Cheng Liang Susu liu Ke Deng Liangfu Chen Shangwu Chen Guohui Wan Xiaojian Wu yonggui Fu Anlong Xu State Key Laboratory of Biocontrol Guangdong Province Key Laboratory of Pharmaceutical Functional GenesDepartment of BiochemistrySchool of Life SciencesSun Yat-sen UniversityGuangzhou 510275China Department of General Surgery(Colorectal Surgery)&Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases&Biomedical Innovation Center The Sixth Affiliated HospitalSun Yat-sen UniversityGuangzhou 510655China National-Local Joint Engineering Laboratory of Druggability and New Drug Evaluation National Engineering Research Center for New Drug and Druggability(cultivation)Guangdong Province Key Laboratory of New Drug Design and EvaluationSchool of Pharmaceutical SciencesSun Yat-sen UniversityGuangzhou 510006China School of Life Sciences Beijing University of Chinese MedicineBeijing 100029China

Generally shortened 3′UTR due to alternative polyadenylation(APA)is widely observed in cancer,but its regulation mechanisms for cancer are not well characterized.Here,with profiling of APA in colorectal cancer tissues and poly(A)signal editing,we firstly identified that the shortened 3′UTR of CTNNIBP1 in colorectal cancer promotes cell proliferation and migration.We found that liquid-liquid phase separation(LLPS)of PABPN1 is reduced albeit with higher expression in cancer,and the reduction of LLPS leads to the shortened 3′UTR of CTNNBIP1and promotes cell proliferation and migration.Notably,the splicing factor SNRPD2 upregulated in colorectal cancer,can interact with glutamic-proline(EP)domain of PABPN1,and then disrupt LLPS of PABPN1,which attenuates the repression effect of PABPN1 on the proximal poly(A)sites.Our results firstly reveal a new regulation mechanism of APA by disruption of LLPS of PABPN1,suggesting that regulation of APA by interfering LLPS of 3′end processing factor may have the potential as a new way for the treatment of cancer.

关键词： alternative polyadenylation colorectal cancer CTNNBIP1 PABPN1 liquid-liquid phase separation SNRPD2

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Dynamic thermo-mechanical behaviors of SME TiNi alloys subjected to shock loading

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Acta Mechanica Sinica 2020年第6期36卷 1336-1349,I0004页

作者： Lingyan Shen yonggui liu Mengmeng Hui School of Civil Engineering Henan Polytechnic UniversityJiaozuo454000China CAS Key Laboratory for Mechanical Behavior and Design of Materials University of Science and Technology of ChinaHefei230027China

Dynamic thermo-mechanical coupling behaviors of shape memory TiNi alloy in the strain rate ranging from 300 s^−1 to 2000 s^−1 are investigated by the split Hopkinson pressure bar(SHPB)device with an infrared(IR)detection system.In stress–strain space,dynamic response shows a strong strain hardening property,however,in stress–temperature space,transformation path is particularly sensitive to the strain rate.The corresponding temperature evolution measured synchronously shows that local temperature increased associated with the forward phase transition,and it would keep the loading maximum value unchanged or decreased for unloading,depending on the strain rate.Besides,local temperature evolution was consistent with the transformation stress and its values at different points are the same.Temperature evolution and transformation deformation mechanism is then analyzed by a simple one-dimensional model.The results show that latent heat and dissipated energy are responsible for temperature variation.Furthermore,the temperature evolution with strain rate reveals that with the increase of strain rate,the phase transformation deformation mechanism undergoes a transformation from phase transition fronts propagation during lower strain rates to combination of local nucleation and front propagation during middle strain rate and to uniform nucleations during higher strain rates.The results are helpful for a passive shape memory alloy(SMA)micro-valve design.

关键词： Thermal-mechanical coupling Temperature evolution Strain rate effect Phase transformation path

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帕罗西汀联合安非他酮致5-羟色胺综合征2例

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中华精神科杂志 2024年第2期57卷 105-107页

作者：刘小溪袁勇贵临沂市中心医院精神卫生科临沂276400 东南大学附属中大医院心理精神科南京210009

5-羟色胺综合征(serotonin syndrome,SS)是一种少见的、由于药物及其相互作用产生的中枢和外周神经系统5-HT过多所致的药物副反应综合征,多见于使用5-HT能药物,或单胺氧化酶抑制剂(monoamine oxidase inhibitors)联用5-HT能药物后出现... 详细信息

5-羟色胺综合征(serotonin syndrome,SS)是一种少见的、由于药物及其相互作用产生的中枢和外周神经系统5-HT过多所致的药物副反应综合征,多见于使用5-HT能药物,或单胺氧化酶抑制剂(monoamine oxidase inhibitors)联用5-HT能药物后出现。因该综合征进展快,重症可致死亡,现报道2例帕罗西汀联用安非他酮后导致SS患者的诊疗经过,以提醒临床医生在联用此类药物时应注意识别早期症状,避免发生严重后果。

关键词：帕罗西汀安非他酮 5-羟色胺综合征

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生成式人工智能赋能学习设计研究

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电化教育研究 2024年第7期45卷 73-80页

作者：单俊豪刘永贵南京邮电大学教育科学与技术学院江苏南京210023

学习设计是促进学生多元学习体验,提升学习绩效的基础。生成式人工智能的教育应用改变了传统知识观与学习观,也为创新学习设计模式提供了契机。研究首先从学习目标关注素养跃迁、学习场景强调实境探究、学习体验注重学习支持和学习评价... 详细信息

学习设计是促进学生多元学习体验,提升学习绩效的基础。生成式人工智能的教育应用改变了传统知识观与学习观,也为创新学习设计模式提供了契机。研究首先从学习目标关注素养跃迁、学习场景强调实境探究、学习体验注重学习支持和学习评价侧重证据启发四个方面论述了生成式人工智能赋能学习设计的理念嬗变;其次,探讨了生成式人工智能赋能学习设计的基本内涵,提出了生成式人工智能应响应打造“以人为本”的适性学习理念、设计指向“教—学—评”一体化的学习流程以及构建“师—机—生”互融共生的学习新样态三项核心目标;再次,将生成式人工智能赋能学习设计的角色分为“经验型学习设计师”“智慧助学同伴”“智能点评专家”三类,并基于4C/ID模型提炼生成式人工智能赋能学习设计的操作性步骤;最后,从教师数字素养、学生学习态度及生成式人工智能技术的教育专业性三个方面探讨技术赋能学习设计的阻碍,并有针对性地提出应对之策。

关键词：生成式人工智能学习设计学习体验教—学—评一体化人机协同教学

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突出用户相似性还是突出产品相似性?——推荐解释框架对消费者点击意愿的影响研究

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外国经济与管理 2024年第3期46卷 3-17页

作者：王永贵刘冬梅浙江工商大学浙江杭州310018 对外经济贸易大学国际商学院北京100029

本文基于社会影响理论,通过3个实验考察了突出用户之间相似性的框架和突出产品之间相似性的框架对消费者点击意愿的影响,并剖析了感知产品匹配性在其中所发挥的中介效应以及产品类型和推荐数量在其中所扮演的调节角色。研究表明:与突出... 详细信息

本文基于社会影响理论,通过3个实验考察了突出用户之间相似性的框架和突出产品之间相似性的框架对消费者点击意愿的影响,并剖析了感知产品匹配性在其中所发挥的中介效应以及产品类型和推荐数量在其中所扮演的调节角色。研究表明:与突出产品之间相似性的框架相比,突出用户之间相似性的框架会使消费者产生更高的感知产品匹配性,进而增强其点击意愿。但这种框架效应会受到产品类型的调节作用:对于享乐型产品而言,突出用户之间相似性的框架往往更加有效;而对于实用型产品而言,突出产品之间相似性的框架则更加有效。而且推荐解释的框架效应只有在推荐数量为一个时才发生;当推荐数量为多个时,感知产品匹配性和点击意愿在两种推荐解释框架条件下均无显著差异。本文不仅推进了个性化推荐方向的研究,也拓展了社会影响理论和框架效应理论在市场营销领域的应用研究,并为企业实施个性化推荐策略提供了重要的实践启示。

关键词：个性化推荐解释框架感知产品匹配性推荐数量产品类型

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融合多个性化桥和自监督学习的跨域推荐算法

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计算机科学与探索 2024年第7期18卷 1792-1805页

作者：王永贵刘丹妮辽宁工程技术大学软件学院辽宁葫芦岛125105

针对跨域推荐系统中目标域中项目交互较少的用户,提出一种融合多个性化桥和自监督学习的跨域推荐算法(MS-PTUPCDR)。首先,在目标域加入变分二部图编码器,使用变分推理框架生成潜在变量,目标域用户表示聚合其同构邻居信息。其次,将用户... 详细信息

针对跨域推荐系统中目标域中项目交互较少的用户,提出一种融合多个性化桥和自监督学习的跨域推荐算法(MS-PTUPCDR)。首先,在目标域加入变分二部图编码器,使用变分推理框架生成潜在变量,目标域用户表示聚合其同构邻居信息。其次,将用户单一偏好桥扩展为用户多个性化偏好桥,将用户在多源域可转移的用户因子转移到目标域,在目标域加入多头注意力机制融合分别来自不同源域转换的用户潜在因子作为自监督学习的辅助任务。最后,在目标域中将聚合用户邻居因子和融合后的用户多源域转移用户因子进行自监督学习。在目标域通过用户自监督学习后的用户因子和目标域项目因子点积进行目标域项目评分预测。算法在Amazon和MovieLens两个数据集上进行实验,结果表明算法在MAE和RMSE两个评价指标上优于对比基线算法,在两个数据集上与最优对比基线算法相比,MAE平均提升1.96%,RMSE平均提升1.92%,验证了算法的有效性。

关键词：跨域推荐用户多个性化偏好桥多头注意力机制自监督学习变分二部图编码器

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Reconstruction of measurements in state estimation strategy against deception attacks for cyber physical systems

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Control Theory and Technology 2018年第1期16卷 1-13页

作者： Qinxue LI Bugong XU Shanbin LI yonggui liu Delong CUI School of Automation Science and Engineering South China University of Technology Guangzhou Guangdong 510640 China College of Computer and Electronic Information Guangdong University of Petrochemical Technology Maoming Guangdong 525000 China

Without the known state equation, a new state estimation strategy is designed to be against malicious attacks for cyber physical systems. Inspired by the idea of data reconstruction, the compressive sensing （CS） is applied to reconstruction of residual measurements after the detection and identification scheme based on the Markov graph of the system state, which increases the resilience of state estimation strategy against deception attacks. First, the observability analysis is introduced to decide the triggering time of the measurement reconstruction and the damage level from attacks. In particular, the dictionary learning is proposed to form the over-completed dictionary by K-singular value decomposition （K-SVD）, which is produced adaptively according to the characteristics of the measurement data. In addition, due to the irregularity of residual measurements, a sampling matrix is designed as the measurement matrix. Finally, the simulation experiments are performed on 6-bus power system. Results show that the reconstruction of measurements is completed well by the proposed reconstruction method, and the corresponding effects are better than reconstruction scheme based on the joint dictionary and the traditional Gauss or Bernoulli random matrix respectively. Especially, when only 29% available clean measurements are left, performance of the proposed strategy is still extraordinary, which reflects generality for five kinds of recovery algorithms.

关键词： State estimation deception attacks cyber physical systems reconstruction of measurements compressivesensing

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42CrMo钢表面激光熔覆钴基金刚石耐磨层组织及性能

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表面技术 2024年第5期53卷 96-107页

作者：罗亮斌梁国星刘东刚郝新辉黄永贵赵建太原理工大学机械与运载工程学院精密加工山西省重点实验室太原030024 太原理工大学高端精密刀具系统省技术创新中心太原030024

目的增强42CrMo钢的耐磨性,改善其严重的磨损失效情况。方法采用激光熔覆技术同步送粉的方式在42CrMo钢表面制备金刚石/WC颗粒增强钴基复合熔覆层,借助SEM、EDS、XRD、显微硬度仪和多功能综合性能测试仪,研究了熔覆层宏观形貌与微观组... 详细信息

目的增强42CrMo钢的耐磨性,改善其严重的磨损失效情况。方法采用激光熔覆技术同步送粉的方式在42CrMo钢表面制备金刚石/WC颗粒增强钴基复合熔覆层,借助SEM、EDS、XRD、显微硬度仪和多功能综合性能测试仪,研究了熔覆层宏观形貌与微观组织、物相组成、显微硬度与耐磨性。结果使用Ti/TiC粉末对金刚石进行预处理可以改善其烧蚀和石墨化;适量ZrH2提升了熔覆层宽厚比,促进了熔池对流传质作用,同时,活性元素Zr改善了金刚石颗粒的润湿性能,提高了黏结相对金刚石的把持力。熔覆层多道搭接过渡均匀,其显微组织主要由细小枝晶及致密网状碳化物共晶组成,熔覆层与基体结合区域反应生成了平面晶组织,进而提高了熔覆层结合强度。激光熔覆热特性使W2C、ZrC、γ-(Co,Fe)、M6W6C、CoZr_(2)、(Ti,Zr)O_(2)、TiCx、Co_(3)Ti等物相存在于熔覆层内,细晶强化及弥散强化作用使得熔覆层的平均显微硬度(1002HV0.2)是基体的3倍。熔覆层平均磨损量是基体平均磨损量的1/2,熔覆层平均摩擦因数也明显低于基体,表明熔覆层的耐磨性能得到提升,其磨损机制主要为磨粒磨损,熔覆层内金刚石因承担摩擦载荷而钝化,但磨痕中的金刚石完整且未发生脱落。结论金刚石/WC颗粒增强钴基复合熔覆层的耐磨性显著提高,可用于42CrMo钢表面强化。

关键词：激光熔覆复合熔覆层显微组织显微硬度耐磨性

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