检索结果-南通市图书馆

Practical evaluation of prelithiation strategies for next-generation lithium-ion batteries

在线全文

学校读者我要写书评

暂无评论

Carbon Energy 2023年第8期5卷 55-77页

作者： Shiming Chen Zhen Wang Meng Zhang Xiaoze Shi Lu Wang Weifeng An Zikun Li Feng Pan luyi yang School of Advanced Materials Peking University Shenzhen Graduate SchoolShenzhenChina BTR New Material Group Co. Ltd.ShenzhenChina R&D Institute Shenzhen BAK Power Battery Co.Ltd.ShenzhenChina

With the increasing market demand for high-performance lithium-ion batteries with high-capacity electrode materials,reducing the irreversible capacity loss in the initial cycle and compensating for the active lithium loss during the cycling process are critical *** recent years,various prelithiation strategies have been developed to overcome these *** these approaches are carried out under a wide range of conditions,it is essential to evaluate their suitability for large-scale commercial *** this review,these strategies are categorized based on different battery assembling stages that they are implemented in,including active material synthesis,the slurry mixing process,electrode pretreatment,and battery ***,their advantages and disadvantages in commercial production are discussed from the perspective of thermodynamics and *** review aims to provide guidance for the future development of prelithiation strategies toward commercialization,which will potentially promote the practical application of next-generation high-energy-density lithium-ion batteries.

关键词： high-energy-density irreversible capacity loss lithium-ion batteries practical application prelithiation

3种粘接剂分别粘接金属托槽至抛光及上釉锆瓷的粘接强度

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

实用口腔医学杂志 2024年第1期40卷 53-57页

作者：曹宇刘佳张惠超许竞予余岭叶素荣杨陆一吉林大学口腔医院正畸科吉林省口腔科学与技术纳米工程重点实验室130021

目的:研究3种粘接剂对抛光及上釉锆瓷与正畸金属托槽粘接强度和耐久性的影响。方法:选用2种通用型粘接剂Single Bond Universal(SBU)和Prime&Bond Universal(PBU),以TransbondTMMIP(TM)为对照分别将抛光组、上釉组锆瓷与上颌中切牙金属... 详细信息

目的:研究3种粘接剂对抛光及上釉锆瓷与正畸金属托槽粘接强度和耐久性的影响。方法:选用2种通用型粘接剂Single Bond Universal(SBU)和Prime&Bond Universal(PBU),以TransbondTMMIP(TM)为对照分别将抛光组、上釉组锆瓷与上颌中切牙金属托槽粘接,试样共6组(n=20)。水浴或水浴+冷热循环储存后测试全部试件剪切粘接强度(SBS),分析断裂形态以及粘接剂残留指数(ARI)。结果:粘接剂(P<0.001)和储存条件(P<0.001)显著影响锆瓷与托槽的剪切粘接强度;抛光或上釉(P=0.09)组间无统计学差异。SBU在各组中都表现出较强的粘接强度和较低的ARI,3种粘接剂间的ARI分数存在显著差异(P<0.001)。结论:粘接金属托槽与抛光及上釉锆瓷时,SBU较PBU和TM有更好的粘接性能。

关键词：通用型粘接剂锆瓷正畸托槽剪切粘接强度

Insights Into the Interfacial Degradation of High-Voltage All-Solid-State Lithium Batteries

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2022年第12期14卷 1-13页

作者： Jiawen Li Yuchen Ji Haoran Song Shiming Chen Shouxiang Ding Bingkai Zhang luyi yang Yongli Song Feng Pan School of Advanced Material Peking University Shenzhen Graduate SchoolShenzhen 518055People’s Republic of China Guangzhou Key Laboratory of Clean Transportation Energy Chemistry School of Chemical Engineering and Light IndustryGuangdong University of TechnologyGuangzhou 51006People’s Republic of China

Poly(ethylene oxide)(PEO)-based solid polymer electrolyte(SPE)is considered as a promising solid-state electrolyte for all-solid-state lithium batteries(ASSLBs).Nevertheless,the poor interfacial stability with high-voltage cathode materials(e.g.,LiCoO_(2))restricts its application in high energy density solid-state ***,high-voltage stable Li_(3)AlF_(6) protective layer is coated on the surface of LiCoO_(2) particle to improve the performance and investigate the failure mechanism of PEO-based *** phase transition unveils that chemical redox reaction occurs between the highly reactive LiCoO_(2) surface and PEO-based SPE,resulting in structure collapse of LiCoO_(2),hence the poor cycle performance of PEO-based ASSLBs with LiCoO_(2) at charging voltage of 4.2 V vs Li/Li+.By sharp contrast,no obvious structure change can be found at the surface of Li_(3)AlF_(6)-coated LiCoO_(2),and the original layered phase was well *** the charging voltage reaches up to 4.5 V vs Li/Li+,the intensive electrochemical decomposition of PEO-based SPE occurs,leading to the constant increase of cell impedance and directly causing the poor *** work not only provides important supplement to the failure mechanism of PEO-based batter-ies with LiCoO_(2),but also presents a universal strategy to retain structure stability of cathode-electrolyte interface in high-voltage ASSLBs.

关键词： Solid-state battery Poly(ethylene oxide) Surface modification Interface stability High-voltage cathode

Influence of electrolyte structural evolution on battery applications:Cationic aggregation from dilute to high concentration

在线全文

学校读者我要写书评

暂无评论

Aggregate

Aggregate 2022年第1期3卷 138-158页

作者： Jiangtao Hu Yuchen Ji Guorui Zheng Weiyuan Huang Yuan Lin luyi yang Feng Pan School of Advanced Materials Peking University Shenzhen Graduate SchoolShenzhenPeople’s Republic of China Chemistry and Chemical Engineering Guangdong Laboratory ShantouPeople’s Republic of China Beijing National laboratory for Molecular Sciences Key Laboratory of PhotochemistryCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijingPeople’s Republic of China

In the context of the rapid expansion of the electric vehicle market,the request for high-energy-density lithium-ion batteries(LIBs)has steadily increased,hence the demand for highly stable *** the past years,efforts have been devoted to the improvement of electrolyte *** a benchmarking breakthrough,the achievement of high concentration electrolyte(HCE)can be attributed to the altered cationic aggregation(i.e.,cation-solvent and cation-anion coordination environment),which offers technical superiority over the widely applied conventional dilute *** recently,based on the understanding of the dilute electrolyte and HCE,the concept of localized HCE(LHCE)has been proposed and extensively *** these findings reveal a roadmap of electrolyte optimization for high-performance LIBs via coordination structure *** elucidating the correlation of structure evolution therein and its critical effects on battery performance,this review aims to establish the design principle of electrolytes based on their structures other than component studies and thereby accelerate the development of high-performance electrolytes.

关键词： cationic aggregate electrolytes Li-ion batteries

Constructing low-valent Ni nanoparticles for highly selective CO_(2) reduction

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2022年第1期33卷 424-427页

作者： Kuanda Xu Shisheng Zheng yang Li Honghao Chu Qi Xiong Zongwei Mei Qinghe Zhao luyi yang Shunning Li Feng Pan School of Advanced Materials Peking University Shenzhen Graduate SchoolShenzhen 518055China

The electroreduction of CO_(2)(CO_(2)RR)into value-added chemicals is a sustainable strategy for mitigating global warming and managing the global carbon ***,developing an efficient and selective catalyst is still the central ***,we developed a simple two-step pyrolysis method to confine low-valent Ni-based nanoparticles within nitrogen-doped carbon(Ni-NC).As a result,such Ni-based nanoparticles can effectively reduce CO_(2)to CO,with a maximum CO Faradaic efficiency(FE)of 98%at an overpotential of 0.8 V,as long as good *** and the density functional theory(DFT)calculation results reveal that low-valent Ni plays a key role in activity and selectivity *** study presents a new understanding of Ni-based CO_(2)RR,and provides a simple,scalable approach to the synthesis of low-valent catalysts towards efficient CO_(2)RR.

关键词： CO_(2)reduction reaction Ni-based catalysts Electrocatalytic selectivity Low-valent catalyst DFT calculation

Coil-to-Stretch Transition of Binder Chains Enabled by“Nano-Combs”to Facilitate Highly Stable SiO_(x) Anode

在线全文

学校读者我要写书评

暂无评论

Energy & Environmental Materials 2022年第4期5卷 1310-1316页

作者： Shida Xue Yanda Fu Zhibo Song Shiming Chen Yuchen Ji Yan Zhao Huizhi Wang Guoyu Qian luyi yang Feng Pan s.xue y.fuz.songs.cheny.jidr.7.qianpro6.l.yangpro6.6.pan school of advanced materialspeking university shenzhen graduate schoolshenzhen 518055china department of mechanical engineering imperial college londonlondon sw72bxuk

The commercialized binder carboxymethyl cellulose sodium(CMC-Na)is considered unsuitable for micro-sized SiO_(x) anode as it cannot endure the large volume change to retain the conductive network during repeated charge/discharge ***,a small amount of silicon nanoparticles(SiNPs)is added during slurry preparation process as“nano-combs”to unfold the convoluted CMC-Na polymer chains so that they undergo a coilto-stretch transition by interaction between polar groups(e.g.,-OH,-COONa)of polymer and SiNPs’large *** maximizing the utilization of binders,a uniform conductive network is constructed with increased interfacial contact with micro-sized SiO_(x).As a result,the SiO_(x) electrode with optimized(10 wt%)SiNPs addition shows significantly improved initial capacity and cycling *** revisiting CMCNa,a currently deemed unqualified binder in SiO_(x) anode,this work gives a brand-new perspective on the failing mechanism of Si-based anode materials and an improving strategy for electrode preparation.

关键词： binding network CMC-Na lithium-ion batteries Si anode SiO_(x)anode

Polymeric Wetting Matrix for a Stable Interface between Solid-state Electrolytes and Li Metal Anode

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Structural Chemistry 2022年第5期41卷 48-54页

作者： Haoran Song Shida Xue Shiming Chen Zijian Wang Yongli Song Jiawen Li Zhibo Song luyi yang Feng Pan School of Advanced Materials Peking University Shenzhen Graduate SchoolShenzhen 518055China

Succinonitrile(SN)based solid-state electrolytes(SSEs)have potential applications in lithium(Li)batteries due to their ease of preparation and high ionic conductivity at room ***,a novel SSE consisting of poly(vinylidene fluoride-hexafluoropropy-lene)(PVDF-HFP),poly(methyl methacrylate)(PMMA)and Li_(1.3)Al_(0.3)Ti_(1.7)(PO_(4))_(3) with SN is fabricated,where PMMA is added to serve as a polymer matrix for better wettability of *** to the addition of PMMA,improved room-temperature ionic conductivity of the SSE is *** importantly,better interfacial contact as well as more stable solid-state electrolyte(SEI)layer between SSE and Li anode can be also *** a result,homogeneous and dendrite-free Li plating can be achieved for over 1000 h in Li symmetric *** coupled with LiNi_(0.5)Mn_(0.3)Co_(0.2)O_(2) cathode and Li anode,the proposed SSE delivers excellent cycling stability and rate capability in *** implementing SSEs with a polymeric wetting agent,this work provides fresh perspectives on stabilizing the interface between SSEs and Li metal anodes.

关键词： Li metal Li dendrite poly(methyl methacrylate) succinonitrile composite solid-state electrolyte

Polymer matrix mediated solvation of LiNO3 in carbonate electrolytes for quasi-solid high-voltage lithium metal batteries

在线全文

学校读者我要写书评

暂无评论

Nano Research 2020年第9期13卷 2431-2437页

作者： Zijian Wang Kai yang Yongli Song Hai Lin Ke Li Yanhui Cui luyi yang Feng Pan School of Advanced Materials Peking University Shenzhen Graduate School Shenzhen 518055China

Lithium(Li)metal is one of the most promising anodes for next-generation energy storage ***,the Li dendrite formation and unstable solid-electrolyte interface(SEI)have hindered its further *** nitrate(LiNO3)is extensively used as an effective electrolyte additive in ether-based electrolytes to improve the stability of lithium ***,it is rarely utilized in carbonate electrolytes due to its low ***,a novel gel polymer electrolyte(GPE)consisting of poly(vinylidene fluoride)(PVDF),poly(methyl methacrylate)(PMMA),poly(ethylene oxide)(PEO)with LiN03 additive is proposed to solve this *** this GPE,polyether-based PEO serves as a matrix for dissolving LiNO3 which can be decomposed into a fast Li-ion conductor(Li3N)in conventional carbonate electrolytes to enhance the stability and Li^+conductivity of the SEI *** a result,dendrite formation is effectively suppressed,and a significantly improved average Coulombic efficiency(CE)of 97.2%in Li-Cu cell is *** using this novel GPE coupled with Li anode and LiNi0.5Mn0.3Co0.2O2(NMC532),excellent capacity retention of 94.1%and high average CE of over 99.2%are obtained after 200 cycles at 0.5 *** work presents fresh insight into practical modification strategies on high-voltage Li metal batteries.

关键词： Li anode gel polymer electrolyte lithium nitrate Li dendrite electrolyte additives

Melatonin improves synapse development by PI3K/Akt signaling in a mouse model of autism spectrum disorder

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2024年第7期19卷 1618-1624页

作者： luyi Wang Man Xu Yan Wang Feifei Wang Jing Deng Xiaoya Wang Yu Zhao Ailing Liao Feng yang Shali Wang Yingbo Li Institute of Neuroscience Department of PhysiologySchool of Basic Medical ScienceChongqing Medical UniversityChongqingChina Department of Pediatric Chongqing University Fuling HospitalChongqingChina Department of Neurosurgery Xinqiao HospitalArmy Medical UniversityChongqingChina Department of Pathology Affiliated Hospital of North Sichuan Medical CollegeNanchongSichuan ProvinceChina NHC Key Laboratory of Birth Defects and Reproductive Health Chongqing Population and Family Planning Science and Technology Research InstituteChongqingChina China National Clinical Research Center for Neurological Diseases Beijing Tiantan HospitalCapital Medical UniversityBeijingChina Advanced Innovation Center for Human Brain Protection Capital Medical UniversityBeijingChina

Autism spectrum disorders are a group of neurodevelopmental disorders involving more than 1100 genes,including Ctnnd2 as a candidate ***2knockout mice,serving as an animal model of autis m,have been demonstrated to exhibit decreased density of dendritic *** role of melatonin,as a neuro hormone capable of effectively alleviating social interaction deficits and regulating the development of dendritic spines,in Ctnnd2 deletion-induced nerve injury remains unclea *** the present study,we discove red that the deletion of exon 2 of the Ctnnd2 gene was linked to social interaction deficits,spine loss,impaired inhibitory neurons,and suppressed phosphatidylinositol-3-kinase(PI3K)/protein kinase B(Akt) signal pathway in the prefrontal *** findings demonstrated that the long-term oral administration of melatonin for 28 days effectively alleviated the aforementioned abnormalities in Ctnnd2 gene-knockout ***,the administration of melatonin in the prefro ntal cortex was found to improve synaptic function and activate the PI3K/Akt signal pathway in this *** pharmacological blockade of the PI3K/Akt signal pathway with a PI3K/Akt inhibitor,wo rtmannin,and melatonin receptor antagonists,luzindole and 4-phenyl-2-propionamidotetralin,prevented the melatonin-induced enhancement of GABAergic synaptic *** findings suggest that melatonin treatment can ameliorate GABAe rgic synaptic function by activating the PI3K/Akt signal pathway,which may contribute to the improvement of dendritic spine abnormalities in autism spectrum disorders.

关键词： autism Ctnnd2 deletion GABAergic neurons melatonin PI3K/Akt signal pathway prefrontal cortex social behavior spine density synaptic-associated proteins