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Micro-strain regulation strategy to stabilize perovskite lattice based on the categories and impact of strain on perovskite solar cells

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Journal of Energy Chemistry 2025年第1期100卷 578-604页

作者： Caixia Li Wenwu Liu Shiji Da Lingbin Kong Fen Ran State Key laboratory of Advanced processing and Recycling of Nonferrous Metals Lanzhou University of Technology School of Materials Science and Engineering Lanzhou University of Technology

Photovoltaic metal halide perovskite solar cells(PSCs) convert light to electricity more efficiently than crystalline silicon cells, and the cost of materials used to make them is lower than that of silicon *** efficiency is not a core issue affecting the application of perovskite solar cells in special *** present, stability is the major technical encounters that hinders its further commercial development. Microstrain in PSCs is currently a significant factor responsible for the device's instability. Strain-induced ion migration is widely believed to accelerate perovskite degradation even when external stimuli are ***, it is imperative to study strain to enhance the stability of PSCs. This paper reviews recent developments to understand strain's origin and effect mechanisms on performance of PSCs, including ion migration,failure behavior, defect formation, and its effect on photoelectric properties, stability, and ***, several well-known strain management strategies are systematically introduced based on the strain effect mechanism and strain engineering on the film, providing more clues for further preparation with increased stability. The manipulation of external physical strain applied from films to entire devices has been extensively studied. Furthermore, recommendations for future research directions and chemical approaches have been provided. It is emphasized that strain engineering plays a crucial role in improving the efficiency and longevity of PSCs. Tensile strain causes rapid degradation, while moderate compressive strain and external strain control could improve properties and stability. Efforts should focus on controlling compressive strain to mitigate residual tensile strain and introducing it in a controlled manner. Future research endeavors may focus on exploring these pathways to improve the efficiency and lifespan of PSCs.

关键词： Halide perovskite solar cells Strain origins Strain effects Strain management

Depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite

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International Journal of minerals,Metallurgy and Materials 2025年第2期32卷 335-345页

作者： Feng Zhang Chenyang Zhang Linlin Wu Wei Sun Hongliang Zhang Jianhua Chen Yong Pei Songjiang Li Engineering Research Center of Ministry of education for Carbon Emission Reduction in Metal Resource Exploitation and Utilization Hunan International Joint Research Center for Efficient and Clean Utilization of Critical Metal Mineral ResourcesSchool of Minerals Processing and BioengineeringCentral South UniversityChangsha 410083China State Key laboratory of mineral processing Beijing General Research Institute of Mining&MetallurgyBeijing 100160China Hunan Provincial Key laboratory of Micro&Nano Materials Interfaces Science College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China School of Resources Environment and MaterialsGuangxi UniversityNanning 530004China department of Chemistry Xiangtan UniversityXiangtan 411105China China Railway Resource Group Co.Ltd Beijing 102300China

The depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite still lacked in-depth ***,the depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite was further systematically investigated with experiments and density functional theory(DFT)*** X-ray photoelectric spectroscopy(XPS)results,DFT calculation results,and frontier molecular orbital analysis indicated that sulfite ions were difficult to be adsorbed on sphalerite surface,suggesting that sulfite ions achieved depression effects on sphalerite through other non-adsorption ***,the oxygen content in the surface of sphalerite treated with sulfite ions in creased,which enhanced the hydrophilicity of the sphalerite and further increased the difference in hydrophilicity between sphalerite and ***,sulfite ions were chelated with lead ions to form PbSO_(3)in *** hydrophilic PbSO_(3)was more easily adsorbed on sphalerite than *** interaction between sulfite ions and lead ions could effectively inhibit the activation of *** addition the UV spectrum showed that after adding sulfite ions,the peak of perxanthate in the sphalerite treated xanthate solution was significantly stronger than that in the galena with xanthate solution,indicating that xanthate interacted more readily with sulfite ions and oxygen mo lecules within the sphalerite system,leading to the formation of ***,sulfite ions hardly depressed the flotation of ga lena and could promote the flotation of galena to some *** study deepened the understanding of the depression mechanism o sulfite ions on sphalerite and Pb^(2+)activated sphalerite.

关键词： sphalerite galena sulfite ion density functional theory depression mechanism

Molecule‑Level Multiscale Design of Nonflammable Gel Polymer Electrolyte to Build Stable SEI/CEI for Lithium Metal Battery

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Nano-Micro Letters 2025年第1期17卷 404-423页

作者： Qiqi Sun Zelong Gong Tao Zhang Jiafeng Li Xianli Zhu Ruixiao Zhu Lingxu Wang Leyuan Ma Xuehui Li Miaofa Yuan Zhiwei Zhang Luyuan Zhang Zhao Qian Longwei Yin Rajeev Ahuja Chengxiang Wang Key laboratory for Liquid‑Solid Structural Evolution and processing of Materials(Ministry of education) School of Materials Science and EngineeringShandong UniversityJinan 250061People’s Republic of China Condensed Matter Theory Department of Physics and AstronomyUppsala UniversityUppsala 75120Sweden

The risk of flammability is an unavoidable issue for gel polymer electrolytes(GPEs).Usually,flameretardant solvents are necessary to be used,but most of them would react with anode/cathode easily and cause serious interfacial instability,which is a big challenge for design and application of nonflammable ***,a nonflammable GPE(SGPE)is developed by in situ polymerizing trifluoroethyl methacrylate(TFMA)monomers with flame-retardant triethyl phosphate(TEP)solvents and LiTFSI–LiDFOB dual lithium *** is strongly anchored to PTFMA matrix via polarity interaction between-P=O and-CH_(2)CF_(3).It reduces free TEP molecules,which obviously mitigates interfacial reactions,and enhances flame-retardant performance of TEP *** TEP molecules are also inhibited in solvation of Li^(+),leading to anion-dominated solvation sheath,which creates inorganic-rich solid electrolyte interface/cathode electrolyte interface *** coordination structure changes Li^(+)transport from sluggish vehicular to fast structural transport,raising ionic conductivity to 1.03 mS cm^(-1) and transfer number to 0.41 at 30℃.The Li|SGPE|Li cell presents highly reversible Li stripping/plating performance for over 1000 h at 0.1 mA cm^(−2),and 4.2 V LiCoO_(2)|SGPE|Li battery delivers high average specific capacity>120 mAh g^(−1) over 200 *** study paves a new way to make nonflammable GPE that is compatible with Li metal anode.

关键词： Anchoring effect Nonflammable gel electrolyte In situ cross-linked Electrode-electrolyte interface Li metal battery

Fabrication and characteristics of the nc-Si/c-Si heterojunction MAGFET

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Journal of Semiconductors 2009年第11期30卷 34-37页

作者：赵晓锋温殿忠 Key laboratory of Electronics Engineering Collage of Heilongjiang ProvinceHeilongjiang University major Laboratories of Integrated Circuits Heilongjiang University

A MAGFET using an nc-Si/c-Si heterojunction as source and drain was fabricated by CMOS technology, using two ohm-contact electrodes as Hall outputs on double sides of the channel situated 0.7L from the source. The experimental results show that when VDS = -7.0 V, the magnetic sensitivity of the single nc-Si/c-Si heterojunction magnetic metal oxide semiconductor field effect transistor （MAGFET） with an L ： W ratio of 2 ： 1 is 21.26 mV/T, and that with an L ： W ratio of 4 ： 1 is 13.88 mV/T. When the outputs of double nc-Si/c-Si heterojunction MAGFETs with an L ： W ratio of 4 ： 1 are in series, their magnetic sensitivity is 22.74 mV/T, which is an improvement of about 64% compared with that of a single nc-Si/c-Si heterojunction MAGFET.

关键词： nc-Si/c-Si heterojunction MAGFET CMOS technology serial output magnetic sensitivity

Stabilities of delay stochastic McKean-Vlasov equations in the G-framework

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Science China(Information Sciences) 2025年第1期 255-277页

作者： Haiyan YUAN Quanxin ZHU department of Mathematics Heilongjiang Institute of Technology Key laboratory of Computing and Stochastic Mathematics (Ministry of education) School of Mathematics and Statistics Hunan Normal University

This article focuses on a type of stochastic Mc Kean-Vlasov equation in the G-framework(G-SMVE) and addresses the stability issue for delay stochastic Mc Kean-Vlasov equations in the G-framework(G-SMVDEs). Distribution dependence and uncertainty prevent us from directly applying the stochastic analysis method for stochastic Mc Kean-Vlasov equations(SMVEs)to G-SMVEs directly. To overcome this difficulty, we introduce definitions, including the derivative of a function with a law under the G-expectation and the Lions derivatives. Then we construct a new G-It? formula for G-SMVEs according to the G-It? formula for stochastic differential equations in the G-framework(G-SDEs) and the It? formula for SMVEs. Using the new G-It? formula and the Lyapunov functional method, we investigate the moment exponential stability and almost sure asymptotic stability of G-SMVDEs. To overcome the difficulty in obtaining the distribution dependence of the exact solution to the G-SMVDE, we introduce the empirical measure and the corresponding interacting particle system, and then prove the stability equivalence between the underlying G-SMVDE and the corresponding interacting particle system. Two examples are used to confirm our theoretical results.

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Acetyl-11-keto-beta-boswellic acid promotes sciatic nerve repair after injury: molecular mechanism

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Neural Regeneration Research 2022年第12期17卷 2778-2784页

作者： Yao Wang Zong-Liang Xiong Xiang-Lin Ma Chong Zhou Mo-Han Huo Xiao-Wen Jiang Wen-Hui Yu department of Veterinary Medicine Northeast Agricultural UniversityHarbinHeilongjiang ProvinceChina College of Life Sciences Northeast Agricultural UniversityHarbinHeilongjiang ProvinceChina Key laboratory of heilongjiang education department for Common Animal Disease Prevention and Treatment Northeast Agricultural UniversityHarbinHeilongjiang ProvinceChina Institute of Chinese Veterinary Medicine Northeast Agricultural UniversityHarbinHeilongjiang ProvinceChina

Previous studies showed that acetyl-11-keto-beta-boswellic acid(AKBA),the active ingredient in the natural Chinese medicine Boswellia,can stimulate sciatic nerve injury repair via promoting Schwann cell ***,the underlying molecular mechanism remains poorly *** this study,we performed genomic sequencing in a rat model of sciatic nerve crush injury after gastric AKBA administration for 30 *** found that the phagosome pathway was related to AKBA treatment,and brain-derived neurotrophic factor expression in the neurotrophic factor signaling pathway was also highly *** further investigated gene and protein expression changes in the phagosome pathway and neurotrophic factor signaling *** expression in the phagosome pathway was markedly decreased,and brain-derived neurotrophic factor,nerve growth factor,and nerve growth factor receptor expression levels in the neurotrophic factor signaling pathway were greatly ***,expression levels of the inflammatory factors CD68,interleukin-1β,pro-interleukin-1β,and tumor necrosis factor-αwere also *** basic protein-andβ3-tubulin-positive expression as well as the axon diameter-to-total nerve diameter ratio in the injured sciatic nerve were also *** findings suggest that,at the molecular level,AKBA can increase neurotrophic factor expression through inhibiting myeloperoxidase expression and reducing inflammatory reactions,which could promote myelin sheath and axon regeneration in the injured sciatic nerve.

关键词： AKBA axon genomics inflammatory injury and repair myelin sheath myeloperoxidase neurotrophic factor peripheral nerve phagosome pathway regeneration Sprague-Dawley rat

Acupuncture through Baihui (DU20) to Qubin (GB7) mitigates neurological impairment after intracerebral hemorrhage

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Neural Regeneration Research 2018年第8期13卷 1425-1432页

作者： Xiao-Ying Liu Xiao-Hong Dai Wei Zou Xue-Ping Yu Wei Teng Ying Wang Wei-Wei Yu Hui-Hui Ma Qiu-Xin Chen Peng Liu Rui-Qiao Guan Shan-Shan Dong heilongjiang University of Chinese Medicine Harbin Heilongjiang Province China The First Affiliated Hospital of heilongjiang University of Chinese Medicine Harbin Heilongjiang Province China Clinical Key laboratory of Integrated Traditional Chinese and Western Medicine of heilongjiang University of Chinese Medicine HarbinHeilongjiang Province China department of Pharmacology of Dali University Dali Yunnan Province China

Inflammation plays an important role in nerve defects caused by intracerebral hemorrhage. Repairing brain damage by inhibiting the macrophage-inducible C-type lectin/spleen tyrosine kinase （Mincle/Syk） signaling pathway is a potential new target for treating cerebral hemorrhage. In this study, we aimed to determine whether acupuncture through Baihui （DU20） to Qubin （GBT） is an effective treatment for intracerebral hemorrhage through the Mincle/Syk signaling pathway. An intracerebral hemorrhage rat model was established by autol- ogous blood infusion into the caudate nucleus. Acupuncture through Baihui to Qubin was performed for 30 minutes, once every 12 hours, for a total of three times. Piceatannol （34.62 mg/kg）, a Syk inhibitor, was intraperitoneally injected as a control. Modified neurological severity score was used to assess neurological function. Brain water content was measured. Immunohistochemistry and western blot assay were used to detect immunoreactivity and protein expression levels of Minde, Syk, and CARD9. Real-time polymerase chain reaction was used to determine interleukin-1[~ mRNA levels. Hematoxylin-eosin staining was performed to observe histopathological changes. Our re- suits showed that acupuncture through Baihui to Qubin remarkably improved neurological function and brain water content, and inhibited immunoreactivity and expression of Mincle, Syk, CARDg, and interkeukin-1β Moreover, this effect was similar to piceatannol. These find- ings suggest that acupuncture through Baihui to Qubin can improve neurological impairment after cerebral hemorrhage by inhibiting the Mincle/Syk signaling pathway.

关键词： nerve regeneration intracerebral hemorrhage acupuncture Baihui (DU20) Qubin (GBT) inflammation Mincle/Syk signaling pathway nerve protection neural regeneration

Development and validation of a 6-gene signature derived from RNA modification-associated genes for the diagnosis of Acute Stanford Type A Aortic Dissection

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Journal of Geriatric Cardiology 2024年第9期21卷 884-898页

作者： Ting-Ting ZHANG Qun-Gen LI Zi-Peng LI Wei CHEN Chang LIU Hai TIAN Jun-Bo CHUAI department of Cardiovascular Surgery the Second Affiliated Hospital of Harbin Medical UniversityHarbinHeilongjiang ProvinceChina department of Cardiothoracic surgery Heilongjiang Provincial HospitalHarbinHeilongjiang ProvinceChina Future Medical laboratory the Second Affiliated Hospital of Harbin Medical UniversityHarbin 150001HeilongjiangChina

Background Acute Stanford Type A Aortic Dissection(ATAAD)is a critical medical emergency characterized by significant morbidity and *** study aims to identify specific gene expression patterns and RNA modification associated with *** The GSE153434 dataset was obtained from the Gene Expression Omnibus(GEO)*** expression analysis was conducted to identify differential expression genes(DEGs)associated with *** validate the involvement of RNA modification in ATAAD,RNA modification-related genes(M6A,M1A,M5C,APA,A-to-I)were acquired from GeneCards,following by Least Absolute Shrinkage and Selection Operator(LASSO)regression analysis.A gene prediction signature consisting of key genes was established,and Real-time PCR was used to validate the gene expression in clinical *** patients were then divided into high and low-risk groups,and subsequent enrichment analysis,including Gene Ontology(GO),Kyoto Encyclopedia of Genes and Genomes(KEGG),Gene Set Enrichment Analysis(GSEA),Gene Set Variation Analysis(GSVA),and assessments of immune infiltration.A co-expression network analysis(WGCNA)was performed to explore gene-phenotype relationships and identify key *** A total of 45 RNA modification genes were *** gene signatures(YTHDC1,WTAP,CFI,ADARB1,ADARB2,TET3)were developed for ATAAD diagnosis and risk *** analysis suggested the potential involvement of inflammation and extracellular matrix pathways in the progression of *** incorporation of pertinent genes from the GSE147026 dataset into the six-gene signature further validated the model's effectiveness.A significant upregulation in WTAP,ADARB2,and TET3 expression,whereas YTHDC1 exhibited a noteworthy downregulation in the ATAAD *** Six-gene signature could serve as an efficient model for predicting the diagnosis of ATAAD.

关键词： diagnosis Stanford involvement

Acoustic emission characteristics and stress release rate of coal samples in different dynamic destruction time

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International Journal of Mining Science and Technology 2016年第6期26卷 981-988页

作者： Xiao Fukun Liu Gang Zhang Ze Shen Zhiliang Zhang Fengrui Wang Yifei Key laboratory for Ground Pressure and Gas Control in Deep Mining of heilongjiang province Heilongjiang University of Science and Technology

Considering the importance of the prediction of rock burst disasters, and in order to grasp the law of acoustic emission(AE) of coal samples in different dynamic destruction time, the SH-II AE monitoring system was adopted to monitor the failure process of coal samples. The study of the change rule of the AE numbers, energy, ‘b' value and spectrum in the micro crack propagation process of the coal samples shows that as dynamic damage time went by, AE presented high-energy counts and the accumulated counts increased during the compression phase. The AE energy and cumulative counts increased during the elastic stage. The AE blank area increased gradually and the blank lines were more and more obvious in the molding stage. The AE counts and energy showed a trend of decrease in the residual damage *** ‘b' values gradually became sparse, and the large scale cracks percentage compared with micro cracks decreased and the degree of damage decreased. The AE frequency spectrum peak went from the residual damage phase to the molding phase, and finally it was nearly stable, besides the bandwidth of the main frequency is gradually narrowed. Also, the frequency peak changed from single peak frequency to bi-peak frequency and to the single peak frequency. Uniaxial compressive strength is more sensitive than the elastic modulus to dynamic damage time.

关键词： Dynamic destruction time Acoustic emission Outburst-proneness Stress release rate