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Efficient organic-inorganic hybrid cathode interfacial layer enabled by polymeric dopant and its application in large-area polymer solar cells

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Science China Chemistry 2019年第1期62卷 67-73页

作者： Sheng Dong kai Zhang Xiang liu Qingwu yin Hin-Lap Yip Fei Huang Yong Cao Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of Technology

An organic-inorganic hybrid cathode interfacial layer(CIL) was developed by doping ZnO with the naphthalene-diimide based derivative NDI-PFNBr. It was found the resulting organic-inorganic hybrid CIL showed apparently improved conductivity and could act as an effective cathode interlayer to modify indium tin oxide(ITO) transparent electrodes. As a result, by employing the blend of PTB7-Th:PC71BM as the photoactive layer, the inverted polymer solar cells(PSCs) exhibited a remarkable enhancement of power conversion efficiency(PCE) from 8.52% for the control device to 10.04% for the device fabricated with the hybrid CIL. Moreover, all device parameters were simultaneously improved by using this hybrid CIL. The improved open-circuit voltage(VOC) was attributed to the reduced work function of the ITO cathode, whereas the enhancements in fill factor(FF) and short-circuit current density(JSC) were assigned to the increased conductivity and more effective charge extraction and collection at interface. Encouragingly, when the thickness of the hybrid CIL was increased to 80 nm, the resulting device could still keep a PCE of 8.81%, exhibiting less thickness dependence. Considering these advantages, 16 and 93 cm2large-area PSCs modules were successfully fabricated from the hybrid CIL by using doctor-blade coating techniques and yielded a remarkable PCE of8.05% and 4.49%, respectively. These results indicated that the hybrid CIL could be a promising candidate to serve as the cathode interlayer for high-performance large-area inverted PSCs.

关键词： hybrid cathode interfacial layer large-area module doctor-blade coating polymer solar cells

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A Systemic Review and Meta-analysis of the Effect of SARS-CoV-2 Infection on Sperm Parameters

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Research 2022年第2期2022卷 47-59页

作者： Xi Chen Jinli Ding Miao liu kai Xing Peng Ye Junxia Min Yan Zhang Tailang yin Reproductive Medical Centre Renmin Hospital of Wuhan UniversityWuhanChina Department of Pediatrics Renmin Hospital of Wuhan UniversityWuhanChina Department of Cardiovascular Surgery Renmin Hospitalof Wuhan UniversityWuhanChina Deprtment of Pharmacy Renmin Hospital of Wuhan UniversityWuhanChina The First Afiliated Hospial Institute of Translational MedicineZhejiang University School of MedicineHangzhouChina Department of Clinical Laboratory Renmin Hospital of Wuhan UniversityWuhanChina

*** studies examined the putativefets of SARS-Cov-2infectionon spem parametersHoweve,the resuls remain *** this study,we conducted the most up-to-date systematic review and meta-analysis to investigate the effect of SARS-CoV-2 infection on sperm quality in COVID-19-positive and COVID-19-negative male *** databases were searched forliterature released through June 10,2022,containing estimates for the outcomes of interest Using a random-fects model(REM)or a fixed-ffects model(FEM),we analyzed the pooled *** quality of all included studies was asssed by the Newcastle-Ottawa scale In addition,we performed aquanttative and subgroup analysis of semen data across all included *** studies were extracted from 10 publications,involving a total of 1174 participates for *** parameters of 521 COVID-19 male patients and 653 controls were *** 8 case-control studies,the pooled mean dfference(MD)of total sperm motility was-5.37%(95%confidence interval(CI):-8.47 to-2.28:<0.05),suggesting that total motility was significantly impaired inmale COVID-19 *** analysis showed a significant decreasein semen volume,sperm concentration,and total motility in 238 patients with arecovery timeof less than 90 ***,in the other 6 included pre-to post-COVID-19 studies,the pooled MDs of sperm concentration,total sperm count,total motility,progressivemotility,and normal morphology were6.54×10^(6)/ml(95%CI:-10.27 to-2.81;p<0.05),38.89×10^(6)(95%CI:-59.20 to-18.58;p<0.05),-7.21%(95%CI:-14.36 to-0.07;p<0.05),-5.12%(95%CI:-8.71 to-1.53;p<0.05),and-1.52%(95%CI:-2.88 to-0.16;p<0.05),respectively,which indicate SARS-CoV-2 infection significantly affected these five sperm *** results revealed that SARS-CoV-2 infection was significantly correlated with decreased sperm *** six sperm parameters,total motility and sperm concentration were the most significantly decr

关键词： motility impaired analysis

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Modification strategies on nickel-based electrocatalysts for energyefficient anodic reactions

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Nano Research 2025年第1期18卷 50-75页

作者： Jingwen Yu Yunliang liu Naiyun liu Yaxi Li Yuanyuan Cheng Peng Cao Yixian liu Xinya Yuan Xinyue Zhang Haitao Li Institute for Energy Research School of Chemistry and Chemical EngineeringJiangsu UniversityZhenjiang 212013China

Electrocatalytic chemical oxidation(ECO)is an energy-efficient anodic reaction alternative to the oxygen evolution reaction(OER).ECO lowers the reaction potential and yields higher-value fine chemicals at the *** catalyst material plays a crucial role in influencing and determining ECO *** catalyst performance encompasses aspects such as activity,stability,selectivity and *** electrocatalysts have garnered significant attention for their exceptional performance and widespread use in ECO *** modifying nickel-based electrocatalysts,the formation of NiOOH active centers can be *** such as adjusting size and morphology,doping,introducing defects and constructing heterojunctions are advantageous for enhancing *** the rapid advancements in related research fields,it is imperative to comprehend the mechanisms of nickel-based electrocatalysts in ECO and develop innovative *** article provides an overview of the modification strategies of nickel-based electrocatalysts,as well as their applications and mechanisms in ECO.

关键词： anodic reactions electrocatalytic chemical oxidation nickel-based electrocatalysts NiOOH modification strategies

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The effects of exercise interventions on brain-derived neurotrophic factor levels in children and adolescents:a meta-analysis

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Neural Regeneration Research 2025年第5期20卷 1513-1520页

作者： Xueyun Shao Longfei He Yangyang liu Physical Education School Shenzhen UniversityShenzhenGuangdong ProvinceChina Shenzhen Institute of Neuroscience ShenzhenGuangdong ProvinceChina

Brain-derived neurotrophic factor is a crucial neurotrophic factor that plays a significant role in brain health. Although the vast majority of meta-analyses have confirmed that exercise interventions can increase brain-derived neurotrophic factor levels in children and adolescents, the effects of specific types of exercise on brain-derived neurotrophic factor levels are still controversial. To address this issue, we used meta-analytic methods to quantitatively evaluate, analyze, and integrate relevant studies. Our goals were to formulate general conclusions regarding the use of exercise interventions, explore the physiological mechanisms by which exercise improves brain health and cognitive ability in children and adolescents, and provide a reliable foundation for follow-up research. We used the Pub Med, Web of Science, Science Direct, Springer, Wiley Online Library, Weipu, Wanfang, and China National Knowledge Infrastructure databases to search for randomized controlled trials examining the influences of exercise interventions on brain-derived neurotrophic factor levels in children and adolescents. The extracted data were analyzed using Review Manager 5.3. According to the inclusion criteria, we assessed randomized controlled trials in which the samples were mainly children and adolescents, and the outcome indicators were measured before and after the intervention. We excluded animal experiments, studies that lacked a control group, and those that did not report quantitative results. The mean difference(MD;before versus after intervention) was used to evaluate the effect of exercise on brain-derived neurotrophic factor levels in children and adolescents. Overall, 531 participants(60 children and 471 adolescents, 10.9–16.1 years) were included from 13 randomized controlled trials. Heterogeneity was evaluated using the Q statistic and I^(2) test provided by Review Manager software. The meta-analysis showed that there was no heterogeneity among the studies(P = 0.67,

关键词： adolescents brain-derived neurotrophic factor children exercise meta-analysis randomized controlled trials

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The role of axon guidance molecules in the pathogenesis of epilepsy

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Neural Regeneration Research 2025年第5期20卷 1244-1257页

作者： Zheng liu Chunhua Pan Hao Huang Department of Neurology Affiliated Hospital of Zunyi Medical UniversityZunyiGuizhou ProvinceChina

Current treatments for epilepsy can only manage the symptoms of the condition but cannot alter the initial onset or halt the progression of the disease. Consequently, it is crucial to identify drugs that can target novel cellular and molecular mechanisms and mechanisms of action. Increasing evidence suggests that axon guidance molecules play a role in the structural and functional modifications of neural networks and that the dysregulation of these molecules is associated with epilepsy susceptibility. In this review, we discuss the essential role of axon guidance molecules in neuronal activity in patients with epilepsy as well as the impact of these molecules on synaptic plasticity and brain tissue remodeling. Furthermore, we examine the relationship between axon guidance molecules and neuroinflammation, as well as the structural changes in specific brain regions that contribute to the development of epilepsy. Ample evidence indicates that axon guidance molecules, including semaphorins and ephrins, play a fundamental role in guiding axon growth and the establishment of synaptic connections. Deviations in their expression or function can disrupt neuronal connections, ultimately leading to epileptic seizures. The remodeling of neural networks is a significant characteristic of epilepsy, with axon guidance molecules playing a role in the dynamic reorganization of neural circuits. This, in turn, affects synapse formation and elimination. Dysregulation of these molecules can upset the delicate balance between excitation and inhibition within a neural network, thereby increasing the risk of overexcitation and the development of epilepsy. Inflammatory signals can regulate the expression and function of axon guidance molecules, thus influencing axonal growth, axon orientation, and synaptic plasticity. The dysregulation of neuroinflammation can intensify neuronal dysfunction and contribute to the occurrence of epilepsy. This review delves into the mechanisms associated with

关键词： axon guidance drug-resistant epilepsy epilepsy nerve regeneration nervous system diseases neural pathways neuroinflammatory diseases neuronal plasticity neurons synaptic remodeling

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Rational design on separators and liquid electrolytes for safer lithium-ion batteries

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Journal of Energy Chemistry 2020年第4期29卷 58-70页

作者： Mengqi Yuan kai liu Department of Chemical Engineering Tsinghua UniversityBeijing 100084China State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100081China

As the energy density of lithium-ion batteries (LIBs) continues to increase,their safety has become a great concern for further practical large-scale *** of the ultimate solution of the safety issue is to develop intrinsically safe battery components,where the battery separators and liquid electrolytes are critical for the battery thermal runaway *** this review,we summarize recent progress in the rational materials design on battery separators and liquid electrolyte towards the goal of improving the safety of ***,some strategies for further improving safety of LIBs are also briefly outlooked.

关键词： Lithium-ion battery Battery safety Electrolyte Separator Energy storage materials

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Pyrolysis-free formamide-derived N-doped carbon supporting atomically dispersed cobalt as high-performance bifunctional oxygen electrocatalyst

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Journal of Energy Chemistry 2020年第10期29卷 283-290页

作者： yin Jia Yiyan Wang Guoxin Zhang Cong Zhang kai Sun Xuya Xiong Junfeng liu Xiaoming Sun State Key Laboratory of Chemical Resource Engineering College of ScienceBeijing University of Chemical TechnologyBeijing 100029China College of Electrical Engineering and Automation Shandong University of Science and TechnologyQingdao 266590ShandongChina State Key Laboratory of Heavy Oil Processing China University of Petroleum(East China)Qingdao 266580ShandongChina

Non-precious metal-nitrogen-carbon(MNC)electrocatalysts have gained tremendous attention as promising electrocatalysts for oxygen reduction reaction(ORR)and oxygen evolution reaction(OER).However,the most applicable strategies for the synthesis of MNC materials heavily rely on pyrolysis treatment,which may easily lead to metal aggregation and subsequent degradation of catalytic ***,we developed a pyrolysis-free strategy for preparing MNC materials,which was demonstrated by achieving ultrathin cobalt-nitrogen-carbon(Co NC)layer with dense atomically dispersed cobalt sites depositing on graphene oxide(GO)via simple treatment of Co salt and GO in *** formamide-derived Co NC layer deposited on GO(termed as f-Co NC/GO)could be controlled in 1-2 nm ***,the f-CoNC/GO composite without pyrolysis exhibited excellent bifunctional performance toward ORR and OER,which was attributed to the dense atomically dispersed Co-Nxsites and improved conductivity by GO ***,the f-CoNC/GO-assembled rechargeable Zn-air battery showed highly efficient and stable performance,demonstrating our pyrolysis-free method to be straightforward,cost-effective,and feasible for the scalable production of MNC electrocatalysts.

关键词： Pyrolysis-free Formamide Non-precious metal Electrocatalysts Zn-air battery

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Piezoresistive behavior of elastomer composites with segregated network of carbon nanostructures and alumina

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Nano Materials Science 2023年第3期5卷 312-318页

作者： Chun-Yan Tang Lei liu kai Ke Bo yin Ming-Bo Yang Wei Yang College of Polymer Science and Engineering Sichuan UniversityState Key Laboratory of Polymer Materials EngineeringChengdu610065SichuanChina

Electrically conductive elastomer composites(CECs)with segregated networks of conductive nanofillers show high potential in stretchable strain sensors due to balanced mechanical and electrical properties,yet the sensitivity at low strain is generally insufficient for practical ***,we report an easy and effective way to improve the resistive response to low strain for CECs with segregated network structure via adding stiff alumina into carbon nanostructures(CNS).The CEC containing 0.7 wt%CNS and 5 wt%Al_(2)O_(3) almost sustains the same elasticity(elongation at break of~900%)and conductivity(0.8 S/m)as the control,while the piezoresistive sensitivity is significantly *** polyurethane(TPU)composites with a segregated network of hybrid nanofillers(CNS and Al_(2)O_(3))show much higher strain sensitivity(Gauge factor,GF-566)at low strain(45%strain)due to a local stress concentration effect,this sensitivity is superior to that of TPU/CNS composites(GF-11).Such a local stress concentration effect depends on alumina content and its distribution at the TPU particle *** addition,CECs with hybrid fillers show better reproducibility in cyclic piezoresistive behavior testing than the *** work offers an easy method for fabricating CECs with a segregated filler network offering stretchable strain sensors with a high strain sensitivity.

关键词： Thermoplastic polyurethane Carbon nanostructures Alumina Conductive elastomer composites Stretchable strain sensor

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Poaceae Orthologs of Rice OsSGL,DUF1645 Domain-Containing Genes,Positively Regulate Drought Tolerance,Grain Length and Weight in Rice

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Rice science 2022年第3期29卷 257-267页

作者： liu kai LI Minjuan ZHANG Bin yin Xuming XIA Xinjie WANG Manling CUI Yanchun Key Laboratory of Agro-Ecological Processes in Subtropical Region Institute of Subtropical AgricultureChinese Academy of SciencesChangsha 410125China University of the Chinese Academy of Sciences Beijing 100049China College of Agriculture and Biotechnology Hunan University of HumanitiesScience and TechnologyLoudi 417000China

Grain yield is a polygenic trait that can be influenced by environmental factors and genetic compositions at all plant growth ***,the molecular mechanisms behind the coordination of the interaction between grain yield-related traits remain *** this study,we characterized the function of four STRESS_tolerance and GRAIN_LENGTH(Os SGL)Poaceae ortholog genes that are transcribed into DUF1645 domain-containing proteins in relation to the grain length,grain weight,and drought stress-tolerance of *** transgenic plants with overexpressing or heterologous high levels of Poaceae OsSGL ortholog genes exhibited longer grain size than the wild type *** cells were seen in panicles of the four transgenic lines with paraffin sectioning and scanning electron microscopy *** addition,four Poaceae OsSGL ortholog genes positively affected the drought tolerance of *** transgenic plants displayed higher resistance to drought stress at the seedling and vegetative ***-sequencing and qRT-PCR results indicated that over-or heterologous-expression of four Poaceae OsSGL ortholog genes also affected the transcriptome of rice *** genes may play a role in auxin and cytokinin biosynthesis and their transduction *** together,these results suggested that the four OsSGL orthologs have a conserved function in the regulation of stress-tolerance and cell growth by modulating hormonal biosynthesis and signaling.

关键词： graminaceous cereal crop Os SGL gene drought resistance grain length grain weight

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Effects of stocking density on growth performance, blood parameters and immunity of growing pigs

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Animal Nutrition 2020年第4期6卷 529-534页

作者： Xue Li Xia Xiong Xin Wu Gang liu kai Zhou Yulong yin Scientific Observing and Experimental Station of Animal Nutrition and Feed Science in South-Central Ministry of AgricultureHunan Provincial Engineering Research Center of Healthy LivestockKey Laboratory of Agro-ecological Processes in Subtropical RegionInstitute of Subtropical AgricultureChinese Academy of SciencesChangshaHunan410125China University of Chinese Academy of Science Beijing100049China Key Laboratory of Adaptation and Evolution of Plateau Biota Qinghai Key Laboratory of Animal Ecological GenomicsLaboratory of Plateau Fish Evolutionary and Functional GenomicsNorthwest Institute of Plateau BiologyChinese Academy of SciencesXining810001China

This study was conducted to evaluate the effects of different stocking densities on growth performance,blood parameters,intestinal morphology and intestinal immunity of growing pigs.A total of288 male pigs(44.35±0.50 kg)were randomly assigned to groups with stocking densities of 2.46,1.23 and 0.82 m2/pig for a *** results showed that there was no significant difference on growth performance among *** in the stocking density of 0.82 m2/pig had the lowest backfat thickness and spleen weight index among groups(P<0.05).With increasing stocking density,the serum concentrations of blood urea nitrogen(BUN),transglutaminase(TGG),alkaline phosphatase(AKP)and immunoglobulin A(Ig A)were increased,and albumin(ALB),albumin-to-globulin ratio(ALB:GLO),insulin-like growth factor-1(IGF-1)and immunoglobulin(Ig M)were decreased(P<0.05),and cortisol tended to increase and glucose tended to decrease(0.05

关键词： Stocking density Growth performance Blood parameter Intestinal morphology Growing pig

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