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Constructing mild expanded graphite microspheres by pressurized oxidation combined microwave treatment for enhanced lithium storage

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Rare Metals 2021年第4期40卷 837-847页

作者： Can-Liang Ma Zhen-hui Hu Ning-Jing Song Yun Zhao Yan-Zhen Liu hui-qi wang Key Laboratory of Materials for Energy Conversion and Storage of Shanxi Province Institute of Molecular ScienceShanxi UniversityTaiyuan 030006China College of Chemistry and Chemical Engineering Jinzhong UniversityJinzhong 030619China CAS Key Laboratory of Carbon Materials Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China School of Energy and Power Engineering School of Material Science and EngineeringNorth University of ChinaTaiyuan 030051China

The modified graphite anode materials have some prominent advantages over other anode materials in the industrial applications.A novel simple and gentle method is proposed to synthesize the mild expanded graphite microspheres(MEGMs) from flake graphite spheres through a combined modified pressurized oxidation combined with the microwave *** microstructural results demonstrate that moderately expanded MEGMs with an expansion volume between 4 and 10 ml·g^(-1)exhibit a highly microporous structure with an enlarged interlayer spacing,a decreased microcrystalline size,as well as an increased number of functional groups on the surface,resulting in the increased storage sites and spaces for lithium ions and the enhanced diffusion rate of lithium *** used as the anode material for lithium-ion batteries,the MEGM-T75t30 obtained by oxidation treatment at 75℃ for 30 min followed by microwave irradiation for expansion displays a high reversible capacity of 446.7 mAh·g^(-1) at 100 mA·g^(-1) after 100 cycles and excellent rate performance(330 and 116 mAh·g^(-1) at 800 and 3200 mA·g^(-1),respectively).Therefore,the MEGMs prepared by this convenient and mild method show excellent electrochemical properties and good application potential.

关键词： Pressurized oxidation Microwave treatment Mild expanded graphite microspheres Microstructure Graphitic anode material Lithium-ion battery

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Rational construction of densely packed Si/MXene composite microspheres enables favorable sodium storage

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Rare Metals 2022年第5期41卷 1626-1636页

作者： hui-qi wang Ya-Xin Zhao Li Gou Li-Yong wang Mei wang Ying Li Sheng-Liang Hu School of Energy and Power Engineering North University of ChinaTaiyuan 030051China School of Materials Science and Engineering North University of ChinaTaiyuan 030051China

The fast and reversible sodiation/desodiation of anode materials remains an indelible yet fascinating ***, a class of the densely packed Si/MXene composite microspheres is constructed and prepared, taking advantages of the synergistic effects of the activated Si nanoparticles and conductive flower-like MXene microspheres with ample ion-diffusion pathways. Consequently,the intrinsic MXene nanosheets with intelligently regulated interlayer spacing can accommodate the volume change induced strain during cycling, and the strong interaction between the Si and MXene matrix greatly contributes to the robust structural stability. As expected, the Si/MXene composite architecture exhibits boosted sodium storage performance, in terms of an inspiring reversible capacity of 751 mAh·g^(-1)at 0.1 A·g^(-1), remarkable long-term cycling stability of 376 mAh·g^(-1)at 0.1 A·g^(-1) over 500 cycles, and outstanding rate capability(after one consecutive current density changing from 0.1 to 2.0 A·g^(-1), a large capacity of 275 mAh·g^(-1) is regained after suddenly returning the initial current density back to 0.1 A·g^(-1) and in the subsequent 200 cycles this composite architecture anode still delivers a capacity of 332 mAh·g^(-1)). The kinetics analysis indicates superior pseudocapacitive property, high electronic conductivity, and favorable sodium-ion adsorption and diffusion capability,confirming fast sodium storage performance. Impressively, ex-situ X-ray diffraction and selected area electron diffraction characterizations corroborate the formation of NaSi;as the main sodiation products during the reversible evolutions of cycled proceeding with sodium-ion insertion. This work sheds light on the elaborate design of silicon-based nanostructured anodes towards advanced high-performance sodium-ion batteries.

关键词： Silicon MXene Composite microspheres Sodium-ion batteries Flower-like anode Efficient sodiumion storage

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Anti-self-discharge ultrathin all-inorganic electrochromic asymmetric supercapacitors enabling intelligent and effective energy storage

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Rare Metals 2023年第9期42卷 2957-2971页

作者： Lei Liu Chen Liu Meng-Ying wang Bin Li Ke wang Xiang-qian Fan Li-Yong wang hui-qi wang Sheng-Liang Hu Xun-Gang Diao School of Energy and Power Engineering North University of ChinaTaiyuan030051China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of ScienceShenyang110016China School of Energy and Power Engineering Beihang UniversityBeijing100191China Research Center for Photovoltaics Shanghai Institute of Space Power-SourcesShanghai200245China National Key Laboratory of Electromagnetic Space Security Tianjin300308China

Electrochromic asymmetric supercapacitors(EASs), incorporating electrochromic and energy storage into one platform, are extremely desirable for next-generation civilian portable and smart electronic devices. However, the crucial challenge of their fast self-discharge rate is often overlooked, although it plays an important role in practical application. Unfortunately, very limited research on EAS has focused on this critical problem. Here, an ultrathin all-inorganic EAS with excellent anti-self-discharge performance and superior electrochromic behavior is designed and manufactured by introducing a thin nanofunctional layer at the electrode/electrolyte interface. The prototype all-inorganic EAS exhibited a wide working voltage of 2.2 V, a high energy/power density(81.2mWh·cm^(-3)/0.688 W·cm^(-3)and 30.6 mWh·cm^(-3)/11.02W·cm^(-3)), along with outstanding electrochemical and electrochromic performance even at high ***, the introduced Ta2O5layer can efficiently prohibit the redistribution and diffusion of the movable ions at the fully charged state, endowing the all-inorganic EAS with a tardy self-discharge rate of 12.6 mV·g^(-1),which is an extremely low value when compared with previous reported research. Significantly, the ultrathin allinorganic EASs could also well maintain a slow self-discharge rate and their original electrochemical characteristics under various environmental temperatures. We envision that the novel strategy of electrode/electrolyte interface engineering can effectively deal with the severe self-discharge challenge of EAS, and provide more opportunities for their practical applications.

关键词： Anti-self-discharge Electrochromic Asymmetric supercapacitors(ASCs) All-inorganic Interface

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miR-30c promotes Schwann cell remyelination following peripheral nerve injury

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Neural Regeneration Research 2017年第10期12卷 1708-1715页

作者： Sheng Yi qi-hui wang Li-li Zhao Jing qin Ya-xian wang Bin Yu Song-lin Zhou Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education Co-innovation Center of NeuroregenerationNantong UniversityNantongJiangsu ProvinceChina

Differential expression of mi RNAs occurs in injured proximal nerve stumps and includes mi RNAs that are firstly down-regulated and then gradually up-regulated following nerve *** mi RNAs might be related to a Schwann cell phenotypic *** R-30 c,as a member of this group,was further investigated in the current ***-Dawley rats underwent sciatic nerve transection and proximal nerve stumps were collected at 1,4,7,14,21,and 28 days post injury for *** sciatic nerve injury,mi R-30 c was down-regulated,reaching a minimum on day 4,and was then upregulated to normal *** cells were isolated from neonatal rat sciatic nerve stumps,then transfected with mi R-30 c agomir and co-cultured in vitro with dorsal root *** enhanced expression of mi R-30 c robustly increased the amount of myelin-associated protein in the co-cultured dorsal root ganglia and Schwann *** then modeled sciatic nerve crush injury in vivo in Sprague-Dawley rats and tested the effect of perineural injection of mi R-30 c agomir on myelin sheath *** days after surgery,sciatic nerve stumps were harvested and subjected to immunohistochemistry,western blot analysis,and transmission electron *** direct injection of mi R-30 c stimulated the formation of myelin sheath,thus contributing to peripheral nerve ***,our findings indicate that mi R-30 c can promote Schwann cell myelination following peripheral nerve *** functional study of mi R-30 c will benefit the discovery of new therapeutic targets and the development of new treatment strategies for peripheral nerve regeneration.

关键词： nerve regeneration peripheral nerve regeneration peripheral nerve injury sciatic nerve mi RNAs mi R-30c dedifferentiation Schwann cells myelination in vivo in vitro neural regeneration

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Zoonotic origins of human coronavirus 2019(HCoV-19/SARS-CoV-2):why is this work important?

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Zoological Research 2020年第3期41卷 213-219页

作者： Gary Wong Yu-Hai Bi qi-hui wang Xin-Wen Chen Zhi-Gang Zhang Yong-Gang Yao CAS Key Laboratory of Molecular Virology&Immunology Institut Pasteur of ShanghaiChinese Academy of SciencesShanghai 200031China Department of Microbiology-Infectiology and Immunology Laval UniversityQuebec G1V 4G2Canada CAS Key Laboratory of Pathogenic Microbiology and Immunology Institute of MicrobiologyCenter for Influenza Research and Early-warning(CASCIRE)CAS-TWAS Center of Excellence for Emerging Infectious Diseases(CEEID)Chinese Academy of SciencesBeijing 100101China State Key Laboratory of Virology Wuhan Institute of VirologyChinese Academy of SciencesWuhanHubei 430071China State key Laboratory for Conservation and Utilization of Bio-Resources in Yunnan School of Life SciencesYunnan UniversityKunmingYunnan 650091China Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences and Yunnan Province Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China Kunming College of Life Science University of Chinese Academy of SciencesKunmingYunnan 650204China KIZ-CUHK Joint Laboratory of Bioresources and Molecular Research in Common Diseases Kunming Institute of ZoologyChinese Academy of SciencesKunmingYunnan 650223China

The ongoing pandemic of coronavirus disease 2019 (COVID-19), caused by infection with human coronavirus 2019 (HCoV-19/SARS-CoV-2/2019-nCoV), is a global threat to the human population. Here, we briefly summarize the available data for the zoonotic origins of HCoV-19, with reference to the other two epidemics of highly virulent coronaviruses, SARSCoV and MERS-CoV, which cause severe pneumonia in humans. We propose to intensify future efforts for tracing the origins of HCoV-19, which is a very important scientific question for the control and prevention of the pandemic.

关键词： origin why is this work important HCoV-19/SARS-CoV-2 Zoonotic origins of human coronavirus 2019

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Transcription factor networks involved in cell death in the dorsal root ganglia following peripheral nerve injury

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Neural Regeneration Research 2018年第9期13卷 1622-1627页

作者： Jing qin Jian-Cheng Wu qi-hui wang Song-Lin Zhou Su-Su Mao Chun Yao Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education Co-innovation Center of NeuroregenerationNantong University Department of Pathological Anatomy Nantong University

The peripheral nervous system has the potential to regenerate after nerve injury owing to the intrinsic regrowth ability of neurons and the permissive *** regenerative process involves numerous gene expression changes,in which transcription factors play a critical ***,we profiled dysregulated genes in dorsal root ganglion neurons at different time points（0,3 and 9 hours,and 1,4 and 7 days） after sciatic nerve injury in rats by RNA *** the present study,we investigated differentially expressed transcription factors following nerve injury,and we identified enriched molecular and cellular functions of these transcription factors by Ingenuity Pathway *** analysis revealed the dynamic changes in the expression of transcription factors involved in cell death at different time points following sciatic nerve *** addition,we constructed regulatory networks of the differentially expressed transcription factors in cell death and identified some key transcription factors（such as STAT1,JUN,MYC and IRF7）.We confirmed the changes in expression of some key transcription factors（STAT1 and IRF7） by quantitative reverse transcription-polymerase chain ***,our analyses provide a global overview of transcription factor changes in dorsal root ganglia after sciatic nerve injury and offer insight into the regulatory transcription factor networks involved in cell death.

关键词： nerve regeneration cell death transcription factors dorsal root ganglia neurons peripheral nerve injury sciatic nerve ingenuitypathway analysis Cytoscape bioinformatics analysis STAT1 IRF7 neural regeneration

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The Influence of Transgenic cry1Ab/cry1Ac,cry1C and cry2A Rice on Non-Target Planthoppers and Their Main Predators Under Field Conditions

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Agricultural Sciences in China 2011年第11期10卷 1739-1747页

作者： HANYu XU Xue-liang MA Wei-hua YUAN Ben-qi wang hui LIU Fang-zhou wang Man-qun WU Gang HUA Hong-xia Hubei lnsect Resources Utilization and Sustainable Pest Management Key Laboratory College of Plant Science and Technology HuazhongAgricultural University Wuhan 430070 P.R.China

Transgenic Bt rice has been shown to be an effective means of controlling Lepidoptera pests of rice. However, the potential roles of transgenic rice on planthoppers and their predators need to be investigated before its commercialization. Population density, species dominance and population dynamics are important parameters of arthropods populations in field. So the impacts of three transgenic Bt rice strains expressing crylAb/crylAc, crylC and cry2A on population density, species dominance and population dynamics of three species of planthoppers （Nilaparvata lugens, Sogatella furcifera and Laodelphax striatellus） and their three main predators （ Cyrtorhinus lividipennis, Pirata subpiraticus and Theridium octomaculatum） were evaluated at three sites in Hubei Province, China, in the current study. The results showed that among three species of planthoppers, both in transgenic and non-transgenic rice field, the predominant species ofplanthoppers within phytophagous guild was S. furcifera at any site either growing season （46-50%）. Significantly higher population density ofN. lugens was observed in T2A-1 field relative to Minghui 63 field at Wuxue in 2010. The species dominance of predator, P. subpiraticus, in TT51 field was significantly higher than that in T 1 C-19 and T2A-1 fields in 2009 at Xiaogan site. Sampling date significantly influenced six arthropods except for P. subpiraticus in 2010. The interaction between rice strain^sampling date had no significant adverse effects on the population dynamics of three species of planthoppers and their predators, except for several individual species in 2009. The interaction among rice strain^sampling date^sampling site also had no significant effect on six arthropods except for S. furcifera in 2009. The results indicated that transgenic Bt rice expressing crylAb/crylAc, cry2A and crylC had no significant adverse effects on the population dynamics of three planthoppers and their predators in most investigated data and samp

关键词： planthopper predator transgenic Bt rice population dynamics species dominance population density

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A pulmonary source of infection in patients with sepsis-associated acute kidney injury leads to a worse outcome and poor recovery of kidney function

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World Journal of Emergency Medicine 2020年第1期11卷 18-26页

作者： Yi-wen Fan Shao-wei Jiang Jia-meng Chen hui-qi wang Dan Liu Shu-ming Pan Cheng-jin Gao Department of Emergency Medicine Xinhua Hospital Shanghai Jiaotong University School of Medicine

BACKGROUND:Hospital mortality rates are higher among patients with sepsis-associated acute kidney injury(SA-AKI)than among patients with ***,the pathogenesis underlying SA-AKI remains *** hypothesized that the source of infection affects development of *** aim to explore the relationship between the anatomical source of infection and outcome in patients with ***:Between January 2013 and January 2018,113 patients with SA-AKI admitted to our Emergency Center were identifi ed and divided into two groups:those with pulmonary infections and those with other sources of *** each patient,we collected data from admission until either discharge or *** also recorded the clinical outcome after 90 days for the discharged ***:The most common source of infection was the lung(52/113 cases,46%),followed by gastrointestinal(GI)(25/113 cases,22.1%)and urinary(22/113,19.5%)*** analysis showed that patients with SA-AKI had a significantly worse outcome(30/52 cases,P<0.001)and poorer kidney recovery(P=0.015)with pulmonary sources of infection than those infected by another *** also showed that patients not infected by a pulmonary source more likely experienced shock(28/61 cases,P=0.037).CONCLUSION:This study demonstrated that the source of infection infl uenced the outcome of SA-AKI patients in an independent *** injury may influence renal function in an asyet undetermined manner as the recovery of kidney function was poorer in SA-AKI patients with a pulmonary source of infection.

关键词： Sepsis Infection source Acute kidney injury Lung injury Renal function

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Effect of Nitrogen Applied Before Transplanting on NUE in Rice

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Agricultural Sciences in China 2007年第7期6卷 842-848页

作者： ZHENG Yong-mei DING Yan-feng wang qiang-sheng LI Gang-hua WU Hao YUAN qi wang hui-zhi wang Shao-hua Key Laboratory of Crop Growth Regulation Ministry of Agriculture/Nanjing Agricultural University Nanjing 210095 P.R.China

Nitrogen （N） application before transplanting, where N fertilizers are applied in seedling-bed and carried to the paddy field with seedlings, is a novel method proposed in this article aiming for improving nitrogen utilization efficiency （NUE） in rice. The effect of this method on mineral N distribution in the rhizosphere soil was investigated in a field experiment with a japonica variety, Ningjing 2, in seasons of 2004 and 2005. There were four levels of N applied 16 h before transplanting： zero N （NO）, 207 kg ha^-1 （NL）, 310.5 kg ha^-1 （NM）, and 414 kg ha^-1 （NH）. The result indicated that N fertilizer before transplantation had positive effect of increasing mineral N content in the rhizosphere soil of rice. Generally, N content in the rhizosphere soil of rice tended to increase with the amount of N fertilizer before transplanting, with the NH treatment having the largest effect. Additionally, N fertilizer before transplanting had significant influence on rice NUE and grain yield. Compared with other treatments, the NM treatment showed the largest influence, with basal-tillering NUE, total NUE, and grain yield being 15%, 12%, and 529.5 kg ha^-1 higher than those of NO treatment. This result indicated that N fertilizer before transplantation had positive effect on mineral N distribution in the rhizosphere soil of rice, thus improving NUE and grain yield.

关键词： rice nitrogen (N) application before transplanting nitrogen utilization efficiency (NUE) grain yield

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Atmospheric reductive catalytic fractionation of lignocellulose integrated with one-pot catalytic conversion of carbohydrate yielding valuable lignin monomers and platform chemicals from corn straw

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Green Energy & Environment 2025年第1期10卷 161-172页

作者： Meng-Ying Liu Zhe-hui Zhang Xue-qi wang qian Sun Chen Zhang Yu Li Zhuohua Sun Katalin Barta Feng Peng Tong-qi Yuan State Key Laboratory of Efficient Production of Forest Resources Beijing Forestry UniversityBeijing100083China Beijing Key Laboratory of Lignocellulosic Chemistry Beijing Forestry UniversityBeijing100083China Department of Chemistry Organic and Bioorganic ChemistryUniversity of GrazHeinrichstrasse 28/II8010 GrazAustria

Developing a cost-effective and environmentally friendly process for the production of valuable chemicals from abundant herbal biomass receives great attentions in recent ***,taking advantage of the“lignin first”strategy,corn straw is converted to valuable chemicals including lignin monomers,furfural and 5-methoxymethylfurfural via a two steps *** key of this research lies in the development of a green and low-cost catalytic process utilizing magnetic Raney Ni catalyst and high boiling point ethylene *** utilization of neat ethylene glycol as the sole slovent under atmospheric conditions obviates the need for additional additives,thereby facilitating the entire process to be conducted in glass flasks and rendering it highly convenient for scaling *** the initial step,depolymerization of corn straw lignin resulted in a monomer yield of 18.1 wt%.Subsequently,in a dimethyl carbonate system,the carbohydrate component underwent complete conversion in a one-pot process,yielding furfural and 5-methoxymethylfurfural as the primary products with an impressive yield of 47.7%.

关键词： Atmospheric reductive catalytic fractionation Corn straw Ethylene glycol Raney Ni 5-Methoxymethylfurfural

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