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Recent progress in thermodynamic and kinetics modification of magnesium hydride hydrogen storage materials

Materials Reports(Energy) 2024年第1期4卷 3-22页

作者： Yafei Liu yusang guo Yaru Jiang Lizhuang Feng Yu Sun Yijing Wang Key Laboratory of Advanced Energy Materials Chemistry Ministry of EducationRenewable Energy Conversion and Storage CenterCollege of ChemistryCollaborative Innovation Center of Chemical Science and Engineering(Tianjin)Nankai UniversityTianjin300071PR China

Hydrogen energy has emerged as a pivotal solution to address the global energy crisis and pave the way for a cleaner,low-carbon,secure,and efficient modern energy system.A key imperative in the utilization of hydrogen energy lies in the development of high-performance hydrogen storage materials.Magnesium-based hydrogen storage materials exhibit remarkable advantages,including high hydrogen storage density,cost-effectiveness,and abundant magnesium resources,making them highly promising for the hydrogen energy sector.Nonetheless,practical applications of magnesium hydride for hydrogen storage face significant challenges,primarily due to their slow kinetics and stable thermodynamic properties.Herein,we briefly summarize the thermodynamic and kinetic properties of MgH2,encompassing strategies such as alloying,nanoscaling,catalyst doping,and composite system construction to enhance its hydrogen storage performance.Notably,nanoscaling and catalyst doping have emerged as more effective modification strategies.The discussion focuses on the thermodynamic changes induced by nanoscaling and the kinetic enhancements resulting from catalyst doping.Particular emphasis lies in the synergistic improvement strategy of incorporating nanocatalysts with confinement materials,and we revisit typical works on the multi-strategy optimization of MgH2.In conclusion,we conduct an analysis of outstanding challenges and issues,followed by presenting future research and development prospects for MgH2 as hydrogen storage materials.

关键词： Magnesium hydride Thermodynamics and kinetics Catalyst doping Nanostructures Hydrogenation and dehydrogenation

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Cobalt coordination modified double-schiff-base with low solubility as a long-cycle life anode for sodium-ion batteries

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Progress in Natural Science:Materials International 2022年第4期32卷 510-516页

作者： Mengyuan Yue Huinan guo Zhaoxia Yuan Weiqin Li Yafei Liu Kai Chen yusang guo Yijing Wang Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) Renewable Energy Conversion and Storage Center College of Chemistry Nankai University

Sodium-ion batteries（SIBs） have been recently considered as an intriguing candidate for next-generation battery systems with their advantages in large-scale energy storage applications. However, the design of electrode materials of SIBs still suffers from severe volume expansion and low capacity caused by the larger ion radius, high redox potential and heavy atom weight of Na. Organic electrode materials with structural flexibility have attracted great attention recently for their potential in alleviating volume expansion. However, most organic electrode materials suffer from dissolution in electrolytes and consequent capacity fading during the long-term cycling process. In this work, a method coordinating with Co2+was applied to solve the shuttle effect of H4salphdc(N, N'-phenylene-bis-（salicylideneimine） dicarboxylic acid). By virtue of the Co2+coordination, the Co（H2salphdc）electrode delivered a desirable discharge capacity of 123 m Ah g-1after 1500 cycles at the current density of 200m A g-1, while the H4salphdc electrode exhibited severe capacity fading. Such excellent electrochemical performance can be credited to the Co2+coordination repressing the electrode dissolution and improving the structure stability.

关键词： Double-Schiff-base Sodium-ion battery Shuttle effects

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Liver dysfunction on admission worsens clinical manifestations and outcomes of coronavirus disease 2019

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Chinese Medical Journal Pulmonary and Critical Care Medicine 2023年第3期1卷 181-187页

作者： Fangying Lu Rong Chen Kandi Xu Jie Huang Dexiang Yang Tao Bai yusang Xie Yun Ling Kui Liu Wei Du Jiayang Yan Huihuang Lin Jian Li Yun Feng Min Zhou Yi guo Department of Respiratory and Critical Care Medicine Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghai 200025China Institute of Respiratory Diseases Shanghai Jiao Tong University School of MedicineShanghai 200025China Department of Critical Medicine Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghai 200025China Department of Respiratory Diseases Tongling People’s HospitalTonglingAnhui 244099China Department of Infectious Disease Wuhan Jinyintan HospitalWuhanHubei 430048China Department of Infectious Disease Shanghai Public Health Clinical CenterShanghai 200025China Department of Respiratory and Critical Care Medicine Tongji HospitalTongji Medical College of Huazhong University of Science and TechnologyWuhanHubei 430030China Clinical Research Center Ruijin HospitalShanghai Jiao Tong University School of MedicineShanghai 200025China

Background:Liver dysfunction was common in coronavirus disease 2019(COVID-19),but its association with clinical features and poor prognosis has not been fully delineated.Our study aimed to determine the role of liver dysfunction in COVID-19 and understand the predictors for worse outcomes in patients with liver injury.Methods:We conducted this multicenter,retrospective study in five designated hospitals for COVID-19 manage-ment.Laboratory-confirmed COVID-19 patients were enrolled and classified into the normal live function group and liver dysfunction group according to liver enzymes,bilirubin,and albumin on admission,respectively.Data of baseline,clinical manifestations,and outcomes were collected and compared in the paired groups.Results:Of the 649 included COVID-19 patients,200(30.8%),69(10.6%),and 267(41.1%)patients had elevated liver enzymes,increased bilirubin,and low-level albumin,respectively.Fever,cough,and dyspnea were the most common symptoms and showed an increased proportion in the liver dysfunction group.Compared with patients in the normal liver function group,patients with liver dysfunction manifested decreased lymphocytes,higher level of leukocytes,neutrophils,inflammatory indicators,and cytokines,as well as more severe impairment in kidney function and myocardium.They were more likely to show bilateral involvement and more pulmonary lobes involved according to chest images.With increased proportion of patients who developed severe/critical conditions and needed mechanical ventilation and systemic glucocorticoid therapy,patients with liver dysfunc-tion on admission showed significantly higher in-hospital mortality.Moreover,cardiac troponin I≥1.5 ng/mL was identified as an independent mortality predictor in the elevated liver enzymes group.Conclusion:Patients with liver dysfunction on admission had worse clinical manifestation,and resulted in higher rate of severe/critical type,receiving mechanical ventilation and in-hospital mortality.

关键词： COVID-19 Liver dysfunction Clinical manifestation Outcomes Mortality

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响应面法优化多烯紫杉醇外泌体的载药工艺

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中药新药与临床药理 2021年第8期32卷 1189-1196页

作者：郭密密王婴梁达均林定梅王瑜桑杨佳敏王岩广东药科大学广东广州510006

目的构建一种多烯紫杉醇的外泌体递药系统。方法采用超速离心法提取A549肿瘤细胞外泌体,电穿孔法制备多烯紫杉醇外泌体(DTX-EXO)。以包封率为考察指标,采用星点设计-响应面法考察制备工艺,动态透析法测定DTX-EXO的体外释药行为。以体外... 详细信息

目的构建一种多烯紫杉醇的外泌体递药系统。方法采用超速离心法提取A549肿瘤细胞外泌体,电穿孔法制备多烯紫杉醇外泌体(DTX-EXO)。以包封率为考察指标,采用星点设计-响应面法考察制备工艺,动态透析法测定DTX-EXO的体外释药行为。以体外细胞摄取实验和体内小鼠活体成像实验考察外泌体的靶向性。结果DTX-EXO的最优制备工艺参数为:多烯紫杉醇浓度120μg·mL-1,电压0.75 V,电击次数5次。透射电镜下DTX-EXO呈现杯碟状,平均粒径为151 nm。DTX-EXO在体外模拟正常体液环境和肿瘤环境下24 h累计释放度分别为40.5%和56.9%。细胞摄取实验中,香豆素-6(C6)-EXO组细胞摄取荧光强度高于C6组。小鼠活体成像实验中,生理盐水组在肿瘤部位没有荧光,Cy5.5-N-羟基琥珀酰亚胺脂(Cy5.5)-DTX-EXO组在肿瘤部位的荧光最强,Cy5.5-EXO组次之,Cy5.5-DTX组最弱。结论外泌体可以用于多烯紫杉醇的传递载体,并且具有良好的缓释性和靶向性。

关键词：多烯紫杉醇外泌体药物传递系统缓释性靶向性

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