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Pd cluster decorated free standing flexible cathode for high performance Li-oxygen batteries

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Nano Research 2024年第4期17卷 2678-2686页

作者： Liang Guo guoliang zhang Ruonan Yang Dongmei zhang Xiuqi zhang Han Yu Xia Li Feng Dang Key Laboratory for Liquid-Solid Structure Evolution and Processing of Materials Ministry of EducationShandong UniversityJinan 250061China

As a promising candidate for the next generation energy storage system,rechargeable lithium-oxygen batteries(LOBs)still face substantial challenges caused by insulating discharge products that preclude their practical application.Exploring highly efficient cathode catalysts capable of facilitating formation/decomposition of discharge products is considered as an essential approach towards high performance LOBs.Herein,Pd decorated Te nanowires(Pd@Te NWs)were synthesized as advanced catalyst in LOBs to maximize Pd utilization and achieve synergistic effect,in which Pd clusters were uniformly grown on Te substrate though regulating the Pd:Te ratio.Meanwhile,Pd@Te nanowires assembled into an interpenetrating network-like structure by vacuum filtration and employed as flexible cathode,enabling LOBs achieved an ultralong 190 cycles stability and a superior specific capacity of 3.35 mAh·cm^(-2).Experimental studies and density functional theory(DFT)calculations reveal the excellent catalytic ability of Pd@Te and synergistic catalytic mechanism of Pd and Te,in which uniform electron distribution,extensive electron exchange,and large adsorption distance between Pd cluster and discharge products promote homogeneous adsorption/desorption of discharge products,while the high adsorption energy of Te substrate for Li species reduces the initial dynamical energy barrier during discharging process.The current work provides viable strategy to design composite catalysts for flexible cathode of LOBs with synergistic catalytic effects.

关键词： flexible lithium-oxygen batteries Pd@Te synergistic catalysis cathode catalysts density functional theory(DFT)calculation

Construction of MnS/MoS_(2) heterostructure on two-dimensional MoS_(2) surface to regulate the reaction pathways for high-performance Li-O_(2) batteries

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Journal of Energy Chemistry 2024年第6期93卷 443-452,I0012页

作者： guoliang zhang Han Yu Xia Li Xiuqi zhang Chuanxin Hou Shuhui Sun Yong Du Zhanhu Guo Feng Dang Key Laboratory for Liquid-Solid Structure Evolution and.Processing of Materials(Ministry of Education) Shandong UniversityJinan 250061ShandongChina School of Environmental and Material Engineering Yantai UniversityYantai 264005ShandongChina Institute National de la Recherche Scientifique CentreÉnergie Matériaux et TélécommunicationsVarennesQuébec J31S2Canada State Key Laboratory of Powder Metallurgy Central South UniversityChangsha 410083HunanChina Integrated Composites Lab Department of Mechanical and Construction EngineeringNorthumbria UniversityNewcastle Upon TyneNE18STUK

The inherent catalytic anisotropy of two-dimensional(2D) materials has limited the enhancement of LiO_(2) batteries(LOBs) performance due to the significantly different adsorption energies on 2D and edge surfaces.Tuning the adsorption strength in 2D materials to the reaction intermediates is essential for achieving high-performance LOBs.Herein,a MnS/MoS_(2) heterostructure is designed as a cathode catalyst by adjusting the adsorption behavior at the surface.Different from the toroidal-like discharge products on the MoS_(2) cathode,the MnS/MoS_(2) surface displays an improved adsorption energy to reaction species,thereby promoting the growth of the film-like discharge products.MnS can disturb the layer growth of MoS_(2),in which the stack edge plane features a strong interaction with the intermediates and limits the growth of the discharge products.Experimental and theoretical results confirm that the MnS/MoS_(2) heterostructure possesses improved electron transfer kinetics at the interface and plays an important role in the adsorption process for reaction species,which finally affects the morphology of Li_2O_(2),In consequence,the MnS/MoS_(2) heterostructure exhibits a high specific capacity of 11696.0 mA h g^(-1) and good cycle stability over 1800 h with a fixed specific capacity of 600 mA h g^(-1) at current density of100 mA g^(-1) This work provides a novel interfacial engineering strategy to enhance the performance of LOBs by tuning the adsorption properties of 2D materials.

关键词： Li-O_(2)batteries Two-dimensional materials MnS/MoS_(2)heterostructure Edge plane Adsorption behavior

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呼吸感染性疾病诊治年度进展2023

中华结核和呼吸杂志 2024年第2期47卷 141-146页

作者：张国良瞿介明上海交通大学医学院附属瑞金医院呼吸与危重症医学科、上海市呼吸传染病应急防控与诊治重点实验室、上海交通大学医学院呼吸病研究所上海200025

2023年,各类肺部感染性疾病仍在危害人群生命健康。呼吸感染性疾病的诊治面临诸多挑战,包括肺炎常见病原菌的耐药性持续增加、结核病的发病率上升且防治进程放缓、病毒流行导致真菌感染性疾病增加等。过去一年,在致病机制认识、检测技... 详细信息

2023年,各类肺部感染性疾病仍在危害人群生命健康。呼吸感染性疾病的诊治面临诸多挑战,包括肺炎常见病原菌的耐药性持续增加、结核病的发病率上升且防治进程放缓、病毒流行导致真菌感染性疾病增加等。过去一年,在致病机制认识、检测技术革新、新型抗菌与抗病毒药物的开发、疫苗的基础与临床研究、预防和康复手段等领域有众多重磅研究成果发表。本文详细回顾和总结了呼吸感染性疾病领域在2023年度发表的重要研究成果,为未来的研究和实践提供参考。

关键词：感染性疾病抗病毒药物致病机制重要研究成果康复手段常见病原菌病毒流行技术革新

Compositional and temperature variations of the Pacific upper mantle since the Cretaceous

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Acta Oceanologica Sinica 2016年第4期35卷 19-25页

作者： zhang guoliang Key Laboratory of Marine Geology and Environment Institute of Oceanology Chinese Academy of Sciences Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and Technology

The geological evolution of the Earth during the mid-Cretaceous were shown to be anomalous, e.g., the pause of the geomagnetic field, the global sea level rise, and increased intra-plate volcanic activities, which could be attributed to deep mantle processes. As the anomalous volcanic activities occurred mainly in the Cretaceous Pacific, here we use basalt chemical compositions from the oceanic drilling（DSDP/ODP/IODP） sites to investigate their mantle sources and melting conditions. Based on locations relative to the Pacific plateaus, we classified these sites as oceanic plateau basalts, normal mid-ocean ridge basalts, and near-plateau seafloor basalts. This study shows that those normal mid-ocean ridge basalts formed during mid-Cretaceous are broadly similar in average Na8, La/Sm and Sm/Yb ratios and Sr-Nd isotopic compositions to modern Pacific spreading ridge（the East Pacific Rise）. The Ontong Java plateau（125–90 Ma） basalts have distinctly lower Na8 and143Nd/144 Nd, and higher La/Sm and 87Sr/86 Sr than normal seafloor basalts, whereas those for the near-plateau seafloor basalts are similar to the plateau basalts, indicating influences from the Ontong Java mantle source. The super mantle plume activity that might have formed the Ontong Java plateau influenced the mantle source of the simultaneously formed large areas of seafloor basalts. Based on the chemical data from normal seafloor basalts, I propose that the mantle compositions and melting conditions of the normal mid-ocean ridges during the Cretaceous are similar to the fast spreading East Pacific Rise. Slight variations of mid-Cretaceous normal seafloor basalts in melting conditions could be related to the local mantle source and spreading rate.

关键词： mantle temperature mantle source super mantle plume Cretaceous mid-ocean ridge basalt

Comparative Study of Magmatism in East Pacific Rise Versus Nearby Seamounts:Constraints on Magma Supply and Thermal Structure Beneath Mid-ocean Ridge

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Acta Geologica Sinica(English Edition) 2011年第6期85卷 1286-1298页

作者： zhang guoliang Key Laboratory of Marine Geology and Environment Institute of Oceanology Chinese Academy oJ Sciences Qingdao266071 China

Major elements of 2202 basalts from the East Pacific Rise （EPR） and 888 basalts from near- EPR seamounts are used to investigate their differences in magma crystallization pressures and mantle melting conditions. Crystallization pressure calculation from basalts with 5.0wt%〈MgO〈8.0wt % shows that magma crystallization pressures beneath near-EPR seamounts are positively and negatively correlated with Nas and Fes, respectively. However, these correlations are indistinct in axial lavas, which can be explained by chemical homogenization induced by extensive mixing processes. In each segment divided by major transforms and over-lapping spreading centers （OSCs）, near-EPR seamount lavas have higher magma crystallization pressures, higher Fes and lower Nas than the EPR lavas, which indicate cooler lithosphere, lower degrees and shallower melting depths beneath near-EPR seamounts than the EPR. The correlations between magma crystallization pressures and melting conditions beneath near-EPR seamounts imply that the source thermal state controls the melting degree and melt flux, and then melting process controls the shallow lithosphere temperature and magma crystallization depth （pressure）. The cooler mantle sources beneath near-EPR seamounts produce a lower degree of melting and a less robust magma supply, which results in a deep thermal equilibrium level and high magma crystallization pressure. The magma crystallization pressure decreases significantly as spreading rate of the EPR increases from ~80 mm/year in the north （16~N） to ~160 mm/year in the south （19~S）, while this trend is unobvious in near-EPR seamounts. This suggests that the magma supply controlled by spreading rate dominates the ridge crust temperature and magma crystallization depth, while the near-EPR seamount magma supply is not dominated by the axial spreading rate. Because most seamounts form and gain most of their volume within a narrow zone of 5-15 km from ridge axis, they provide good constraint on magma supply and thermal structure beneath the EPR. H

关键词： crystallization pressure magma supply thermal structure seamount East Pacific Rise

高温高压实验揭示俯冲带蛇纹岩熔融行为与高镁岩浆成因

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海洋地质与第四纪地质 2024年第2期44卷 157-170页

作者：胡佳森张国良中国科学院海洋研究所深海极端环境与生命过程研究中心青岛266071 中国科学院大学北京100049 中国科学院海洋大科学研究中心青岛266071

近年来一些研究在岛弧岩浆中发现了蛇纹岩组分,这表明俯冲至弧下的蛇纹岩不仅为地幔楔提供流体,而且可以通过部分熔融参与岛弧岩浆形成。然而,蛇纹岩在地幔楔中的熔融行为及其在俯冲带物质循环中的作用仍未进行深入研究。因此,本研究选... 详细信息

近年来一些研究在岛弧岩浆中发现了蛇纹岩组分,这表明俯冲至弧下的蛇纹岩不仅为地幔楔提供流体,而且可以通过部分熔融参与岛弧岩浆形成。然而,蛇纹岩在地幔楔中的熔融行为及其在俯冲带物质循环中的作用仍未进行深入研究。因此,本研究选择3种蛇纹岩样品:蚀变原岩分别为二辉橄榄岩(SE2)和方辉橄榄岩(SE3)的天然蛇纹岩,以及模拟含有大量滑石的合成蛇纹岩样品(SEQ),在700~1300℃和4 GPa的温度压力条件下进行了模拟实验,限定了蛇纹岩的熔融温度,分析了实验产生的熔体成分。研究发现,不同类型蛇纹岩的固相线存在显著差异,SE3、SEQ和SE2蛇纹岩的固相线分别为900~960℃、960~1100℃以及1150~1200℃。这3种蛇纹岩的固相线均高于俯冲板片上表面的温度,要求蛇纹岩通过底辟作用进入地幔楔以发生部分熔融。根据实验结果,本研究认为SE2和SEQ蛇纹岩可以在地幔楔底部相对较低的温度条件下(960~1100℃)即发生熔融,产生科马提质岩浆;而在上覆地幔楔更高温度条件下(>1200℃),SE2蛇纹岩可以发生更广泛、更高程度的部分熔融,产生玻安质岩浆。

关键词：蛇纹岩俯冲带高温高压实验高镁岩浆科马提岩

家庭化迁移对流动人口就业质量的影响及机制研究

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人口学刊 2024年第4期46卷 99-112页

作者：沈可张国梁复旦大学社会发展与公共政策学院上海200433

近20年来流动人口家庭化迁移趋势逐渐增强,已经取代个体迁移成为我国人口迁移的主要模式。现有研究已关注家庭化迁移对流动人口就业的影响,但大多仅聚焦流动人口就业概率或者工作收入等方面,缺乏对就业质量影响的考察,对家庭化迁移影响... 详细信息

近20年来流动人口家庭化迁移趋势逐渐增强,已经取代个体迁移成为我国人口迁移的主要模式。现有研究已关注家庭化迁移对流动人口就业的影响,但大多仅聚焦流动人口就业概率或者工作收入等方面,缺乏对就业质量影响的考察,对家庭化迁移影响就业的机制分析也有待进一步完善。在以人为核心的新型城镇化战略稳步推进的背景下,探究家庭化迁移如何影响流动人口就业质量对于促进流动人口市民化、提升城镇化质量具有重要意义。本文基于2018年中国流动人口动态监测调查(CMDS)数据,从工作收入、工作强度、工作保障、单位性质、就业身份五个维度构建流动人口就业质量综合指数,并采用多元线性回归模型实证检验家庭化迁移对流动人口就业质量的影响及其作用机制、调节因素。研究发现:家庭化迁移对流动人口就业质量具有显著的负面影响,但随着家庭化迁移程度的加深,这种负面影响会逐渐减弱;从就业质量各子指标来看,家庭化迁移虽然提高了流动人口的收入水平,但也显著增加了其劳动强度,降低了其工作保障、单位稳定性与职业层级;异质性分析结果表明家庭化迁移对流动人口就业质量的影响具有明显的性别差异与年龄差异,其对女性、中年流动人口就业质量的负面影响大于男性、青年和中老年流动人口;中介效应结果表明家庭化迁移既因增加流动人口的家庭照料负担和经济负担而降低了其就业质量,也因增强其居留意愿而提高了流动人口的就业质量,但前两条路径的作用力度大于第三条路径;调节效应结果表明家庭化迁移对流动人口就业质量的影响因随迁家庭成员而异,母亲随迁会显著降低家庭化迁移对就业质量的负面冲击,而父亲随迁会加剧这一负面冲击。针对流动人口面临的“团圆”和“乐业”两难抉择,政府应致力于推进公共服务均等化,完善流动人口的就业、生活保障,特别是保障女性流动人口的就业权益,满足流动人口对子女托育、教育、父母养老等需求,促进迁移家庭的社会融入,推动其市民化进程。

关键词：流动人口家庭化迁移就业质量

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西菲律宾海乌尔达内塔洋底高原火山岩地球化学和地幔源区特征

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热带海洋学报 2024年第4期43卷 42-56页

作者：陈馨张国良中国科学院海洋研究所深海研究中心山东青岛266071 中国科学院大学北京100049 中国科学院海洋大科学中心山东青岛266071

自始新世以来,西菲律宾海板块经历了复杂的地质演化过程,在盆地形成过程中伴随有大量板内火山岩形成,板内火山岩主要表现为洋底高原,这些板内火山岩之间的联系一直是研究关注的重点。其中,本哈姆隆起和乌尔达内塔两个洋底高原因其构造... 详细信息

自始新世以来,西菲律宾海板块经历了复杂的地质演化过程,在盆地形成过程中伴随有大量板内火山岩形成,板内火山岩主要表现为洋底高原,这些板内火山岩之间的联系一直是研究关注的重点。其中,本哈姆隆起和乌尔达内塔两个洋底高原因其构造位置特殊是研究西菲律宾海盆内板内火山岩相互关系的良好切入点。本次研究对在乌尔达内塔高原获得的10个火山岩样品进行了电子探针矿物分析,全岩主量元素、微量元素及同位素分析。分析结果表明我们获得的乌尔达内塔高原火山岩为碱性玄武岩,其地幔归一化微量元素模式具有典型洋岛玄武岩特征;具有较高的(Sm/Yb)N值(1.89~3.92),指示源区可能存在石榴子石。结合前人研究获得的西菲律宾海盆板内火山岩数据,我们发现乌尔达内塔高原碱性玄武岩具有与本哈姆隆起拉斑玄武岩相似的Sr-Nd-Hf同位素组成,但具有明显低的206Pb/204Pb同位素组成;西菲律宾海盆内碱性洋岛玄武岩与拉斑洋岛玄武岩的Sr-Nd-Hf同位素组成范围几乎相同,但铅同位素组成存在明显差异,碱性洋岛玄武岩的铅同位素比值范围更大。西菲律宾盆地形成环境复杂,板内火山岩形成时可能受到盆地扩张作用和地幔柱的影响,我们利用同位素数据模拟了地幔柱与扩张中心相互作用对板内碱性玄武岩的影响,模拟结果表明碱性火山岩的低206Pb/204Pb值不能通过与地幔柱有关的富集组分和与海盆扩张作用有关的亏损组分混合实现,表明乌尔达内塔高原碱性火山岩具有一个相对独立的地幔源区,形成时已远离扩张中心,不受扩张作用影响。另一方面,乌尔达内塔高原碱性玄武岩形成时晚于拉斑玄武岩1~2Ma,并且部分熔融程度更低,乌尔达内塔高原拉斑玄武岩和碱性玄武岩可能分别对应岩浆活动的主要阶段和晚期阶段。因此,我们认为乌尔达内塔高原与本哈姆隆起岩浆活动的主要阶段可能具有相同的地幔源区,两高原受同一地幔柱影响;在乌尔达内塔高原岩浆活动的晚期阶段,乌尔达内塔高原则具有相对独立的源区。

关键词：西菲律宾海盆乌尔达内塔高原碱性玄武岩同位素地幔源区

Geochemical constraints on CO2-rich mantle source for the Kocebu Seamount,Magellan Seamount chain in the western Pacific

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Journal of Oceanology and Limnology 2020年第4期38卷 1201-1214页

作者： LIU Yuhao zhang guoliang zhang Ji WANG Shuai Center of Deep Sea Research&Key Laboratory of Marine Geology and Environment Institute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and TechnologyQingdao 266000China University of Chinese Academy of Sciences Beijing 100049China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China

The alkaline oceanic island basalts(OIBs)with under-saturated SiO2 and high contents of CaO and alkaline are usually attributed to mantle sources different from typical tholeiitic OIBs.Based on the results of high pressure and temperature experiment study,the genesis of silica under-saturated alkaline basaltic melts could be explained by the role of CO2,thus,the genetic relationship of alkaline basalts with CO2 has become a topic of relevance because it is closely related to the deep carbon cycle.The Magellan Seamount chain in the West Pacific Seamount Province has wide distribution of alkali basalts.For the first time,we collected alkaline basalt samples from the Kocebu Seamount of the Magellan Seamount chain and found that magmatic apatites widely occur in the less evolved volcanic rock samples,and the high contents of phosphorus should be a feature of the alkaline OIBs of the Magellan Seamounts.Compared with typical OIBs,these alkaline volcanic rocks have higher CaO and P2O5,lower SiO2 content,negative anomaly of high field strength elements(HFSEs),more distinctly negative anomaly of potassium(K)and the ubiquity of titanaugite,indicating a CO2-rich mantle source.Based on the relatively high K2O and TiO2 contents and La/Yb ratio and low MgO content of these alkaline rocks,we suggest that the volcanic rocks of the Magellan Seamounts are originated from carbonated eclogites derived possibly from ancient subducted altered oceanic crust.

关键词： alkaline oceanic island basalts(OIBs) carbonatite geochemistry mantle source Magellan Seamounts