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Realizing the Long Lifespan of Molybdenum Trioxide in Aqueous Aluminum Ion Batteries Through Potential Regulation 被引量:1
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作者 Haodong Fan Xuejin Li +10 位作者 Jie Zhou Xiaoning Wang Xiuli Gao Haoyu Hu Li Zhou Tonghui Cai Yongpeng Cui Pengyun Liu Qingzhong Xue Zifeng Yan Wei Xing 《Renewables》 2023年第4期455-464,共10页
MoO_(3) is one of the most promising anode materials for aqueous aluminum batteries due to its high theoretical capacity and suitable aluminum insertion/de-insertion potential.However,the inferior cycling stability li... MoO_(3) is one of the most promising anode materials for aqueous aluminum batteries due to its high theoretical capacity and suitable aluminum insertion/de-insertion potential.However,the inferior cycling stability limits its further application,and the failure mechanism is still unclear.In this article,we provide a straightforward potential regulation technique to manage phase evolution during the charge/discharge process,which ultimately results in a markedly enhanced MoO_(3) electrode cycling stability.The failure mechanism study reveals that the excessive oxidation of the electrode during charge/discharge generates the H_(0.34)MoO_(3) phase,which has high solubility and is the primary cause of MoO_(3) deactivation.Although the dissolved Mo species will be deposited onto the electrode sheet again,the deposition is not electrochemically active and cannot contribute to the capacitance.Controlling the cutoff potential prevented the production of H_(0.34)MoO_(3),resulting in excellent cycling performance(80.1% capacity retention after 4000 cycles).The as-assembled α-MoO_(3)//MnO_(2) full battery exhibits high discharge plateaus(1.4 and 0.9 V),large specific capacity(200 mAhg^(-1) at 2 Ag^(-1)),and ultra-high coulombic efficiency(99%).The research presented here may contribute to the development of highly stable electrode materials for aqueous batteries. 展开更多
关键词 aqueous aluminum ion battery molybdenum trioxide potential regulation aqueous battery ANODE
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Physiological responses and adjustment mechanisms of the dominate species of natural vegetation of Eastern Tengger Desert 被引量:1
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作者 HaiYan Zhou HuiJuan Tan +3 位作者 ZhiShan Zhang XiaoHong Jia HengWen Fan JianLi Yuan 《Research in Cold and Arid Regions》 2010年第5期455-463,共9页
Reaumuria soongorica and Salsola passerina have significant differences in ecophysiological characteristics, which change with the environmental variations. Although they live together for a long period of time, their... Reaumuria soongorica and Salsola passerina have significant differences in ecophysiological characteristics, which change with the environmental variations. Although they live together for a long period of time, their adaptive mechanisms to environmental stresses are very different. As two extreme xerophytes, Reaumuria soongorica and Salsola passerina differ significantly from other psammophytes in ecophysiological characteristics; they can survive in lower water potential, and can even grow in piedmont areas. Low water potential may be related to the existence of osmosis-regulating substance, such as praline, which can strengthen the capacity of water absorption. Compared to other psammophytes, Reaumuria soongorica and Salsola passerina have a higher degree of photo-inhibition under the same condition, and the photo-inhibition can lead to destruction of the photosynthetic pigment, nevertheless, this photo-inhibition can be repaired under suitable conditions in the morning and evening. 展开更多
关键词 gas exchange water potential osmosis regulating Reaumuria soongorica Salsola passerina
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Assembling structurally customizable synthetic carriers of si RNA through thermodynamically self-regulated process
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作者 Guang Bai Tong Xue +4 位作者 Xiaotao Dong Uday Kumar Chinta Jia Feng Tuo Jin Fei Wu 《Asian Journal of Pharmaceutical Sciences》 SCIE CAS 2020年第3期356-364,共9页
This study demonstrates that our previously reported polywraplex, a synthetic siRNA carrier consisting of a uni-molecular polyplex core of customizable size and a self-assembled triblock copolymer envelop, may be cons... This study demonstrates that our previously reported polywraplex, a synthetic siRNA carrier consisting of a uni-molecular polyplex core of customizable size and a self-assembled triblock copolymer envelop, may be constructed using dendrimers as the crosslinking junctions. Replacing the branched low molecular weight PEI with polyamidoamine(PAMAM) dendrimer in the zeta potential regulated polymerization resulted in the similar network structured cationic polymer with electron microscopically visible crosslinking junctions. This visibility may offer a convenient way to characterize the molecular structure of the rationally designed networked siRNA-packing cationic polymer without altering its chemical properties and biologic functions. A series of physical-chemical characterizations and biological assays, comprising size, zeta potential, pre-phagocytic siRNA leaking and degradation, and silencing of functional genes, confirmed that the advanced properties of polywraplexes remained with the dendrimer junctions. Although sixth generation PAMAM dendrimer was used as the crosslinking junctions in the size-customizable polymerization for electron microscopic observation, lower generation dendrimer should also work in case more practical and structurally defined cationic polymer is needed. 展开更多
关键词 Networked cationic polymer Thermodynamically self-regulated processes siRNA delivery Unimolecular polyplex Zeta potential regulated polymerization
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Spatiotemporal drivers of Nature's contributions to people:A countylevel study
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作者 Wei Jiang Bojie Fu +6 位作者 Zhongguo Shu Yihe Lv Guangyao Gao Xiaoming Feng Stefan Schüler Xing Wu Cong Wang 《Environmental Science and Ecotechnology》 SCIE 2024年第4期323-332,共10页
Nature's contributions to people(NCP)encompass both the beneficial and detrimental effects of living nature on human quality of life,including regulatory,material,and non-material contributions.Globally,vital NCPs... Nature's contributions to people(NCP)encompass both the beneficial and detrimental effects of living nature on human quality of life,including regulatory,material,and non-material contributions.Globally,vital NCPs have been deteriorating,accelerated by changes in both natural and anthropogenic drivers over recent decades.Despite the often inevitable trade-offs between NCPs due to their spatially and temporally uneven distributions,few studies have quantitatively assessed the impacts of different drivers on the spatial and temporal changes in multiple NCPs and their interrelationships.Here we evaluate the effects of precipitation,temperature,population,gross domestic product,vegetation restoration,and urban expansion on four key regulatory NCPs-habitat maintenance,climate regulation,water quantity regulation,and soil protection-in Nei Mongol at the county level.We observe increasing trends in climate regulation and soil protection from 2000 to 2019,contrasted with declining trends in habitat maintenance and water quantity regulation.We have identified the dominant positive and negative drivers influencing each NCP across individual counties,finding that natural drivers predominantly overpowered anthropogenic drivers.Furthermore,we discover significant spatial disparities in the tradeoff or synergy relationships between NCPs across the counties.Our findings illustrate how the impacts of various drivers on NCPs and their interrelationships can be quantitatively evaluated,offering significant potential for application in various spatial scales.With an understanding of trade-offs and scale effects,these insights are expected to support and inform policymaking at both county and provincial levels. 展开更多
关键词 potential regulating contributions Natural and anthropogenic drivers Path analysis Trade-off or synergy relationship China
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