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Advances in the structure design of substrate materials for zinc anode of aqueous zinc ion batteries

Green Energy & Environment 2023年第6期8卷 1531-1552页

作者： Sinian Yang Hongxia Du Yuting Li Xiangsi Wu bensheng xiao Zhangxing He Qiaobao Zhang Xianwen Wu School of Chemistry and Chemical Engineering Jishou UniversityJishou416000China School of Chemical Engineering North China University of Science and TechnologyTangshan063009China Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen361005China Key Laboratory of High Performance Ceramics Fibers(Xiamen University) Ministry of EducationXiamen361005China

Aqueous zinc ion batteries(AZIBs) demonstrate tremendous competitiveness and application prospects because of their abundant resources,low cost, high safety, and environmental friendliness. Although the advanced electrochemical energy storage systems based on zinc ion batteries have been greatly developed, many severe problems associated with Zn anode impede its practical application, such as the dendrite formation,hydrogen evolution, corrosion and passivation phenomenon. To address these drawbacks, electrolytes, separators, zinc alloys, interfacial modification and structural design of Zn anode have been employed at present by scientists. Among them, the structural design for zinc anode is relatively mature, which is generally believed to enhance the electroactive surface area of zinc anode, reduce local current density, and promote the uniform distribution of zinc ions on the surface of anode. In order to explore new research directions, it is crucial to systematically summarize the structural design of anode materials. Herein, this review focuses on the challenges in Zn anode, modification strategies and the three-dimensional(3D) structure design of substrate materials for Zn anode including carbon substrate materials, metal substrate materials and other substrate materials. Finally, future directions and perspectives about the Zn anode are presented for developing high-performance AZIBs.

关键词： Zinc ion battery Structure design of substrate materials Dendrite-free 3D Zn anode

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Understanding the growth mechanisms of metal-based core–shell nanostructures revealed by in situ liquid cell transmission electron microscopy

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Journal of Energy Chemistry 2022年第8期31卷 370-383,I0010页

作者： Junyu Zhang bensheng xiao Junhui Zhao Miao Li Haichen Lin Zewen Kang Xianwen Wu Haodong Liu Dong-Liang Peng Qiaobao Zhang Instrumental Analysis Center Laboratory and Equipment Management DepartmentHuaqiao UniversityXiamen 361021FujianChina Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005FujianChina College of Materials Science and Engineering Huaqiao UniversityXiamen 361021FujianChina College of Chemical Engineering Huaqiao UniversityXiamen 361021FujianChina Chemical Engineering UC San DiegoLa JollaCA 92093United States School of Chemistry and Chemical Engineering Jishou UniversityJishou 416000HunanChina

Metal-based core-shell nanostructures have garnered enduring interest due to their unique properties and functionalities.However,their growth and transformation mechanisms in liquid media remain largely unknown because they lack direct observation of the dynamic growth process with high spatial and temporal resolution.Developing the in situ liquid cell transmission electron microscopy(TEM)technique offers unprecedented real-time imaging and spectroscopy capabilities to directly track the evolution of structural and chemical transformation of metal-based core–shell nanostructures in liquid media under their working condition.Here,this review highlights recent progress in utilizing in situ liquid cell TEM characterization technique in investigating the dynamic evolution of material structure and morphology of metal-based core–shell nanostructures at the nano/atomic scale in real-time.A brief introduction of the development of liquid cells for in situ TEM is first given.Subsequently,recent advances in in situ liquid cell TEM for the fundamental study of growth mechanisms of metal based core–shell nanostructures are discussed.Finally,the challenge and future developments of metalbased core–shell nanostructures for in situ liquid cell TEM are proposed.Our review is anticipated to inspire ongoing interest in revealing unseen growth dynamics of core–shell nanostructures by in situ liquid cell TEM technique.

关键词： In situ liquid cell TEM Metal-based core–shell nanostructures Growth mechanisms

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Atomic mechanisms of hexagonal close-packed Ni nanocrystallization revealed by in situ liquid cell transmission electron microscopy

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Nano Research 2022年第7期15卷 6772-6778页

作者： Junyu Zhang Miao Li Zewen Kang bensheng xiao Haichen Lin Jingyu Lu Haodong Liu Xue Zhang Dong-Liang Peng Qiaobao Zhang Instrumental Analysis Center Laboratory and Equipment Management DepartmentHuaqiao UniversityXiamen 361021China Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005China College of Chemical Engineering Huaqiao UniversityXiamen 361021China Center for Materials and Interfaces Shenzhen Institutes of Advanced TechnologyChinese Academy of Sciences1068 Xueyuan AvenueShenzhen 518055China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361005China School of Science Harbin Institute of Technology(Shenzhen)Shenzhen 518055China Chemical Engineering University of California San DiegoLa JollaCA 92093USA

The fundamental understanding of the mechanism underlying the early stages of crystallization of hexagonal-close-packed(hcp)nanocrystals is crucial for their synthesis with desired properties,but it remains a significant challenge.Here,we report using in situ liquid cell transmission electron microscopy(TEM)to directly capture the dynamic nucleation process and track the real-time growth pathway of hcp Ni nanocrystals at the atomic scale.It is demonstrated that the growth of amorphous-phase-mediated hcp Ni nanocrystals is from the metal-rich liquid phases.In addition,the reshaped preatomic facet development of a single nanocrystal is also imaged.Theoretical calculations further identify the non-classical features of hcp Ni crystallization.These discoveries could enrich the nucleation and growth model theory and provide useful information for the rational design of synthesis pathways of hcp nanocrystals.

关键词： hexagonal-close-packed(hcp)nanocrystals liquid cell transmission electron microscopy(TEM) amorphous-phasemediated reshape

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Achieving high-capacity and long-life K^(+)storage enabled by constructing yolk-shell Sb_(2)S_(3)@N,S-doped carbon nanorod anodes

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Journal of Energy Chemistry 2023年第1期76卷 547-556,I0014页

作者： bensheng xiao Hehe Zhang Zhefei Sun Miao Li Yingzhu Fan Haichen Lin Haodong Liu Bing Jiang Yanbin Shen Ming-Sheng Wang Meicheng Li Qiaobao Zhang Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005FujianChina Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials(Xiamen University) Xiamen 361005FujianChina Department of Nanoengineering University of California San DiegoLa JollaCA92093United States State Key Laboratory of Altermate Electrical Power System with Renewable Energy Sources Schoolof New EnergyNorth China Electric Power UniversityBeijing 102206China i-Lab CAS Center for Excellence in NanoscienceSuzhou Institute of Nano-Tech and Nano-Bionics(SINANO)Chinese Academy of SciencesSuzhou 215123JiangsuChina

As promising anode candidates for potassium-ion batteries(PIBs),antimony sulfide(Sb_(2)S_(3))possesses high specific capacity but suffers from massive volume expansion and sluggish kinetics due to the large K^(+)insertion,resulting in inferior cycling and rate performance.To address these challenges,a yolk-shell structured Sb_(2)S_(3)confined in N,S co-doped hollow carbon nanorod(YS-Sb_(2)S_(3)@NSC)working as a viable anode for PIBs is proposed.As directly verified by in situ transmission electron microscopy(TEM),the buffer space between the Sb_(2)S_(3)core and thin carbon shell can effectively accommodate the large expansion stress of Sb_(2)S_(3)without cracking the shell and the carbon shell can accelerate electron transport and K^(+)diffusion,which plays a significant role in reinforcing the structural stability and facilitating charge transfer.As a result,the YS-Sb_(2)S_(3)@NSC electrode delivers a high reversible K^(+)storage capacity of 594.58 m A h g^(-1)at 0.1 A g^(-1)and a long cycle life with a slight capacity degradation(0.01%per cycle)for 2000 cycles at 1 A g^(-1)while maintaining outstanding rate capability.Importantly,utilizing in in situ/ex situ microscopic and spectroscopic characterizations,the origins of performance enhancement and K^(+)storage mechanism of Sb_(2)S_(3)were clearly elucidated.This work provides valuable insights into the rational design of high-performance and durable transition metal sulfides-based anodes for PIBs.

关键词： Antimony sulfide Yolk-shell structure In situ TEM Potassium-ion batteries Super-stable cyclability

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Synergistic coupling of amorphous carbon and graphitic domains toward high-rate and long-life K^(+) storage

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Journal of Energy Chemistry 2022年第10期31卷 533-541,I0013页

作者： Hehe Zhang Wangqin Li Jianhai Pan Zhefei Sun bensheng xiao Weibin Ye Chengzhi Ke Haowen Gao Yong Cheng Qiaobao Zhang Ming-Sheng Wang State Key Laboratory of Physical Chemistry of Solid Surfaces College of MaterialsXiamen UniversityXiamen 361005FujianChina Fujian Key Laboratory of Surface and Interface Engineering for High Performance Materials(Xiamen University) Xiamen 361005FujianChina

Amorphous carbon materials hold great potential for practical use in potassium-ion batteries(PIBs)due to their abundant resources,low cost and high structural stability.However,given the challenge of sluggish potassiation kinetics,the rate performance of amorphous carbon is severely hindered.Herein,amorphous carbon compounded with graphitic domains(HG-CNTs)was proposed as an advanced anode for PIBs.As directly verified by in situ transmission electron microscopy(TEM),the graphitic domains guarantee fast K-ions transport in the carbon composite at a high current density,while the amorphous carbon shells ensure the structural integrity during potassiation,thus boosting its fast and durable K^(+)storage.As a PlB anode,the HG-CNTs electrode exhibits not only a super-stable long-term cyclability(191.6 mAh g^(-1)at 1 A g^(-1)with almost no capacity decay over 3000 cycles),but also an outstanding rate performance(184.5 mAh g^(-1)at 2 A g^(-1)).Ex situ Raman and TEM results further suggest that the highly reversible structure of HG-CNTs is responsible for its superior electrochemical stability.This work provides helpful insights into the development of carbonaceous electrodes with both high rate capability and long cycle life for PIBs.

关键词： Potassium-ion batteries Amorphous carbon Graphitic domains Synergistic effect In situ TEM

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构建分级结构碳包覆的MoSSe纳米片/多孔碳微球复合材料显著提升储钾性能

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Science Bulletin 2022年第9期67卷 933-945,M0004页

作者： Mengting Cai Hehe Zhang Yinggan Zhang bensheng xiao Lei Wang Miao Li Ying Wu Baisheng Sa Honggang Liao Li Zhang Shuangqiang Chen Dong-Liang Peng Ming-Sheng Wang Qiaobao Zhang Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005China Department of Chemical Engineering School of Environmental and Chemical EngineeringShanghai UniversityShanghai 200444China School of Materials and Energy Lanzhou UniversityLanzhou 730000China College of Chemistry and Chemical Engineering Xiamen UniversityXiamen 361005China Key Laboratory of Eco-materials Advanced Technology College of Materials Science and EngineeringFuzhou UniversityFuzhou 350108China Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province(IKKEM) Xiamen 361005China

研发能够有效缓解储钾过程中巨大的体积变化和加快反应动力学的先进负极材料,对于钾离子电池的实际应用至关重要.为此,本文报道了一种新颖分级结构薄层碳包覆的MoSSe纳米片/多孔碳微球复合负极材料Cs@MoSSe@C,能够显著提升储钾性能.在... 详细信息

研发能够有效缓解储钾过程中巨大的体积变化和加快反应动力学的先进负极材料,对于钾离子电池的实际应用至关重要.为此,本文报道了一种新颖分级结构薄层碳包覆的MoSSe纳米片/多孔碳微球复合负极材料Cs@MoSSe@C,能够显著提升储钾性能.在这种新颖结构中,多孔碳微球骨架上锚定的分级MoSSe纳米片具有较大的层间距和丰富的阴离子空位,有利于钾离子的快速嵌入、脱出,并能提供丰富的钾离子存储活性位点.同时,薄碳层和高度多孔的碳微球骨架可有效缓解充放电过程中体积膨胀和加快反应动力学,并维持电极结构稳定性.因此,研发的Cs@MoSSe@C负极材料及其组配的全电池都表现出了优异的循环稳定性和出色的倍率性能.此外,通过原位透射电镜技术、原位拉曼技术和非原位显微技术结合理论模拟揭示了其嵌入-转化反应储钾机理和获得优异电化学性能的本质原因.该工作为高性能过渡金属硫族化合物储钾负极材料的构筑与性能优化提供了实验依据和新策略.

关键词：负极材料充放电过程分级结构过渡金属硫族化合物电化学性能电极结构转化反应钾离子

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Effects of a periodic intermittent theta burst stimulation in Alzheimer's disease

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General Psychiatry 2024年第1期37卷 53-63页

作者： Xingqi Wu Yibing Yan Panpan Hu Lu Wang Yue Wu Pan Wu Zhi Geng Guixian xiao Shanshan Zhou Gongjun Ji bensheng Qiu Ling Wei Yanghua Tian Hesheng Liu Kai Wang Department of Neurology First ffiliated Hospital of Anhui Medical UniversityHefeiAnhuiChina School of Mental Health and Psychological Sciences Anhui Medical UniversityHefeiAnhuiChina Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders HefeiAnhuiChina Collaborative Innovation Center of Neuropsychiatric Disorders and Mental Health HefeiAnhuiChina Department of Psychology and Sleep Medicine The Second Affliated Hospital of Anhui Medical UniversityHefeiAnhuiChina Center for Biomedical Imaging University of Science and Technology of ChinaHefeiAnhuiChina institute of Artificial Intlligence Hefei Comprehensive National Science CenterHefeiAnhuiChina Department of Neuroscience Medical University of South CarolinaCharlestonSouth CarolinaUSA

Background Previous studies havedemonstrated that excitatory repetitive transcranial magnetic stimulation(rTMS)can improve the cognitive function of patients with Alzheimer's disease(AD).Intermittent theta burst stimulation(iTBS)is a novel excitatory rTMS protocol for brain activity stimulation with the ability to induce long-term potentiation-like plasticity and represents a promising treatment for AD.However,the long-term effects of iTBS on cognitive decline and brain structure in patients with AD areunknown.Aims We aimed to explore whether repeating accelerated iTBS every three months could slow down the cognitive decline in patients with AD.Methods In this randomised,assessor-blinded,controlled trial,iTBS was administered to the left dorsolateral prefrontal cortex(DLPFC)of 42 patients with AD for 14days every 13weeks.Measurements included the Montreal Cognitive Assessment(MoCA),a comprehensive neuropsychological battery,and the grey matter volume(GMV)of the hippocampus.Patients were evaluated at baseline and after follow-up.The longitudinal pipeline of the Computational Anatomy Toolbox for SPM was used to detect significant treatment-related changes over time.Results The iTBS group maintained MoCA scores relative to the control group(t=3.26,p=0.013)and reduced hippocampal atrophy,which was significantly correlated with global degeneration scale changes.The baseline Mini-Mental State Examination(MMSE)score,apolipoprotein E genotype and Clinical Dementia Rating were indicative of MoCA scores at follow-up.Moreover,the GMV of the left(t=0.08,p=0.996)and right(t=0.19,p=0.977)hippocampus were maintained in the active group but significantly declined in the control group(left:t=4.13,p<0.001;right:t=5.31,p<0.001).GMV change in the left(r=0.35,p=0.023)and right(r=0.36,p=0.021)hippocampus across the intervention positively correlated with MoCA changes;left hippocampal GMV change was negatively correlated with global degeneration scale(r=-0.32,p=0.041)changes.Conclusions DLPFC-iTBS maybe a feasible and easy-to-implement

关键词： stimulation Alzheimer maintained

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玉米秸秆中半纤维素的碱法提取

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大连工业大学学报 2022年第3期41卷 179-183页

作者：肖本胜刘冉李海明大连工业大学辽宁省生物质化学与材料重点实验室辽宁大连116034

针对水热法提取半纤维素耗时长、提取率低等不足,探讨了利用碱法提取玉米秸秆中半纤维素的工艺条件。采用单因素实验考察了液比、氢氧化钾质量浓度、保温温度、保温时间等因素对半纤维素提取率的影响,优化了玉米秸秆中半纤维素的碱法提... 详细信息

针对水热法提取半纤维素耗时长、提取率低等不足,探讨了利用碱法提取玉米秸秆中半纤维素的工艺条件。采用单因素实验考察了液比、氢氧化钾质量浓度、保温温度、保温时间等因素对半纤维素提取率的影响,优化了玉米秸秆中半纤维素的碱法提取工艺条件。碱法提取半纤维素的较适工艺条件为液比1∶12、碱液质量浓度60 g/L、保温温度80℃、保温时间120 min,较适条件下半纤维素的提取率为21.52%。红外光谱分析结果表明,液相分离提纯所得半纤维素产品主要成分为聚木糖。产品为下游生产功能性低聚糖提供了原料来源。

关键词：玉米秸秆半纤维素氢氧化钾木聚糖

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广东省流域控制性水利工程管理体制优化研究

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水利经济 2024年第3期42卷 102-108页

作者：肖洵谭超黄本胜罗志发张世发李宁宁广东省水利水电科学研究院广东广州510623 中山大学河口海岸研究所广东广州510275 广东省水安全科技协同创新中心广东广州510623 河口水利技术国家地方联合工程实验室广东广州510623 广东省水利学会广东广州510623

针对流域控制性水利工程存在管理主体多样、政府职能“缺位”、流域管理机构统筹监管能力不足等问题,为理顺流域控制性水利工程管理体制,在文献调研基础上提出了流域控制性水利工程定义,梳理确定了广东省流域控制性水利工程名录,提出了... 详细信息

针对流域控制性水利工程存在管理主体多样、政府职能“缺位”、流域管理机构统筹监管能力不足等问题,为理顺流域控制性水利工程管理体制,在文献调研基础上提出了流域控制性水利工程定义,梳理确定了广东省流域控制性水利工程名录,提出了省级流域控制性水利工程的5项条件,并结合国内外流域控制性水利工程管理体制建立的经验,提出了优化广东省流域控制性水利工程管理体制的具体措施。研究结果表明:广东省有新丰江水库等流域控制性水利工程22宗,其中应纳入省级管理的省级流域控制性水利工程有15宗,流域控制性水利工程应按照提出的分级管理、统筹调度、协同运维的管理模式加强管理。

关键词：流域控制性水利工程多目标管理管理体制分级管理广东省

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节水型流域建设路径探究——以广东省东江流域为例

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广东水利水电 2024年第3期 71-76,104页

作者：肖耿锋洪昌红黄本胜刘达成忠理陈颖悟广东省水利水电科学研究院广州510635 广东省水动学力应用研究重点实验室广州510635 广东省东江流域管理局广东惠州516000

为了探索节水型流域建设路径,并将广东省东江流域建设为我国首个节水型流域典范,该文通过分析东江流域水资源开发利用情况、用水节水特征和节水潜力,对比东江流域与钱塘江流域、闽江流域之间水资源节约集约利用情况,提出“1245”节水型... 详细信息

为了探索节水型流域建设路径,并将广东省东江流域建设为我国首个节水型流域典范,该文通过分析东江流域水资源开发利用情况、用水节水特征和节水潜力,对比东江流域与钱塘江流域、闽江流域之间水资源节约集约利用情况,提出“1245”节水型流域建设路径。结果显示:①东江流域存在农业和生活用水水平较低、地区节水水平不均衡等问题,流域农业、工业和服务业均存在较大节水潜力;②流域内河源市和惠州市需继续推进节水型城市和县域节水型社会建设,流域内各地市需持续强化农业、火电行业等重点节水举措。通过分析东江流域节水型社会建设情况并探究“1245”节水型流域建设路径,能有效为节水型流域建设提供借鉴。

关键词：东江流域节水型社会节水型城市县域节水型社会节水型流域典范

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