PDF《麦立强》

麦立强 One-dimensional nanomaterials can offer large surface area, facile strain relaxation upon cycling and efficient electron transport pathway to achieve high electrochemical performance.

Hence, nanowires have attracted increasing interest in energy related fields. We designed the single nanowire electrochemical device for in situ probing the direct relationship between electrical transport, structure, and electrochemical properties of the single nanowire electrode to understand intrinsic reason of capacity fading. As the battery was charged and discharged repeatedly, lithium was progressively incorporated into the electrode, causing it to lose its crystalline structure and weakening its conductivity. Then, we designed the general synthesis of complex nanotubes by gradient electrospinning, including Li3V2(PO4)3, Na0.7Fe0.7Mn0.3O2 and Co3O4 mesoporous nanotubes, which exhibit ultrastable electrochemical performance when used in lithium-ion batteries, sodium-ion batteries and supercapacitors, respectively. Besides, we identified the exciting electrochemical properties (including high electric conductivity, small volume change and self-preserving effect) and superior sodium storage performance of alkaline earth metal vanadates through preparing CaV4O9 nanowires. We also constructed a new-type carbon coated K0.7Fe0.5Mn0.5O2 interconnected nanowires through a simply electrospinning method. The interconnected nanowires exhibit a discharge capacity of

101 mAh g-1 after

60 cycles, when measured as a cathode for K-ion batteries. Our work presented here can inspire new thought in constructing novel one-dimensional structures and accelerate the development of energy storage applications. 报告摘要 报告人简介 One-Dimensional Nanomaterials for Energy Storage and Devices Wuhan University of Technology State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Liqiang Mai, Changjiang Scholar Chair Professor of Materials Physics and Chemistry, Distinguished Young Scholar of the National Science Fund of China, Dean for International Affairs of International School of Materials Science and Engineering at Wuhan University of Technology. He received Ph.D. degree from WUT in

2004 and carried out postdoctoral research in Prof. Zhonglin Wang'

s group at Georgia Institute of Technology (2006-2007). He worked as an advanced research scholar in Prof. Charles M. Lieber'

s group at Harvard University (2008-2011) and Prof. Peidong Yang'

s group at University of California, Berkeley (2017). Prof. Liqiang Mai is mainly engaged in research field of nano energy materials and micro/nano devices. He has published over

200 papers tagged by SCI in leading journals such as Nat. Nanotechnol., Nat. Commun., Adv Mater., J. Am. Chem. Soc., etc. He has conducted more than

30 research projects as project principal such as National Basic Research Program of China, National Natural Science Foundation of China, etc. He is the winner of China Youth Science and Technology Award, and Guanghua Engineering Award, Nanoscience Research Leader award, etc. He is the guest editor of Adv. Mater., and serves on the Editorial and Advisory Boards of Joule (Cell press), Adv. Electron. Mater., Nano Res. and Sci. China Mater. 黄云辉 报告人简介 华中科技大学动力与储能电池实验室 华中科技大学教授,博导,教育部 长江学者 特聘教授,国家杰出 青年科学基金获得者,新世纪 百千万人才工程 国家级人选,国务院政 府特殊津贴获得者.在北京大学获得学士、硕士和博士学位. 主要研究领域为锂离子动力与储能电池、 下一代锂硫电池和锂-空气电 池、 钠离子电池、 固体氧化物燃料电池, 在Science、 Chem. Soc. Rev.、 Energy Environ. Sci.、Adv. Mater.、J. Am. Chem. Soc.等期刊上发表论文

280 余篇, 引用 1.2 万次, 授权或公开专利

20 余项.

2015 年获教育部自然科学一等奖,

2016 年获国家自然科学二等奖. 郑耿锋 Electrocatalysts play a prominent role in the renewable energy conversion and storage applications, including hydrogen evolution reaction (HER), oxygen evolution reaction (OER), oxygen reduction reaction (ORR), and carbon dioxide reduction (CO2RR). Here we will briefly introduce our recent work in developing some of these electrocatalysts, together with theoretical calculations for rational structure designs and reaction mechanism understandings. Several representative examples using earth-abundant metal (hydro)oxides and carbons include: (1) hybrid hydroxide nanowire-nanoflake assembly for bifunctional HER/OER, (2) metal oxide@carbon superlattices for bifunctional HER/OER, (3) mesoporous oxide@carbon for bifunctional ORR/OER, and (4) tuning of nitrogen doping types in carbon nanostructures for CO2RR. Attributed to their high electrochemically active surface area, fast charge transport, efficient mass transfer and gas release, these nanostructured electrocatalysts enable much enhanced activity, such as reduced overpotentials, high current densities and long stability. In addition, we also demonstrate that by reversing the catalyst design concepts, new battery electrodes with substantially enhanced energy storage density and power density can also be realized 报告摘要 报告人简介 Nanostructured Bifunctional Redox Electrocatalysts 郑耿锋,复旦大学教授、博士生导师.主要研究领域为:面向光电催 化、电化学储能的纳米复合功能材料与界面. 近五年发表通讯作者论文

80 余篇, (其中影响因子在

10 以上的论文 有30 多篇) ,论文的总他引次数

9000 多次.曾获得基金委优秀青年科学 基金、中国化学会青年化学奖、宝钢基金会优秀教师奖、教育部新世纪优 秀人才、上海市东方学者、上海市育才奖、上海市青年五四奖章等奖励. 目前兼任国际期刊 J. Colloid and Interface Science 的副主编,J. Materials Chemistry A 杂志的编委. Fudan University Laboratory of Advanced Materials Department of Chemistry 余彦Sodium-ion batteries are of major importance, especially for large-scale energy storage devices, due to low cost and abundant source of sodium. As for the anode side, commercial graphite shows a limited capacity for sodium storage (31 mAh g-1 using ethyl-methyl carbonate-based electrolyte and

100 mAh g-1 using ether-based electrolyte). Compared to graphite based intercalation, the electrode materials based on conversion and alloy have been identified as promising anode candidates for sodium storage due to high theoretical capacity. However, poor kinetics and large volume change result in a low reversible capacity and fast capacity decay. In principle, nanostructrual electrode materials can boost sodium storage kinetics because of shortening the chemical diffusion length of sodium. In reality, a multitude of challenging kinetic and structure stability problems, such as agglomeration of nanoparticles, increased contact resistance, and instability of solid electrolyte interphase (SEI) layers may be met and prevent their use in commercial sodium-ion batteries. In order to address the above problems, we have designed and synthesized a series of carbon-based hybrid materials with hierarchical structures, such as carbon nanowire-encapsulated selenides, carbon nanosheet-supported sulfides, and mesoporous carbon-encapsulated phosphorus. These multi-scale and hierarchically organized structures construct a highly efficient and stable mixed conductive network around the nano-active components. At the same time, they can keep the electrode integrity on cycling. These lead to excellent electrochemical performance for the obtained electrode materials in terms of reversibility, rate capability, and cycling stability. For example, the carbon nanosheet/MoS2 hybrids deliver a capacity of

235 mAh g?1 after

350 cycles at 0.2 A g?1 without obvious capacity decay compared to the initial cycle. The amorphous red P/mesoporous carbon displays a reversible capacity of

1020 mAh g?1 based on the mass of red P after

210 cycles at 5C. 报告摘要 报告人简介 Carbon-based hybrid materials for high performance Na-ion batteries 余彦,中国科学技术大学材料科学与工程系教授,博士生导师. 中 组部首批青年千人;

国家优秀青年基金获得者.2001 年毕业于安徽大学获 得学士学位;

2006 年获得中国科学技术大学博士学位, 随后在美国 (Florida International University)和德国马普固体研究所(Max Planck Institute for Solid State Research)从事科学研究工作.2012 年加入中科大,任教授, 博导.主要研究方向为高性能锂离子电池、钠离子电池、锂硫电池等关键 电极材料的设计、合成及储能机制.目前在 J. Am. Chem. Soc., Angew. Chem. Int. Ed., Adv. Mater., Nano Lett., Energy Environ. Sci., 等国际著名期 刊上发表论文

130 余篇,以第一/通讯作者发表 SCI 论文中 IF>

10 的总共

40 余篇, 其中包括 Adv. Mater.

17 篇, Angew. Chem. Int. Ed.

5 篇, Nano Lett.

7 篇,Energy &

Environmental Science

1 篇,J. Am. Chem. Soc.

1 篇, ACS Nano

2 篇, Adv. Funct. Mat........