窦辉
Professor Supervisor of Doctorate Candidates
Gender:Female
Education Level:中科院成都有机化学所
Degree:Doctoral Degree in Science
School/Department:College of Material Science and Technology
Discipline:Inorganic Chemistry. 能源动力. Organic Chemistry. Polymer Chemistry and Physics. Physical Chemistry. Material Physics and Chemistry
Business Address:材料科学与技术学院D10-B201
Contact Information:dh_msc@nuaa.edu.cn
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Affiliation of Author(s):材料科学与技术学院
Journal:CHEMELECTROCHEM
Key Words:activated carbon lithium-ion capacitors niobium oxide nitrogen doping surface nitrogenization
Abstract:Recently, lithium-ion capacitors (LICs) combining the complementary characteristics of both lithium-ion batteries (LIBs) and supercapacitors, have received exhaustive investigation to meet the increasing demands for clean energy. However, their commercial application has been limited by the mismatch of charge-storage capacity and electrode kinetics between the capacitor-type cathode and battery-type anode. Thus, developing a novel high-power insertion anode material is the key to realizing excellent energy and power densities for LICs. Here, 3D hierarchical Nb2O5 microspheres assembled by surface-nitrogenated nanowires have been synthesized through a unique anti-solvent precipitation-assisted solvothermal route accompanied by a nitrogenization treatment, which can be successfully used for advanced LICs configuration. Owing to the high aspect ratio of ultrathin nanowires, unique pore structures caused by nitridation, improved electronic conductivity, and favorable kinetic stemming from pseudocapacitive behavior, the resultant nitrogenated Nb2O5 microspheres can deliver a high capacity of 205.3mAhg(-1) with remarkable rate capability and long lifespan. When constructed into a new LIC device with peanut-shell derived carbon (PSC) cathode, an exceptionally high energy density of approximate to 83.5Whkg(-1) and a high power density of 10kWkg(-1) with prominent cycling stability are realized. Significantly, the simultaneous manipulation of superstructure design and surface nitrogenization in novel anode material provides new opportunities to boost the energy and power densities for hybrid-ion capacitors.
ISSN No.:2196-0216
Translation or Not:no
Date of Publication:2018-06-04
Co-author:陈志杰,李洪森,卢晓霞,吴朗源,蒋江明,蒋松柏,王君君,Zhang Xiaogang
Correspondence Author:Zhang Xiaogang,Dou Hui
毕业于中国科学院成都有机化学研究所,研究领域为电化学储能材料与器件,包括超级电容器、锂离子电池、锌碘电池、质子电池、锂硫电池、锌离子电池等。研究方向包括纳米结构复合电极材料、有机电极材料、硅负极粘结剂、电解质等的设计及可控制备。作为项目负责人先后承担了国家自然科学基金及江苏省自然基金等项目多项,作为学术骨干参加了国家重点研发项目、江苏省前沿引领基础研究专项、江苏省重点研发计划、国家“973”计划等课题。获得省部级奖项2项,其他奖项2项。以第一作者或通讯作者身份在Adv. Funct. Mater., Chem. Comm., ACS nano, Energy storage Mater., ACS Appl. Mater. Interfaces, J. Mater. Chem. A, J. Power Sources, Green Chem.等学术刊物上发表电化学能源相关研究论文70余篇;作为通讯作者受邀在ChemElectroChem、Mater. Today、Small Methods、Chin. Chem. Lett.撰写发表相关综述论文4篇。担任全国离子液体专业委员会委员、江苏省化学化工学会理事、教育部学位论文评审专家、江苏省科技厅、江西省科技厅评审专家等社会服务工作。受邀为Angewandte Chemie、Adv. Mater.、Adv. Funct. Mater.、 J. Mater. Chem. A、Chem. Eng. J.等国际期刊审稿人。