学校首页 联系我们 院长信箱

首页 >> 学院新闻 >> 正文

    我院杜伟教授团队在碳材料多方向交叉研究中取得重要进展

    2021-03-17  来源:   编辑:环境与材料工程学院  浏览:

    近日,我院杜伟教授课题组在国际知名期刊Journal of Colloid and Interface Science(中科院2020年升级版一区TOP)发表题为“Efficient microwave absorber and supercapacitors derived from puffed-rice-based biomass carbon: Effects of activating temperature”的研究论文(DOI10.1016/j.jcis.2021.03.025,第一作者解秀波博士,通讯作者杜伟教授)。

    该论文探讨了活化温度对爆米花生物质碳材料的形貌影响规律,研究了其电磁波吸收及其电化学性能。研究发现活化温度为800℃的样品兼具优异的电磁波吸收及比电容性能。样品低于-10dB的吸波频宽达到13.2GHz,低于-20dB的吸波频宽达7.0GHz。在1 A g-1的电流密度小,R-800样品的比电容高达117.2 F g-1,在10A g-1时的电容保持率为85.3%,循环5000次后库伦效率高达98.8%

    1 爆米花(a),预碳化(b),碳化后照片(c),不同活化温度下的SEM照片,500(d)750(e)800(f)850(g)900(h)

    2 爆米花生物质碳作为吸波剂及超级电容器电极材料性能及机理图

    课题组目前致力于研发高性能的适用于多研究方向的多功能生物质碳材料,旨在为经济社会可持续发展提供绿色能源载体材料。近三年,课题组还在吸波材料方向做出创新性工作,系统研究了氧化钴颗粒氧化过程中形貌、结构的演变规律及其对吸波性能的影响机理(Chemical Engineering Journal10.1016/j.cej.2020.125205),该项工作被Web of Science评为高被引论文,解秀波博士为第一作者。此外,课题组研究了莲蓬、酵母细胞壁、花生壳及浒苔等多种生物质碳材料的电化学性能及重金属离子吸附性能:制备的MnO2-莲蓬碳复合材料比电容优异,实现了废弃物再利用(Journal of Electroanalytical Chemistry10.1016/j.jelechem.2019.113561);制备的磁性Fe3O4纳米颗粒修饰的浒苔碳复合材料生物毒性低、吸收Cr效率高(Journal of Hazardous Materials10.1016/j.jhazmat.2020.122658);制备双壳结构过渡金属硫化物NiS/多孔空心碳微球比电容高达531.5 C g−1Journal of Materials Science10.1007/s10853-020-05022-6);制备中空生物细胞碳/MnO2电极实现超高电容性能(Electrochimica Acta10.1016/j.electacta.2018.11.074),该论文自发表以来得到了同行的高度认可,被Web of Science持续评为热点论文,被引用已超过200次。

    3不同样品的SEM照片,(a, b) 酵母细胞模板, (c) MnO2/酵母细胞模板-20, (d, e, f) MnO2/酵母细胞模板-30, (g, h) MnO2/酵母细胞模板-40, 对应的元素分布图(i)

    谈及研究应用前景,杜伟教授指出,随着科学技术的快速发展,电子设备、无线电信号传输充斥人类周围,带来严重的电磁污染问题,这些问题阻碍了无线传输技术的进一步发展,并对人类的生活健康造成潜在威胁。开发高性能电磁波吸收材料能有效解决该类问题。而最为理想的吸波材料需具备“薄、轻、宽、强”的特点。在众多材料中,碳材料具有高的介电性能,同时碳的形貌多样化能够对电磁波损耗起促进作用。生物质碳材料具有诸多独特优点,如来源广泛、制备工艺简单、环境友好、质轻多孔比表面积大等,是目前研究最为广泛的电磁波吸收材料之一。此外,生物质碳材料的高导电、抗酸碱腐蚀、形貌易于调控等特性也使其在超级电容器电极材料方面有着重要的应用。

    氢气作为清洁能源载体解决环境污染和化石资源枯竭问题,被认为是最具潜力的能源载体之一。作为氢能利用的重要中间环节,开发安全、有效的储氢材料至关重要。基于镁系金属氢化物储氢材料的低廉、高理论储氢容量等特点,课题组将聚焦该清洁能源材料的研发工作。围绕构建核壳结构材料以实现纳米化和催化协同作用的思路,前期开发了一系列类核壳结构材料。课题组目前正致力于研发含Al-V催化剂的连续核壳结构镁储氢材料。另一方面,生物质碳材料作为纳米限域材料,在合成尺寸仅为几十纳米的的镁系储氢材料方面具有独特的优势。如果能够探索出一条有效控制碳形貌、颗粒尺寸的方法,镁基储氢颗粒的热力学及动力学性能将显著提高。

    课题组近两年发表文章列表:

    1. D. Wu, H.Y. Yu, C.X. Hou, W. Du*, X.H. Song, T.S. Shi, X.Q. Sun, B. Wang, NiS nanoparticles assembled on biological cell walls-derived porous hollow carbon spheres as a novel battery-type electrode for hybrid supercapacitor. J. Mater. Sci. 55 (2020) 14431-14446. https://doi.org/10.1007/s10853-020-05022-6

    2. D. Wu, X.B. Xie, Y.P. Zhang, D.M. Zhang, W. Du*, X.Y. Zhang, B. Wang, MnO2/Carbon Composites for Supercapacitor: Synthesis and Electrochemical Performance. Frontiers In Materials 7 (2020) 2. https://doi.org/10.3389/fmats.2020.00002.

    3. H. L. Wei, X.N. Wang, D.M. Zhang, W. Du*, X.Q. Sun, F.Y. Jiang, T.S. Shi, Facile synthesis of lotus seedpod-based 3D hollow porous activated carbon/manganese dioxide composite for supercapacitor electrode. J. Electroanal. Chem. 853 (2019) 113561. https://doi.org/10.1016/j.jelechem.2019.113561.

    4. X. N. Wang, H.L. Wei, X.Z. Liu, W. Du*, X.J. Zhao, X.L. Wang, Novel three-dimensional polyaniline nanothorns vertically grown on buckypaper as high-performance supercapacitor electrode. Nanotechnology 30 (2019) 325401. https://doi.org/10.1088/1361-6528/ab156d.

    5. X. N. Wang, D. Wu*, X.H. Song, W. Du, X.J. Zhao, D.M. Zhang, Review on Carbon/Polyaniline Hybrids: Design and Synthesis for Supercapacitor. Molecules 24 (2019) 2263. https://doi.org/10.3390/molecules24122263.

    6. W. Du*, X.N. Wang, J. Zhan, X.Q. Sun, L.T. Kang, F.Y. Jiang, X.Y. Zhang, Q. Shao, M.Y. Dong, H. Liu, V. Murugadoss, Z.H. Guo, Biological cell template synthesis of nitrogen-doped porous hollow carbon spheres/MnO2 composites for high-performance asymmetric supercapacitors. Electrochimica Acta 296 (2019) 907-915. https://doi.org/10.1016/j.electacta.2018.11.074.

    7. X.B. Xie*, C.X. Hou, C.G. Chen, X.Q. Sun, Y. Pang, Y.P. Zhang, R.H. Yu*, B. Wang, Wei Du*, First-principles studies in Mg-based hydrogen storage Materials: A review. Energy, 211 (2020) 118959. https://doi.org/10.1016/j.energy.2020.118959.

    8. X.B. Xie*, D. Wu, H.T. Wu, C.X. Hou, X.Q. Sun, Y.P. Zhang, R.H. Yu, S.Z. Zhang, B. Wang, W. Du*, Dielectric parameters of activated carbon derived from rosewood and corncob. J. Mater. Sci.: Mater. Electron. 31 (2020) 18077-18084. https://doi.org/10.1007/s10854-020-04358-8.

    9. X.B. Xie*, C. Ni, Z.H. Lin, D. Wu, X.Q. Sun, Y.P. Zhang, B. Wang, W. Du*, Phase and morphology evolution of high dielectric CoO/Co3O4 particles with Co3O4 nanoneedles on surface for excellent microwave absorption application. Chem. Eng. J. 396 (2020) 125205. https://doi.org/10.1016/j.cej.2020.125205.

    10. C. Ni, D. Wu, X. B. Xie*, B. L. Wang, H. L. Wei, Y. P. Zhang, X. J. Zhao, L. Liu, B. Wang and W. Du*, Microwave absorption properties of microporous CoNi@(NiO-CoO) nanoparticles through dealloying. J. Magn. Magn. Mater. 2020, 503, 166631. https://doi.org/10.1016/j.jmmm.2020.166631.

    11. X.B. Xie*, C. Ni, B.L. Wang, Y.P. Zhang, X.J. Zhao, L. Liu, B. Wang, W. Du*, Recent advances in hydrogen generation process via hydrolysis of Mg-based materials: A short review. J. Alloys. Compd. 2020, 816, 152634. https://doi.org/10.1016/j.jallcom.2019.152634.

    12. X.B. Xie*, C. Ni, H.Y. Yu*, W. Du, X.Q. Sun, D.B. Sun, Facile fabrication of Co@C nanoparticles with different carbon-shell thicknesses: high-performance microwave absorber and efficient catalyst for the reduction of 4-nitrophenol. CrysEngComm, 2020, 22, 4591-4601. https://doi.org/10.1039/D0CE00250J

    13. Y.P. Zhang, Y.H. Shen*, X.B. Xie, W. Du*, L.T. Kang, Y. Wang, X.Q. Sun, Z.H. Li, B. Wang, One-step synthesis of the reduced graphene oxide@NiO composites for supercapacitor electrodes by electrode-assisted plasma electrolysis. Mater. Des. 2020, 196, 109111. https://doi.org/10.1016/j.matdes.2020.109111.

    14. C.X. Hou*, G. Fan, X.B. Xie, X. Zhang, X. Sun, Y. Zhang, B. Wang, W. Du*, R. Fan, TiN/Al2O3binary ceramics for negative permittivity metacompositesat kHz frequencies, J. Alloys Compd., 2021,855,157499. https://doi.org/10.1016/j.jallcom.2020.157499.

       

     

    上一条:奉献青春力量 践行责任担当——我院彩云支南协会“七彩四点半”志愿服务项目举行新学期启动仪式 下一条:学院举办“百年初心·党史教育”青年理论宣讲大赛