将聚吡咙和不同浓度聚酰亚胺前驱体的溶液混合,采用静电纺丝和高温碳化技术,通过表面形貌观察、结构表征和电化学测试对柔性纤维膜进行分析。结果表明,由于聚吡咙与聚酰亚胺二者结构相似,具有良好的相容性;纳米纤维膜经过氮气气氛亚胺化、碳化后表现出优异的柔韧性,可直接作为锂电自支撑负极材料。当聚吡咙与9%(wt,质量分数)聚酰亚胺的质量比为85∶15,电流密度为50mA/g时,经100圈循环后,仍有378.7mAh/g的放电比容量。
In order to prepare flexible self-supporting lithium battery anode carbon nanofiber films,solutions of polypyrrolones and polyimide precursors with different concentrations were mixed,and the flexible fiber films were analyzed by surface morphology observation,structural characterization,and electrochemical testing using electrospinning and high-temperature carbonization techniques.The results showed that due to the structural similarity between polypyrrolone and polyimide,they had good compatibility.The nanofiber films exhibited excellent flexibility after imidization and carbonization in nitrogen atmosphere,and could be directly used as lithium self-supporting anode material.When the mass ratio of polypyrrolone to 9wt% polyimide was 85∶15 and the current density was 50mA/g,the discharge specific capacity of 378.7mAh/g was still available after 100 cycles.
[1] Qutaish H,et al.Porous carbon architectures with different dimensionalities for lithium metal storage[J].Science and Technology of Advanced Materials,2022,23(1):169-188.
[2] Ruiz-Cornejo J C,Sebastian D,Lazaro M J.Synthesis and applications of carbon nanofibers:a review[J].Reviews In Chemical Engineering,2020,36(4):493-511.
[3] Zussman E,Chen X,Ding W,et al.Mechanical and structural characterization of electrospun PAN-derived carbon nanofibers[J].Carbon,2005,43(10):2175-2185.
[4] Li X Q,Chang L,Zhao S L,et al.Research on carbon-based electrode materials for supercapacitors[J].Acta Physico-Chimica Sinica,2017,33(1):130-148.
[5] Poonam,Sharma K,Arora A,et al.Review of supercapacitors:materials and devices[J].Journal of Energy Storage,2019,21(FEB):801-825.
[6] Hen H C,Li M,Li C,et al.Electrospun carbon nanofibers for lithium metal anodes:progress and perspectives[J].Chinese Chemical Letters,2021,33(1):141-152.
[7] Ilango P R,Peng S.Electrospinning techniques for Li,Na and K-ion batteries-ScienceDirect[J].Current Opinion in Electrochemistry,2019,18:106-112.
[8] Duan,Meng Mingtao,Zhang Yanshuang,et al.Facile synthesis of graphene-like carbon-coated Ni3S2 nanoparticles self-assembled on 3D dendritic nanostructure as high-performance anode materials of sodium-ion batteries[J].Ionics,2020,26(9):4511-4522.
[9] 王天宇,张兴祥.丙烯腈与马来酸二甲酯共聚物的合成与表征[J].天津工业大学学报,2014(4):11-15.
[10] 王阳阳.锌硼磷酸铵盐阻燃抑烟木粉/聚氯乙烯复合材料的研究[D].哈尔滨:东北林业大学,2018.
[11] 王晓琳,彭宁,张文晶,等.静电纺丝法制备聚吡咙纳米纤维[J].科技创新导报,2009(22):5-6.
[12] 曾悦.柔性,多孔聚吡咙基碳纳米纤维膜的制备及其储电性能研究[D].南昌:江西师范大学.
[13] Zhu J,Ding Y,Agarwal S,et al.Nanofibre preparation of non-processable polymers by solid-state polymerization of molecularly self-assembled monomers[J].Nanoscale,2017,10-1039.9(46):18169-18174.
[14] Roberts M F,Jenekhe S A.Lewis acid coordination complexes of polymers:3.poly(benzobisimidazobenzophenanthroline) ladder and semiladder polymers[J].Polymer,1994,35(20):4313-4325.
[15] Jenekhe S A,Johnson P O.Complexation-mediated solubilization and processing of rigid-chain and ladder polymers in aprotic organic solvents[J].Macromolecules,1990,23(20):315-323.
[16] 杜强,张一鸣,田爽,等.锂离子电池SEI膜形成机理及化成工艺影响[J].电源技术,2018,42(12):5.
[17] Cheng F,Tao Z,Liang J,et al.Template-directed materials for rechargeable lithium-ion batteries[J].Chemistry of Materials:A Publication of the American Chemistry Society,2008(3):20:667-681.
[18] Hu Y S,Adelhelm P,Smarsly B,et al.Synthesis of hierarchically porous carbon monoliths with highly ordered microstructure and their application in rechargeable lithium batteries with high-rate capability[J].Advanced Functional Materials,2010,17(12):1873-1878.
基金资助
国家自然科学基金面上项目(51763022);2020年天山青年计划“基于柔性储能电池的纺织界面设计与载流子传输机理”(2020Q003);2021年自治区研究生科研创新项目(XJ2021G074)
PDF
