以苯酚、甲醛为原料,利用水热合成法制备酚醛泡沫前驱体,经炭化和KOH活化后制备具有高比表面积的多孔炭PAFc。采用X射线衍射、扫描电镜和N2吸附-脱附等方法对多孔炭进行表征。结果表明:当炭化温度为800℃、活化比例为1∶2时制备的多孔炭含有丰富的孔结构和高比表面积(1692.24m2/g)。此外,多孔炭也表现出优异的电化学性能,电流密度为1A/g时多孔炭的比电容达255.6F/g,循环5000次后,电容保持率为97.3%。
Phenolic foam precursors were prepared by hydrothermal synthesis using phenol and formaldehyde as raw materials,and porous carbon PAFc with high specific surface area was prepared after charring and KOH activation.The porous carbon was characterized by XRD,SEM and N2 adsorption-desorption methods.The results showed that the porous carbon prepared at a charring temperature of 800℃ and an activation ratio of 1∶2 contained a rich pore structure and a high specific surface area (1692.24m2/g).In addition,the porous carbon also exhibited excellent electrochemical properties,with a specific capacitance of 255.6F/g at a current density of 1A/g and a capacitance retention rate of 97.3% after 5000 cycles.
[1] Gidwani M,Bhagwani A,Rohra N.Supercapacitors:the near future of batteries[J].International Journal of Engineering Inventions,2014,4(5):22.
[2] Raza W,Ali F,Raza N,et al.Recent advancements in supercapacitor technology[J].Nano Energy,2018,52:441-473.
[3] Ma Q L,Yu Y F,Sindoro M,et al.Carbon-based functional materials derived from waste for water remediation and energy storage[J].Advanced Materials,2017,29(13):1605361.
[4] Zhang S,Tian K,Cheng B H,et al.Preparation of N-doped supercapacitor materials by integrated salt templating and silicon hard templating by pyrolysis of biomass wastes[J].ACS Sustainable Chemistry Engineering,2017,5(8):6682-6691.
[5] Chen F S,Liu X H,Zhang Z A,et al.Controllable fabrication of urchin-like Co3O4 hollow spheres for high-performance supercapacitors and lithium-ion batteries[J].Dalton Transactions,2016,45(38):15155-15161.
[6] Huang Y,Li H F,Wang Z F,et al.Nanostructured polypyrrole as a flexible electrode material of supercapacitor[J].Nano Energy,2016,22:422-438.
[7] Liu T Y,Zhang F,Song Y,et al.Revitalizing carbon supercapacitor electrodes with hierarchical porous structures[J].Journal of Materials Chemistry A,2017,5(34):17705-17733.
[8] Snook G A,Kao P,Best A S.Conducting-polymer-based supercapacitor devices and electrodes[J].Journal of Power Sources,2011,196(1):1-12.
[9] Li A H,Feng Z Y,Sun Y,et al.Porous organic polymer/RGO composite as high performance cathode for half and full sodium ion batteries[J].Journal of Power Sources,2017,343:424-430.
[10] Hu F Y,Wang J Y,Hu S,et al.Inherent N,O-containing carbon frameworks as electrode materials for high-performance supercapacitors[J].Nanoscale,2016,8(36):16323-16331.
[11] Vargheese S,Kumar R T R,Haldorai Y.Synthesis of triazine-based porous organic polymer:a new material for double layer capacitor[J].Materials Letters,2019,249:53-56.
[12] Zhao Y,Xie F Y,Jiang J X,et al.Porous carbons derived from pyrene-based conjugated microporous polymer for supercapacitors[J].Microporous Mesoporous Materials the Offical Journal of the International Zeolite Association,2017,240:73-79.
[13] Wongkaew N,Kirschbaum S E K,Surareungchai W,et al.A novel three-electrode system fabricated on polymethyl methacrylate for on-chip electrochemical detection[J].Electroanalysis,2012,24(10):1903-1908.
[14] Wang J,Xu Y L,Chen X,et al.Electrochemical supercapacitor electrode material based on poly(3,4-ethylenedioxythiophene)/polypyrrole composite[J].Journal of Power Sources,2007,163(2):1120-1125.
[15] Liu F,Liang W D,Wang C J,et al.Superhydrophilic and mechanically robust phenolic resin as double layered photothermal materials for efficient solar steam generation[J].Materials Today Energy,2020,16:100375.
[16] Liu H,Zhai D D,Wang M,et al.Design of urea-modified phenol-formaldehyde as well as the derived N-carbon nanosheets for supercapacitors with elevated rate capability and cycling stability[J].ChemElectroChem,2019,6(3):885-891.
[17] Chen X K,Yu W C,Ma L,et al.Mechanical properties and thermal characteristics of different-density phenolic foams[J].Journal of Thermal Analysis Calorimetry,2021,144(2):393-401.
[18] Yao L,Yang G Z,Han P,et al.Three-dimensional beehive-like hierarchical porous polyacrylonitrile-based carbons as a high performance supercapacitor electrodes[J].Journal of Power Sources,2016,315:209-217.
[19] Chee W K,Lim H N,Zainal Z,et al.Flexible graphene-based supercapacitors:a review[J].The Journal of Physical Chemistry C,2016,120(8):4153-4172.
[20] Yoon S H,Lim S,Song Y,et al.KOH activation of carbon nanofibers[J].Carbon,2004,42(8/9):1723-1729.
[21] Wang K,Zhao N,Lei S W,et al.Promising biomass-based activated carbons derived from willow catkins for high performance supercapacitors[J].Electrochimica Acta,2015,166:1-11.
[22] Bokobza L,Bruneel J L,Couzi M.Raman spectra of carbon-based materials (from graphite to carbon black) and of some silicone composites[J].C:Journal of Carbon Research,2015,1(1):77-94.
[23] Cheng Y L,Wu L L,Fang C Q,et al.Synthesis of porous carbon materials derived from laminaria japonica via simple carbonization and activation for supercapacitors[J].Journal of Materials Research Technology,2020,9(3):3261-3271.
[24] Yang C S,Jang Y S,Jeong H K.Bamboo-based activated carbon for supercapacitor applications[J].Current Applied Physics,2014,14(12):1616-1620.
[25] Kislov E A,Komarsky A A,Kuznetsov V L,et al.XPS studies on surfaces of field-emission cathodes of artificial carbon materials[J].Journal of Applied Spectroscopy,2013,80(2):210-214.
[26] Filik J,May P W,Pearce S R J,et al.XPS and laser Raman analysis of hydrogenated amorphous carbon films[J].Diamond Related Materials,2003,12(3):974-978.
[27] Li Q,Wu X Z,Zhao Y,et al.Nitrogen-doped hierarchical porous carbon through one-step activation of bean curd for high-performance supercapacitor electrode[J].ChemElectroChem,2018,5(12):1606-1614.
[28] Stefaniak W,Goworek J,Bilinski B.Pore size analysis by nitrogen adsorption and thermal desorption[J].Colloids Surfaces A Physicochemical Engineering Aspects,2003,214(1-3):231-237.
[29] Wang Q,Cao Q,Wang X Y,et al.A high-capacity carbon prepared from renewable chicken feather biopolymer for supercapacitor[J].Journal of Power Sources,2013,225:101-107.
[30] Ravikovitch P I,Neimark A V.Calculations of pore size distributions in nanoporous materials from adsorption and desorption isotherms[J].Studies in Surface Science Catalysis,2000,129:597-606.
[31] Yin J,Zhang D Y,Zhao J Q,et al.Meso-and micro-porous composite carbons derived from humic acid for supercapacitors[J].Electrochimica Acta,2014,136:504-512.
[32] Hu Z,Srinivasan M P,Ni Y.Preparation of mesoporous high-surface-area activated carbon[J].Advanced Materials,2000,12(1):62-65.
[33] Artem'Yanov A P,Sheveleva I V.Electrochemical properties of fibrous and granulated carbon materials[J].Russian Journal of Applied Chemistry,2004,77(11):1793-1796.
[34] Muto A,Itano K,Wada S,et al.Preparation and capacitive performance of mesoporous carbon with short time CO2 activation[J].Electrochemistry,2014,82(12):1067-1071.
[35] Wu K,Liu Q M.Nitrogen-doped mesoporous carbons for high performance supercapacitors[J].Applied Surface Science,2016,379:132-139.
[36] Pandolfo A G,Hollenkamp A F.Carbon properties and their role in supercapacitors[J].Journal of Power Sources,2006,157(1):11-27.
基金资助
国家自然科学基金(21364004)
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