Ti_3C_2/MnO_2复合物的制备及电化学储能性能研究
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摘要
Ti_3AlC_2材料经HF刻蚀、小分子物质插层、超声剥离得到Ti_3C_2纳米片,随后通过还原沉积制备了Ti_3C_2/MnO_2复合材料。XRD、SEM等表明二甲亚砜和表面活性剂分子共同插层可增加Ti_3C_2纳米片的层间距,这有利于提高材料的活性面积,同时MnO_2纳米颗粒可均匀负载于Ti_3C_2纳米片表面。电化学测试显示Ti_3C_2/MnO_2复合材料的比电容高达160 F/g,并且具有良好的循环稳定性。经过2000次循环后,其比电容保持在100 F/g,远高于单纯Ti_3C_2纳米片的比电容。
Ti_3C_2 nanoplates are firstly prepared through HF etching,small molecule intercalation and ultrasonic exfoliation.Then Ti_3C_2/MnO_2 composite is successfully obtained by reducing deposition of MnO_2XRD and SEM characterizations show that the co-intercalation of dimethyl sulfoxide and surfactant can increase the interlayer spacing of Ti_3C_2 nanoplates,and improve the active area of the materials Additionally,MnO_2 nanoparticles can be uniformly loaded on the surface of Ti_3C_2 nanoplates.The electrochemical tests show that the specific capacitance of Ti_3C_2/MnO_2 composite is up to 160 F/g,and i demonstrates a good cycle stability.After 2000 cycles,a specific capacitance of 100 F/g is retained for Ti_3C_2/MnO_2,which is much higher than that of pure Ti_3C_2 nanoplates.
Ti_3C_2 nanoplates are firstly prepared through HF etching,small molecule intercalation and ultrasonic exfoliation.Then Ti_3C_2/MnO_2 composite is successfully obtained by reducing deposition of MnO_2XRD and SEM characterizations show that the co-intercalation of dimethyl sulfoxide and surfactant can increase the interlayer spacing of Ti_3C_2 nanoplates,and improve the active area of the materials Additionally,MnO_2 nanoparticles can be uniformly loaded on the surface of Ti_3C_2 nanoplates.The electrochemical tests show that the specific capacitance of Ti_3C_2/MnO_2 composite is up to 160 F/g,and i demonstrates a good cycle stability.After 2000 cycles,a specific capacitance of 100 F/g is retained for Ti_3C_2/MnO_2,which is much higher than that of pure Ti_3C_2 nanoplates.
引文
[1]谢丹艳,张燕,陈江,等.二维过渡金属碳化物或碳氮化物在储能领域的应用进展[J].化工新型材料2017(10):23-25.
[2]Naguib M,Presser V,Tallman D,et al.On the topotactic transformation of Ti2AlC into a Ti-C-O-Fcubic phase by heating in molten lithium fluoride in air[J].J Am Ceram Soc,2011,94(12):4556-4561.
[3]Naguib M,Kurtoglu M,Gogotsi Y,et al.Two-dimensional nanocrystals produced by exfoliation of Ti3AlC2[J].Adv Mater,2011,23(37):4248-4253.
[4]Lukatskaya M.R,Mashtalir O,Gogotsi Y,et al.Cation intercalation and high volumetric capacitance of two-dimensional titanium carbide[J].Science,2013,341(6153):1502-1505.
[5]吴荣,陈超,杨修春.新型超级电容器电极材料[J]陶瓷学报,2018,39(6):649-660.
[6]孙贺雷,李云飞,易荣华等.N、B共掺杂MXene复合材料的制备及其电化学性能研究[J].储能科学与技术,2019(1):30-37.
[7]Fu Q,Wang X,Zhang N,et al.Self-assembled Ti3C2Tx/SCNT composite electrode with improved electrochemical performance for supercapacitor r[J].JColloid Interf Sci,2017,511:128-134.
[8]Zhao M Q,Ren C E,Ling Z,et al.Flexible MXene/carbon nanotube composite paper with high volumetric capacitance[J].Adv Mater,2015,27(2):339-345.
[9]Hu M,Li Z,Zhang H,et al.Self-assembled Ti3C2Tx MXene film with high gravimetric capacitance[J].Chem Commun,2015,51(70):13531-13533.
[10]黄文欣,李军,徐云鹤.二氧化锰基超级电容器的研究进展[J].材料导报,2018,32(8):2555-2564.
[11]耿欣,温广武,杨思宇,等.MXene(Ti3C2)的制备及其吸波性能[J].硅酸盐学报,2018,46(3):315-321.
[12]Lin S Y,Zhang X.Two-dimensional titanium carbide electrode with large mass loading for supercapacitor[J].J Power Sources,2015,294:354-359.
[13]Yu Z N,Li C,Abbitt D,et al.Flexible sandwich-like Ag-nanowire/PEDOT:PSS-panopillar/MnO2 high performance supercapacitors[J].J Mater Chem A,2014,2:10923-10929.
[14]Xiao Y,Fan Z J,Wei F.Compressible aligned carbon nanotube/MnO2 as high-rate electrode materials for supercapacitors.J Electroanal Chem,2012,684:32-37.
[2]Naguib M,Presser V,Tallman D,et al.On the topotactic transformation of Ti2AlC into a Ti-C-O-Fcubic phase by heating in molten lithium fluoride in air[J].J Am Ceram Soc,2011,94(12):4556-4561.
[3]Naguib M,Kurtoglu M,Gogotsi Y,et al.Two-dimensional nanocrystals produced by exfoliation of Ti3AlC2[J].Adv Mater,2011,23(37):4248-4253.
[4]Lukatskaya M.R,Mashtalir O,Gogotsi Y,et al.Cation intercalation and high volumetric capacitance of two-dimensional titanium carbide[J].Science,2013,341(6153):1502-1505.
[5]吴荣,陈超,杨修春.新型超级电容器电极材料[J]陶瓷学报,2018,39(6):649-660.
[6]孙贺雷,李云飞,易荣华等.N、B共掺杂MXene复合材料的制备及其电化学性能研究[J].储能科学与技术,2019(1):30-37.
[7]Fu Q,Wang X,Zhang N,et al.Self-assembled Ti3C2Tx/SCNT composite electrode with improved electrochemical performance for supercapacitor r[J].JColloid Interf Sci,2017,511:128-134.
[8]Zhao M Q,Ren C E,Ling Z,et al.Flexible MXene/carbon nanotube composite paper with high volumetric capacitance[J].Adv Mater,2015,27(2):339-345.
[9]Hu M,Li Z,Zhang H,et al.Self-assembled Ti3C2Tx MXene film with high gravimetric capacitance[J].Chem Commun,2015,51(70):13531-13533.
[10]黄文欣,李军,徐云鹤.二氧化锰基超级电容器的研究进展[J].材料导报,2018,32(8):2555-2564.
[11]耿欣,温广武,杨思宇,等.MXene(Ti3C2)的制备及其吸波性能[J].硅酸盐学报,2018,46(3):315-321.
[12]Lin S Y,Zhang X.Two-dimensional titanium carbide electrode with large mass loading for supercapacitor[J].J Power Sources,2015,294:354-359.
[13]Yu Z N,Li C,Abbitt D,et al.Flexible sandwich-like Ag-nanowire/PEDOT:PSS-panopillar/MnO2 high performance supercapacitors[J].J Mater Chem A,2014,2:10923-10929.
[14]Xiao Y,Fan Z J,Wei F.Compressible aligned carbon nanotube/MnO2 as high-rate electrode materials for supercapacitors.J Electroanal Chem,2012,684:32-37.