V_2O_5·nH_2O nanosheets and multi-walled carbon nanotube composite as a negative electrode for sodium-ion batteries
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摘要
Two dimensional(2D) transition metal oxides and chalcogenides demonstrate a promising performance in sodium-ion batteries(SIBs) application. In this study, we investigated the use of a composite of freeze dried V_2O_5·nH_2O nanosheets and multi-walled carbon nanotube(MWCNT) as a negative electrode material for SIBs. Cyclic voltammetry(CV) results indicated that a reversible sodium-ion insertion/deinsertion into the composite electrode can be obtained in the potential window of 0.1–2.5 V vs. Na~+/Na. The composite electrodes delivered sodium storage capacities of 140 and 45 m Ah g~(-1) under applied current densities of 20 and 100 m A g~(-1), respectively. The pause test during constant current measurement showed a raise in the open circuit potential(OCP) of about 0.46 V, and a charge capacity loss of ～10%. These values are comparable with those reported for hard carbon electrodes. For comparison, electrodes of freeze dried V_2O_5·nH_2O nanosheets were prepared and tested for SIBs application. The results showed that the MWCNT plays a significant role in the electrochemical performance of the composite material.
Two dimensional(2D) transition metal oxides and chalcogenides demonstrate a promising performance in sodium-ion batteries(SIBs) application. In this study, we investigated the use of a composite of freeze dried V_2O_5·nH_2O nanosheets and multi-walled carbon nanotube(MWCNT) as a negative electrode material for SIBs. Cyclic voltammetry(CV) results indicated that a reversible sodium-ion insertion/deinsertion into the composite electrode can be obtained in the potential window of 0.1–2.5 V vs. Na~+/Na. The composite electrodes delivered sodium storage capacities of 140 and 45 m Ah g~(-1) under applied current densities of 20 and 100 m A g~(-1), respectively. The pause test during constant current measurement showed a raise in the open circuit potential(OCP) of about 0.46 V, and a charge capacity loss of ～10%. These values are comparable with those reported for hard carbon electrodes. For comparison, electrodes of freeze dried V_2O_5·nH_2O nanosheets were prepared and tested for SIBs application. The results showed that the MWCNT plays a significant role in the electrochemical performance of the composite material.
Two dimensional(2D) transition metal oxides and chalcogenides demonstrate a promising performance in sodium-ion batteries(SIBs) application. In this study, we investigated the use of a composite of freeze dried V_2O_5·nH_2O nanosheets and multi-walled carbon nanotube(MWCNT) as a negative electrode material for SIBs. Cyclic voltammetry(CV) results indicated that a reversible sodium-ion insertion/deinsertion into the composite electrode can be obtained in the potential window of 0.1–2.5 V vs. Na~+/Na. The composite electrodes delivered sodium storage capacities of 140 and 45 m Ah g~(-1) under applied current densities of 20 and 100 m A g~(-1), respectively. The pause test during constant current measurement showed a raise in the open circuit potential(OCP) of about 0.46 V, and a charge capacity loss of ～10%. These values are comparable with those reported for hard carbon electrodes. For comparison, electrodes of freeze dried V_2O_5·nH_2O nanosheets were prepared and tested for SIBs application. The results showed that the MWCNT plays a significant role in the electrochemical performance of the composite material.
引文
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[3]M.á.Mu?oz-Márquez,D.Saurel,J.L.Gómez-Cámer,M.Casas-Cabanas,E.Castillo-Martínez,T.Rojo,Adv.Energy Mater.7(2017)1-31.
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[5]R.Mogensen,J.Maibach,W.R.Brant,D.Brandell,R.Younesi,Electrochim.Acta245(2017)696-704.
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[8]R.Mogensen,D.Brandell,R.Younesi,ACS Energy Lett.1(2016)1173-1178.
[9]A.Moretti,M.Secchiaroli,D.Buchholz,G.Giuli,R.Marassi,S.Passerini,J.Electrochem.Soc.162(2015)A2723-A2728.
[10]D.Liu,Y.Liu,B.B.Garcia,Q.Zhang,A.Pan,Y.-H.Jeong,G.Cao,J.Mater.Chem.19(2009)8789-8795.
[11]Q.Wei,Z.Jiang,S.Tan,Q.Li,L.Huang,M.Yan,L.Zhou,Q.An,L.Mai,ACS Appl.Mater.Interfaces 7(2015)18211-18217.
[12]X.Rui,J.Zhu,W.Liu,H.Tan,D.Sim,C.Xu,H.Zhang,J.Ma,H.H.Hng,T.M.Lim,Q.Yan,RSC Adv.1(2011)117-122.
[13]D.Su,G.Wang,ACS Nano 7(2013)11218-11226.
[14]X.Rui,Z.Lu,Z.Yin,D.H.Sim,N.Xiao,T.M.Lim,H.H.Hng,H.Zhang,Q.Yan,Small 9(2013)716-721.
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[18]M.Clites,B.W.Byles,E.Pomerantseva,Adv.Mater.Lett.8(2017)679-688.
[19]Q.Wei,J.Liu,W.Feng,J.Sheng,X.Tian,L.He,Q.An,L.Mai,J.Mater.Chem.A3(2015)8070-8075.
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[21]Z.Chen,V.Augustyn,X.Jia,Q.Xiao,B.Dunn,Y.Lu,ACS Nano 6(2012)4319-4327.
[22]M.Clites,B.Byles,E.Pomerantseva,J.Mater.Chem.A 4(2016)7754-7761.
[23]J.Livage,Chem.Mater.3(1991)578-593.
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[26]G.Sudant,E.Baudrin,B.Dunn,J.-M.Tarascon,J.Electrochem.Soc.151(2004)A666-A671.
[27]V.Petkov,P.N.Trikalitis,E.S.Bozin,S.J.L.Billinge,T.Vogt,M.G.Kanatzidis,J.Am.Chem.Soc.124(2002)10157-10162.
[28]S.Beke,Thin Solid Films 519(2011)1761-1771.
[29]J.Cheng,G.Gu,Q.Guan,J.M.Razal,Z.Wang,X.Li,B.Wang,J.Mater.Chem.A4(2016)2729-2737.
[30]D.Kong,X.Li,Y.Zhang,X.Hai,B.Wang,X.Qiu,Q.Song,Q.-H.Yang,L.Zhi,Energy Environ.Sci.9(2016)906-911.
[31]A.Moretti,S.Jeong,S.Passerini,ChemElectroChem 3(2016)1048-1053.
[32]C.Bommier,D.Leonard,Z.Jian,W.F.Stickle,P.A.Greaney,X.Ji,Adv.Mater.Interfaces 3(2016)1600449.
[33]J.Maibach,F.Jeschull,D.Brandell,K.Edstr?m,M.Valvo,ACS Appl.Mater.Interfaces 9(2017)12373-12381.