通过简单的溶剂热法以及其后续热处理过程,制备了NiO纳米花和NiO/还原氧化石墨烯(rGO)复合物.在NiO/rGO复合物中,rGO作为基底生长NiO,与此同时,NiO则有效的避免了rGO的团聚.采用热重分析(TG)、场发射扫描电子显微镜(FE-SEM)和X射线衍射对样品的成分、形貌和结构进行了表征.NiO/rGO复合物(NiO和rGO的质量比为82.7∶17.3)电极呈现优异的电化学性能.在1 A/g时,初始比电容为514.9F/g,当材料完全活化后,其比电容高达600 F/g.同时,在电流密度为10 A/g时,相比于1 A/g时的比电容保持率为83.5％.此外,该电极材料具有非常优异的循环稳定性,6000次循环后电容衰减率为7.4％.表明所制备的复合物是一种有应用价值的超级电容器电极材料.
参考文献
| [1] | Gogotsi Y,Simon P.Materials for Electrochemical Capacitors[J].Nat Mater,2008,7:845-854. |
| [2] | Xing L L,Cui C X,Ma C H,et al.Facile Synthesis of α-MnO2/Graphene Nanocomposites and Their High Performance as Lithium-ion Battery Anode[J].Mater Lett,2011,65:2104-2106. |
| [3] | He G Y,Li J H,Chen H Q,et al.Hydrothermal Preparation of Co3O4@Graphene Nanocomposite for Supercapacitor with Enhanced Capacitive Performance[J].Mater Lett,2012,82:61-63. |
| [4] | Wang H W,Wang Y L,Wang X F.Pulsed Laser Deposition of the Porous Nickel Oxide Thin Film at Room Temperature for High-rate Pseudocapacitive Energy Storage[J].Electrochem Commun,2012,18:92-95. |
| [5] | Lang J W,Kong L B,Wu W J,et al.Facile Approach to Prepare Loose-packed NiO Nano-flakes Materials for Supercapacitors[J].Chem Commun,2008,35:4213-4215. |
| [6] | Cao X H,Shi Y M,Shi W H,et al.Preparation of Novel 3D Graphene Networks for Supercapacitor Applications[J].Small,2011,7:3163-3168. |
| [7] | Qiu Y J,Yu J,Zhou X S,et al.Synthesis of Porous NiO and ZnO Submicro-and Nanofibers from Electrospun Polymer Fiber Templates[J].Nanoscale Res Lett,2009,4:173-177. |
| [8] | Yuan C Z,Zhang X G,Su L H,et al.Facile Synthesis and Self-assembly of Hierarchical Porous NiO Nano/micro Spherical Superstructures for High Performance Supercapacitors[J].J Mater Chem,2009,19:5772-5777. |
| [9] | Tian L L,Zhuang Q C,Li J,et al.The Production of Self-Assembled Fe203-Graphene Hybrid Materials by a Hydrothermal Process for Improved Li-cycling[J].Electrochim Acta,2012,65:153-158. |
| [10] | Zhu X J,Dai H L,Hu J,et al.Reduced Graphene Oxide-Nickel Oxide Composite as High Performance Electrode Materials for Supercapacitors[J].J Power Sources,2012,203:243-249. |
| [11] | Bu Y F,Wang S,Jin H L,et al.Synthesis of Porous NiO/Reduced Graphene Oxide Composites for Supercapacitors[J].J Electrochem Soc,2012,159:A990-A994. |
| [12] | Zhao B,Song J S,Liu P,et al.Monolayer Graphene/NiO Nanosheets with Two-Dimension Structure for Supercapacitors[J].J Mater Chem,2011,21:18792-18798. |
| [13] | Ge C Y,Hou Z H,He B H,et al.Three-Dimensional Flower-like Nickel Oxide Supported on Graphene Sheets as Electrode Material for Supercapacitors[J].J Sol-Gel Sci Technol,2012,63:146-152. |
| [14] | Yang Y Y,Hu Z A,Zhang Z Y,et al.Reduced Graphene Oxide-Nickel Oxide Composites with High Electrochemical Capacitive Performance[J].Mater Chem Phys,2012,133:363-368. |
| [15] | Su X H,Chai H,Jia D Z,et al.Effective Microwave-Assisted Synthesis of Graphene Nanosheets/NiO Composite for High-Performance Supercapacitors[J].New J Chem,2013,37:439-443. |
| [16] | Xia X H,Tu J P,Mai Y J,et al.Graphene Sheet/Porous NiO Hybrid Film for Supercapacitor Applications[J].Chem Eur J,2011,17:10898-10905. |
| [17] | Jiang Y,Chen D D,Song J S,et al.A Facile Hydrothermal Synthesis of Graphene Porous NiO Nanocomposite and Its Application in Electrochemical Capacitors[J].Electrochim Acta,2013,91:173-178. |
| [18] | Paredes J I,Villar-Rodil S,Martínez-Alonso A,et al.Graphene Oxide Dispersions in Organic Solvents[J].Langmuir,2008,24:10560-10564. |
| [19] | Nethravathi C,Rajamathi M.Delamination,Colloidal Dispersion and Reaseembly of Alkylamine Intercalated Graphite Oxide in Alcohols[J].Carbon,2006,44:2635-2641. |
| [20] | Niyogi S,Bekyarova E,Itkis M E,et al.Solution Properties of Graphite and Graphene[J].J Am Chem Soc,2006,128:7720-7721. |
| [21] | Xu C,Wu X,Zhu J,et al.Synthesis of Amphiphilic Graphite Oxide[J].Carbon,2008,46:386-389. |
| [22] | Hummers W S,Offeman R E.Preparation of Graphitic Oxide[J].JAm Chem Soc,1958,80:1339. |
| [23] | LU Huaquan,WU Feng,SU Yuefeng,etal.Electrochemical Performance of LiNi0.5 Mn0.5 O2 as Cathode Material for Lithium-Ion Batteries Prepared by Oxalate Co-Precipitation Method[J].Acta Phys-Chim Sin,2010,26 (1):51-56 (in Chinese).卢华权,吴锋,苏岳锋,等.草酸盐共沉淀法制备锂离子电池正极材料LiNi0.5 Mn0.5O2及其电化学性能[J].物理化学学报,2010,26(1):51-56. |
| [24] | Zou Y Q,Wang Y.NiO Nanosheets Grown on Graphene Nanosheets as Superior Anode Materials for Li-ion Batteries[J].Nanoscale,2011,3:2615-26 20. |
| [25] | Cai D Y,Song M.Preparation of Fully Exfoliated Graphite Oxide Nanoplatelets in Organic Solvents[J].J Mater Chem,2007,17:3678-3680. |
| [26] | Meher S K,Justin P,Rao G R.Pine-Cone Morphology and Pseudocapacitive Behavior of Nanoporous Nickel Oxide[J].Electroc him Acta,2010,55:8388-8396. |
| [27] | Chen Y L,Hu Z A,Chang Y Q,et al.Zinc Oxide/Reduced Graphene Oxide Composites and Electrochemical Capacitance Enhanced by Homogeneous Incorporation of Reduced Graphene Oxide Sheets in Zinc Oxide Matrix[J].J Phys Chem C,2011,115:2563-2571. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%