Hierarchical self-assembly of ultrathin nickel hydroxide nanoflakes for high-performance supercapacitors

Uniform Ni(OH)2 hierarchical nanostructures, assembled from ultrathin nanoflakes with thickness of only ∼7.4 nm, are designed and investigated as electrochemical pseudo-capacitor materials for potential energy storage applications. The ultrathin nanostructures exhibit a highest specific capacitance of 1715 F g−1 at a scan rate of 5 mV s−1 within the potential range of 0.6 V with high rate capability and good cycling stability. The high specific capacitance and remarkable rate capability are promising for supercapacitor applications. To understand the effect of the microstructure on the properties, we also synthesized uniformly stacked Ni(OH)2 nanoplatelets (thickness of ∼22 nm) and randomly arranged hexagonal nanosheets (thickness of ∼140 nm). Both of the latter configurations exhibited good performance despite showing inferior properties compared to the uniform ultrathin Ni(OH)2 nanostructures. These results suggest the importance of rational design and synthesis of ultrathin nanomaterials for high-performance energy applications.

[1]  Hao Jiang,et al.  Ultrafine manganese dioxide nanowire network for high-performance supercapacitors. , 2011, Chemical communications.

[2]  Wanlin Guo,et al.  "White graphenes": boron nitride nanoribbons via boron nitride nanotube unwrapping. , 2010, Nano letters.

[3]  H. Gong,et al.  Capacitance decay of nanoporous nickel hydroxide , 2010 .

[4]  Jingzhou Yin,et al.  Controlled fabrication and property studies of nickel hydroxide and nickel oxide nanostructures , 2010 .

[5]  Jiaqiang Xu,et al.  Synthesis and chlorine sensing properties of nanocrystalline hierarchical porous SnO2 by a phenol formaldehyde resin-assisted process , 2010 .

[6]  G. Graff,et al.  Ternary self-assembly of ordered metal oxide-graphene nanocomposites for electrochemical energy storage. , 2010, ACS nano.

[7]  Chang Liu,et al.  Advanced Materials for Energy Storage , 2010, Advanced materials.

[8]  John Wang,et al.  Ordered mesoporous alpha-MoO3 with iso-oriented nanocrystalline walls for thin-film pseudocapacitors. , 2010, Nature materials.

[9]  Mingyuan Ge,et al.  Large-scale synthesis of SnO2 nanosheets with high lithium storage capacity. , 2010, Journal of the American Chemical Society.

[10]  J. Fei,et al.  Controlled fabrication of polyaniline spherical and cubic shells with hierarchical nanostructures. , 2009, ACS nano.

[11]  Yong‐Sheng Hu,et al.  Ordered mesoporous metallic MoO2 materials with highly reversible lithium storage capacity. , 2009, Nano letters.

[12]  Xiaogang Zhang,et al.  Facile synthesis and self-assembly of hierarchical porous NiO nano/micro spherical superstructures for high performance supercapacitors , 2009 .

[13]  Yuanyuan Xie,et al.  Synthesis and electrochemical characterization of mesoporous CoxNi1−x layered double hydroxides as electrode materials for supercapacitors , 2009 .

[14]  C. Lokhande,et al.  Characterization of honeycomb-like "β-Ni(OH) 2 " thin films synthesized by chemical bath deposition method and their supercapacitor application , 2009 .

[15]  L. Kong,et al.  A facile approach to the preparation of loose-packed Ni(OH)2 nanoflake materials for electrochemical capacitors , 2009 .

[16]  Guangwu Yang,et al.  Electrodeposited nickel hydroxide on nickel foam with ultrahigh capacitance. , 2008, Chemical communications.

[17]  S. Dou,et al.  Electrochemical Deposition of Porous Co ( OH ) 2 Nanoflake Films on Stainless Steel Mesh for Flexible Supercapacitors , 2008 .

[18]  Y. Gogotsi,et al.  Materials for electrochemical capacitors. , 2008, Nature materials.

[19]  S. Ida,et al.  Synthesis of hexagonal nickel hydroxide nanosheets by exfoliation of layered nickel hydroxide intercalated with dodecyl sulfate ions. , 2008, Journal of the American Chemical Society.

[20]  Zhennan Gu,et al.  Growth of manganese oxide nanoflowers on vertically-aligned carbon nanotube arrays for high-rate electrochemical capacitive energy storage. , 2008, Nano letters.

[21]  L. Kong,et al.  Facile approach to prepare loose-packed NiO nano-flakes materials for supercapacitors. , 2008, Chemical communications.

[22]  Hongzheng Chen,et al.  Large-Scale and Shape-Controlled Syntheses of Three-Dimensional CdS Nanocrystals with Flowerlike Structure , 2008 .

[23]  S. Suib,et al.  3D Flowerlike α-Nickel Hydroxide with Enhanced Electrochemical Activity Synthesized by Microwave-Assisted Hydrothermal Method , 2008 .

[24]  G. Campet,et al.  Hydrothermal Synthesis and Pseudocapacitance Properties of α-MnO2 Hollow Spheres and Hollow Urchins , 2007 .

[25]  Ying-Jie Zhu,et al.  Hierarchical β-Ni(OH)2 and NiO Carnations Assembled from Nanosheet Building Blocks , 2007 .

[26]  John Wang,et al.  Pseudocapacitive Contributions to Electrochemical Energy Storage in TiO2 (Anatase) Nanoparticles , 2007 .

[27]  Hu-lin Li,et al.  Effects of deposition potential and anneal temperature on the hexagonal nanoporous nickel hydroxide films , 2007 .

[28]  Peidong Yang,et al.  Solution-grown zinc oxide nanowires. , 2006, Inorganic chemistry.

[29]  Huigang Zhang,et al.  Fabrication of beta-Ni(OH)2 and NiO hollow spheres by a facile template-free process. , 2005, Chemical communications.

[30]  H. Zeng,et al.  Composition/structural evolution and optical properties of ZnO/Zn nanoparticles by laser ablation in liquid media. , 2005, The journal of physical chemistry. B.

[31]  Weiyang Li,et al.  Synthesis, characterization, and electrochemical application of Ca(OH)2-, Co(OH)2-, and Y(OH)3-Coated Ni(OH)2 tubes. , 2005, The journal of physical chemistry. B.

[32]  K. Ariga,et al.  Benzylation of benzene and other aromatics by benzyl chloride over mesoporous AlSBA-15 catalysts , 2005 .

[33]  P. Bruce,et al.  Nanostructured materials for advanced energy conversion and storage devices , 2005, Nature materials.

[34]  Xiaomin Li,et al.  Flowerlike ZnO nanostructures via hexamethylenetetramine-assisted thermolysis of zinc-ethylenediamine complex. , 2005, The journal of physical chemistry. B.

[35]  Feng Xu,et al.  Preparation of the Novel Nanocomposite Co(OH)2/ Ultra‐Stable Y Zeolite and Its Application as a Supercapacitor with High Energy Density , 2004 .

[36]  M. Winter,et al.  What are batteries, fuel cells, and supercapacitors? , 2004, Chemical reviews.

[37]  M. Hirscher.  Nanoscale Materials for Energy Storage , 2004 .

[38]  D. Noréus,et al.  Alpha Nickel Hydroxides as Lightweight Nickel Electrode Materials for Alkaline Rechargeable Cells , 2003 .

[39]  M. Rajamathi,et al.  On the relationship between α-nickel hydroxide and the basic salts of nickel , 1998 .