logo

Ni(OH)2 nanoflakes supported on 3D hierarchically nanoporous gold/Ni foam as superior electrodes for supercapacitors

More info
  • ReceivedAug 8, 2017
  • AcceptedOct 17, 2017
  • PublishedDec 12, 2017

Abstract

The increasing demand for portable electronic devices and hybrid electric vehicles stimulates the development of supercapacitors as an advanced energy storage system. Here, we demonstrate a binder-free nickel hydroxide@nanoporous gold/Ni foam (Ni(OH)2@NPG/Ni foam) electrode for high-performance supercapacitors, which is prepared by a facile three-step fabrication route including electrodeposition of Au-Sn alloy on Ni foam, chemical dealloying of Sn and electrodepostion of Ni(OH)2 on NPG/Ni foam. Such Ni(OH)2@NPG/Ni foam electrode is composed of a thin layer of conformable Ni(OH)2 nanoflakes supported on three-dimensional (3D) hierarchically porous NPG/Ni foam substrate. The resulting Ni(OH)2@NPG/Ni foam electrode can offer highways for both electron transfer and ion transport and lead to an excellent electrochemical performance with an ultrahigh specific capacitance of 3,380 F g–1 at a current density of 2 A g–1. Even when the current density was increased to 50 A g–1, it still retained a high capacitance of 1,927 F g–1. The promising performance of the Ni(OH)2@NPG/Ni foam electrode is mainly ascribed to the 3D hierarchical porosity and the highly conductive network on the NPG/Ni foam composite current collector, as well as the conformal electrodeposition of Ni(OH)2 active material on the NPG/Ni foam, which induces the formation of interconnected porosity both on the top surface and on the inner surface of the electrode. This inspiring electrochemical performance would make the as-designed electrode material become one of the most promising candidates for future electrochemical energy storage systems.


Acknowledgment

This work was financially supported by the National Natural Science Foundation of China (21673051, 51604086), the Guangdong Science and Technology Department (2016A010104015), the Pearl River Scholar Funded Scheme of Guangdong Province Universities and Colleges (2015), the Science and Technology Program of Guangzhou (201604030037), the ‘One-hundred Talents plan’ (220418056), the ‘One-hundred Young Talents plan’ (220413126) and the Youth Foundation (252151038) of Guangdong University of Technology.


Interest statement

The authors declare that they have no conflict of interest.


Contributions statement

Ke X, Shi Z and Guo Z designed the experiments; Zhang Z, Cheng Y, Liang Y and Tan Z performed the experiments with support from Liu L and Liu J; Ke X, Shi Z and Guo Z wrote the paper. All authors contributed to the general discussion.


Author information

Xi Ke received his PhD degree in analytical chemistry from Changchun Institute of Applied Chemistry (CIAC), Chinese Academy of Sciences in 2013. He worked as a postdoctoral fellow in Sun Yat-sen University from 2013 to 2015. He joined Guangdong University of Technology as an assistant professor in 2015. His research interests include the synthesis of electrode materials and their application in supercapacitor, lithium metal battery (LMB) and sodium-ion battery (SIB).


Zhicong Shi is a professor at Guangdong University of Technology, where he presently serves as the Head of the Department of New Energy Materials and Devices and the Director of Guangdong Engineering Centre for New Energy Materials and Devices. He received his PhD in physical chemistry from Xiamen University in 2005. His current research field is novel electrode materials for supercapacitors, batteries and fuel cells.


Zaiping Guo received her PhD in Materials Engineering from the University of Wollongong in December 2003. After APD fellowship in the Institute for Superconducting & Electronic Materials, she joined the Faculty of Engineering and Information Sciences, University of Wollongong as a Lecturer in 2008, and was promoted to Professor in 2012, and then Senior Professor in 2013. Her current research interests focus on the design and application of nanomaterials for energy storage and conversion, including rechargeable batteries, hydrogen storage, and fuel cells.


Supplement

Supplementary information

Supplementary figures are available in the online version of the paper.


References

[1] Winter M, Brodd RJ. What are batteries, fuel cells, and supercapacitors?. Chem Rev, 2004, 104: 4245-4270 CrossRef Google Scholar

[2] Wu S, Zhu Y. Highly densified carbon electrode materials towards practical supercapacitor devices. Sci China Mater, 2017, 60: 25-38 CrossRef Google Scholar

[3] Yu Z, Tetard L, Zhai L, et al. Supercapacitor electrode materials: nanostructures from 0 to 3 dimensions. Energ Environ Sci, 2015, 8: 702-730 CrossRef Google Scholar

[4] Yan J, Wang Q, Wei T, et al. Recent advances in design and fabrication of electrochemical supercapacitors with high energy densities. Adv Energ Mater, 2014, 4: 1300816 CrossRef Google Scholar

[5] Ferris A, Garbarino S, Guay D, et al. 3D RuO2 microsupercapacitors with remarkable areal energy. Adv Mater, 2015, 27: 6625-6629 CrossRef PubMed Google Scholar

[6] Tan Q, Wang P, Liu H, et al. Hollow MOx-RuO2 (M = Co, Cu, Fe, Ni, CuNi) nanostructures as highly efficient electrodes for supercapacitors. Sci China Mater, 2016, 59: 323-336 CrossRef Google Scholar

[7] Yu Z, Duong B, Abbitt D, et al. Highly Ordered MnO2 Nanopillars for Enhanced Supercapacitor Performance. Adv Mater, 2013, 25: 3302-3306 CrossRef PubMed Google Scholar

[8] Kong S, Cheng K, Gao Y, et al. A novel three-dimensional manganese dioxide electrode for high performance supercapacitors. J Power Sources, 2016, 308: 141-148 CrossRef ADS Google Scholar

[9] Della Noce R, Eugénio S, Silva TM, et al. α-Co(OH)2/carbon nanofoam composite as electrochemical capacitor electrode operating at 2 V in aqueous medium. J Power Sources, 2015, 288: 234-242 CrossRef ADS Google Scholar

[10] Gao S, Sun Y, Lei F, et al. Ultrahigh energy density realized by a single-layer β-Co(OH)2 all-solid-state asymmetric supercapacitor. Angew Chem Int Ed, 2014, 53: 12789-12793 CrossRef PubMed Google Scholar

[11] Sun W, Rui X, Ulaganathan M, et al. Few-layered Ni(OH)2 nanosheets for high-performance supercapacitors. J Power Sources, 2015, 295: 323-328 CrossRef ADS Google Scholar

[12] Du H, Wang Y, Yuan H, et al. Facile synthesis and high capacitive performance of 3D hierarchical Ni(OH)2 microspheres. Electrochim Acta, 2016, 196: 84-91 CrossRef Google Scholar

[13] Chen S, Duan J, Tang Y, et al. Hybrid hydrogels of porous graphene and nickel hydroxide as advanced supercapacitor materials. Chem Eur J, 2013, 19: 7118-7124 CrossRef PubMed Google Scholar

[14] Motori A, Sandrolini F, Davolio G. Electrical properties of nickel hydroxide for alkaline cell systems. J Power Sources, 1994, 48: 361-370 CrossRef ADS Google Scholar

[15] Yang GW, Xu CL, Li HL. Electrodeposited nickel hydroxide on nickel foam with ultrahigh capacitance. Chem Commun, 2008, 48: 6537–6539. Google Scholar

[16] Lu Z, Chang Z, Zhu W, et al. Beta-phased Ni(OH)2 nanowall film with reversible capacitance higher than theoretical Faradic capacitance. Chem Commun, 2011, 47: 9651-9653 CrossRef PubMed Google Scholar

[17] Jiang W, Zhai S, Wei L, et al. Nickel hydroxide–carbon nanotube nanocomposites as supercapacitor electrodes: crystallinity dependent performances. Nanotechnology, 2015, 26: 314003 CrossRef PubMed ADS Google Scholar

[18] Cheng H, Duong HM. Three dimensional carbon nanotube/nickel hydroxide gels for advanced supercapacitors. RSC Adv, 2015, 5: 30260-30267 CrossRef Google Scholar

[19] Wang K, Zhang X, Zhang X, et al. A novel Ni(OH)2/graphene nanosheets electrode with high capacitance and excellent cycling stability for pseudocapacitors. J Power Sources, 2016, 333: 156-163 CrossRef ADS Google Scholar

[20] Mao L, Guan C, Huang X, et al. 3D graphene-nickel hydroxide hydrogel electrode for high-performance supercapacitor. Electrochim Acta, 2016, 196: 653-660 CrossRef Google Scholar

[21] Tang Z, Tang C, Gong H. A high energy density asymmetric supercapacitor from nano-architectured Ni(OH)2/carbon nanotube electrodes. Adv Funct Mater, 2012, 22: 1272-1278 CrossRef Google Scholar

[22] Liu YF, Yuan GH, Jiang ZH, et al. Preparation of Ni(OH)2-graphene sheet-carbon nanotube composite as electrode material for supercapacitors. J Alloys Compd, 2015, 618: 37-43 CrossRef Google Scholar

[23] Wang L, Li X, Guo T, et al. Three-dimensional Ni(OH)2 nanoflakes/graphene/nickel foam electrode with high rate capability for supercapacitor applications. Int J Hydrogen Energ, 2014, 39: 7876-7884 CrossRef Google Scholar

[24] Erlebacher J, Aziz MJ, Karma A, et al. Evolution of nanoporosity in dealloying. Nature, 2001, 410: 450-453 CrossRef PubMed Google Scholar

[25] Lang X, Hirata A, Fujita T, et al. Nanoporous metal/oxide hybrid electrodes for electrochemical supercapacitors. Nat Nanotech, 2011, 6: 232-236 CrossRef PubMed ADS Google Scholar

[26] Chen LY, Hou Y, Kang JL, et al. Toward the theoretical capacitance of RuO2 reinforced by highly conductive nanoporous gold. Adv Energ Mater, 2013, 3: 851-856 CrossRef Google Scholar

[27] Kang J, Chen L, Hou Y, et al. Electroplated thick manganese oxide films with ultrahigh capacitance. Adv Energ Mater, 2013, 3: 857-863 CrossRef Google Scholar

[28] Kim SI, Kim SW, Jung K, et al. Ideal nanoporous gold based supercapacitors with theoretical capacitance and high energy/power density. Nano Energ, 2016, 24: 17-24 CrossRef Google Scholar

[29] Ke X, Xu Y, Yu C, et al. Nanoporous gold on three-dimensional nickel foam: an efficient hybrid electrode for hydrogen peroxide electroreduction in acid media. J Power Sources, 2014, 269: 461-465 CrossRef ADS Google Scholar

[30] Ke X, Xu Y, Yu C, et al. Pd-decorated three-dimensional nanoporous Au/Ni foam composite electrodes for H2O2 reduction. J Mater Chem A, 2014, 2: 16474-16479 CrossRef Google Scholar

[31] Ke X, Li Z, Gan L, et al. Three-dimensional nanoporous Au films as high-efficiency enzyme-free electrochemical sensors. Electrochim Acta, 2015, 170: 337-342 CrossRef Google Scholar

[32] Xu Y, Ke X, Yu C, et al. A strategy for fabricating nanoporous gold films through chemical dealloying of electrochemically deposited Au-Sn alloys. Nanotechnology, 2014, 25: 445602 CrossRef PubMed ADS Google Scholar

[33] Li Z, He Y, Ke X, et al. Three-dimensional nanoporous gold–cobalt oxide electrode for high-performance electroreduction of hydrogen peroxide in alkaline medium. J Power Sources, 2015, 294: 136-140 CrossRef ADS Google Scholar

[34] Yan J, Fan Z, Sun W, et al. Advanced asymmetric supercapacitors based on Ni(OH)2/graphene and porous graphene electrodes with high energy density. Adv Funct Mater, 2012, 22: 2632-2641 CrossRef Google Scholar

[35] Hou C, Lang XY, Wen Z, et al. Single-crystalline Ni(OH)2 nanosheets vertically aligned on a three-dimensional nanoporous metal for high-performance asymmetric supercapacitors. J Mater Chem A, 2015, 3: 23412-23419 CrossRef Google Scholar

[36] Li HB, Yu MH, Wang FX, et al. Amorphous nickel hydroxide nanospheres with ultrahigh capacitance and energy density as electrochemical pseudocapacitor materials. Nat Commun, 2013, 4: 1894 CrossRef PubMed ADS Google Scholar

[37] Deng T, Zhang W, Arcelus O, et al. Atomic-level energy storage mechanism of cobalt hydroxide electrode for pseudocapacitors. Nat Commun, 2017, 8: 15194 CrossRef PubMed ADS Google Scholar

[38] Kang JL, Hirata A, Qiu HJ, et al. Self-grown oxy-hydroxide@ nanoporous metal electrode for high-performance supercapacitors. Adv Mater, 2014, 26: 269-272 CrossRef PubMed Google Scholar

[39] Ji J, Zhang LL, Ji H, et al. Nanoporous Ni(OH)2 thin film on 3D ultrathin-graphite foam for asymmetric supercapacitor. ACS Nano, 2013, 7: 6237-6243 CrossRef PubMed Google Scholar

[40] Simon P, Gogotsi Y, Dunn B. Where do batteries end and supercapacitors begin?. Science, 2014, 343: 1210-1211 CrossRef PubMed ADS Google Scholar

[41] Wang HX, Zhang W, Drewett NE, et al. Unifying miscellaneous performance criteria for a prototype supercapacitor via Co(OH)2 active material and current collector interactions. J Microscopy, 2017, 267: 34-48 CrossRef PubMed Google Scholar

[42] Pan Z, Qiu Y, Yang J, et al. Ultra-endurance flexible all-solid-state asymmetric supercapacitors based on three-dimensionally coated MnOx nanosheets on nanoporous current collectors. Nano Energ, 2016, 26: 610-619 CrossRef Google Scholar

[43] Zhang G, Lou XWD. general solution growth of mesoporous NiCo2O4 nanosheets on various conductive substrates as high-performance electrodes for supercapacitors. Adv Mater, 2013, 25: 976-979 CrossRef PubMed Google Scholar

[44] Yeo BS, Bell AT. In situ Raman study of nickel oxide and gold-supported nickel oxide catalysts for the electrochemical evolution of oxygen. J Phys Chem C, 2012, 116: 8394–8400. Google Scholar

  • Figure 1

    Schematic illustration of the fabrication procedure for the Ni(OH)2@NPG/Ni foam electrodes.

  • Figure 2

    Photograph of a 1×1 cm2 Ni foam, 1×1 cm2 NPG/Ni foam composite and 1×1 cm2 Ni(OH)2@NPG/Ni foam electrode. Inset: a Ni(OH)2@NPG/Ni foam electrode bent to illustrate its good flexibility (a); Top-view SEM images of the pristine Ni foam (b, c) and the NPG/Ni foam composite (d–g) under different magnifications, and the cross-sectional SEM image of the NPG film (h).

  • Figure 3

    Top-view SEM images of Ni(OH)2@NPG/Ni foam electrode under different magnifications (a–c), and the corresponding cross-sectional SEM image (d).

  • Figure 4

    XRD patterns of the NPG/Ni foam composite and the Ni(OH)2@NPG/Ni foam electrode (a), and XPS spectrum of Ni 2p orbitals for the Ni(OH)2 electrodeposited on the NPG/Ni foam composite (b).

  • Figure 5

    Typical CVs of the Ni(OH)2@NPG/Ni foam electrode (a) and the specific capacitance of the Ni(OH)2@NPG/Ni foam electrode and the Ni(OH)2@Ni foam electrode at various scan rates (b). GCD curves of the Ni(OH)2@NPG/Ni foam electrode (c) and the specific capacitance of the Ni(OH)2@NPG/Ni foam electrode and the Ni(OH)2@Ni foam electrode at various current densities (d).

  • Figure 6

    Nyquist plots of the Ni(OH)2@NPG/Ni foam electrode and the Ni(OH)2@Ni foam electrode (a), with a magnification of the high frequency region in the bottom right inset and an equivalent circuit model in the top right inset (a). Cycling stability of the Ni(OH)2@NPG/Ni foam electrode and the Ni(OH)2@Ni foam electrode as a function of the cycle number at a current density of 30 A g–1 (b).

  • Figure 7

    Top-view SEM images of the Ni(OH)2@NPG/Ni foam electrode under different magnifications after charge/discharge cycling (a-c), and the corresponding cross-sectional SEM image (d).

Copyright 2020 Science China Press Co., Ltd. 《中国科学》杂志社有限责任公司 版权所有

京ICP备17057255号       京公网安备11010102003388号