Unipolar pulse electrodeposition of nickel hexacyanoferrate thin films with controllable structure on platinum substrates

Hao, Xiaogang; Yan, Tao; Wang, Zhongde; Liu, Shibin; Zhen, Liang; Shen, Yinghua; Pritzker, Mark

doi:10.1016/j.tsf.2011.10.005

Cited by 43 publications

(34 citation statements)

References 35 publications

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“…[14] Like bulk nickel electrode surface, the formation of NiHCF on SWCNTs also follows the same surface derivatization mechanism, that is, first the electrolyte containing ferricyanide reacts with a residual impurity such as Ni 0 on SWCNTs and is converted to Ni 2 + , and this is followed by (Figure 1 B) and applying Faradays law of electrolysis. [14] Like bulk nickel electrode surface, the formation of NiHCF on SWCNTs also follows the same surface derivatization mechanism, that is, first the electrolyte containing ferricyanide reacts with a residual impurity such as Ni 0 on SWCNTs and is converted to Ni 2 + , and this is followed by (Figure 1 B) and applying Faradays law of electrolysis.…”

Section: Resultsmentioning

confidence: 97%

Residual Metal Impurity Aids Facile In Situ Electrochemical Surface Derivatization of Single‐Walled Carbon Nanotubes

Boopathi¹,

Sudha²,

S³

et al. 2014

Chemistry An Asian Journal

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Residual metal impurities were exploited as reactants in the functionalization of the surface of single-walled carbon nanotubes (SWCNT) with nickel hexacyanoferrate (NiHCF) by simple electrochemical cycling in ferricyanide solutions. This facile in situ electrochemical modification process provides intimate contact between NiHCF and SWCNTs that improves the stability of the redox property and reactivity of NiHCF. The characteristic redox behavior of NiHCF on SWCNT surfaces can be used as an electrochemical probe to access qualitative and quantitative information on unknown electroactive metal impurities in SWCNTs. Significantly, the NiHCF-modified SWCNTs exhibit pseudocapacitive behavior, and the calculated specific capacitances are 710 and 36 F g(-1) for NiHCF-SWCNTs and SWCNTs respectively. Furthermore, NiHCF-SWCNTs were transformed into Ni(OH)2 /SWCNTs and used for enzymeless glucose oxidation.

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Section: Resultsmentioning

confidence: 97%

Residual Metal Impurity Aids Facile In Situ Electrochemical Surface Derivatization of Single‐Walled Carbon Nanotubes

Boopathi¹,

Sudha²,

S³

et al. 2014

Chemistry An Asian Journal

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“…UPED was developed by Hao et al. to deposit nickel hexacyanoferrate and polyaniline film with uniform structure on various substrates such as platinum sheets and nickel foam . In the present work, the NiCo LDH was fabricated by a one‐step UPED method.…”

Section: Introductionmentioning

confidence: 99%

Controllable Synthesis of NiCo LDH Nanosheets for Fabrication of High‐Performance Supercapacitor Electrodes

Wang

et al. 2017

Electroanalysis

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112

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A unipolar pulse electrodeposition method was employed to controllably synthesize nanosheet type NiCo LDH. The effect of concentration rate of Ni(NO3)2/Co(NO3)2 preparation solution on crystalline structure, morphology and supercapacitive performance was investigated systematically. Experimental found that the morphology and composition of NiCo LDH was highly depend on the Ni2+/Co2+ molar ratios of preparation solution; and the obtained Ni0.76Co0.24 LDH materials showed small nanosheet size and uniform distribution on carbon fiber electrode. Ni0.76Co0.24 LDH electrode was evaluated for supercapacitor application, which revealed a high specific capacitances of 2189.8 and 1908.8 F g−1 at the current density of 1 and 30 A g−1 respectively and a good cycle stability, retaining 70.3 % of the initial capacitance after 20000 charge and discharge cycles at 50 A g−1. Moreover, the Ni0.76Co0.24 LDH electrode exhibits a high energy density of 76 Wh Kg−1 at a power density of 250 W Kg−1 and a high power density of 7500 W Kg−1 at energy density of 66 Wh Kg−1. The as‐prepared Ni0.76Co0.24 LDH as positive electrode for asymmetric supercapacitor exhibits excellent energy density of 4.1 Wh Kg‐1 at a power density of 4000 W Kg‐1

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“…63 However, because NiHCF is formed upon the precipitation reaction of [Fe(CN) 6 ] 3− and Ni 2+ ions derived from the dissolution of nickel substrate, the growth of NiHCF film will stop when the nickel substrate is fully covered by the growing film. 65,66 In this procedure, the controlled synthesis of single "insoluble" NiHCF films can be realized by using high pulse potential. 64 The film forms via the reduction of ferricyanide from marginally stable solutions containing divalent nickel.…”

Section: Nickel Hexacyanoferratementioning

confidence: 99%

Electroactive ion exchange materials: current status in synthesis, applications and future prospects

Hao

Wang

et al. 2016

J. Mater. Chem. A

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Electroactive ion exchange materials (EIXMs) with unique electrochemically switched ion exchange function have been extensively applied in various fields including high value-added ion recovery, toxic ion removal, energy storage device and electrochimical ion sensor. In particular, the charge and discharge of EIXMs can be electrochemically controlled by external electric field or by redox agent while the charge balance is compensated via the ion exchange with electrolyte solution. To date, the discovered EIXMs mainly involve inorganic compounds with mixed-valence transition metals, organic conducting polymers and organic-inorganic hybrid materials. Compared with their bulk forms, nanostructured EIXMs have aroused considerable research interest recently owing to their unique properties such as larger surface area, better ion diffusion path and more excellent electron transfer property. In this article, the design principles and synthetic routes for the development of various nanostructured EIXMs and their applications in the fields of selective ion separation, supercapacitors and electrochemical ion sensors are reviewed. In addition, the main challenges and future prospects for the further development of high-performance EIXMs are discussed.

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Unipolar pulse electrodeposition of nickel hexacyanoferrate thin films with controllable structure on platinum substrates

Cited by 43 publications

References 35 publications

Residual Metal Impurity Aids Facile In Situ Electrochemical Surface Derivatization of Single‐Walled Carbon Nanotubes

Residual Metal Impurity Aids Facile In Situ Electrochemical Surface Derivatization of Single‐Walled Carbon Nanotubes

Controllable Synthesis of NiCo LDH Nanosheets for Fabrication of High‐Performance Supercapacitor Electrodes

Electroactive ion exchange materials: current status in synthesis, applications and future prospects

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