2008
DOI: 10.1016/j.jpowsour.2007.09.004
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Potentiostatically deposited nanostructured CoxNi1−x layered double hydroxides as electrode materials for redox-supercapacitors

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Cited by 297 publications
(194 citation statements)
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“…It is most likely that the cobalt substitution improves charging efficiency, resulting from the special structure of co-deposited materials. The rise in capacitance with increasing amounts of nickel is not unexpected [18,20]. Here, one hypothesis is proposed: The highly conductive Co(OH) 2 shell provides a good support for the low-conductive Ni(OH) 2 spheres and allows more Ni(OH) 2 spheres to react.…”
Section: Electrochemical Measurementsmentioning
confidence: 93%
See 1 more Smart Citation
“…It is most likely that the cobalt substitution improves charging efficiency, resulting from the special structure of co-deposited materials. The rise in capacitance with increasing amounts of nickel is not unexpected [18,20]. Here, one hypothesis is proposed: The highly conductive Co(OH) 2 shell provides a good support for the low-conductive Ni(OH) 2 spheres and allows more Ni(OH) 2 spheres to react.…”
Section: Electrochemical Measurementsmentioning
confidence: 93%
“…Another method is the substitution of nickel by other metals to enhance conductivity; cobalt is usually used because it shares a similar crystal structure with Ni [17]. The co-deposition of Ni and Co can reach a high supercapacitance of 1920 F g −1 , consistently higher than the counterpart of Ni or Co modified alone [14,[17][18][19][20][21]. Intensive research has focussed on the structure of Ni-Co compounds.…”
Section: Introductionmentioning
confidence: 99%
“…The combined deposition of LDH with surfactants yields superhydrophobic barrier films that are of interest in coatings science . Finally thin and ultrathin LDH films have been developed for energy management, thus via electrodeposition highly exposed electrode materials can be prepared (Gupta et al, 2008). For instance Ni or Co LDH films are cathodically electrodeposited through the reduction of nitrate ions; the increasing OH -concentration promoting the LDH precipitation at the surface (Indira & Kamath, 1994).…”
Section: Layered Double Hydroxides (Ldh)mentioning
confidence: 99%
“…Outras aplicações eletroquímicas para HDLs, relacionadas com o desenvolvimento de materiais aplicados como catalisadores da oxidação da água [23,24] e supercapacitores, [25][26][27] e alta eficiência, cerca de dez vezes maior que para os compostos Co(OH)2 e Co3O4. A alta eficiência pode estar relacionada a estrutura de microporos dos HDLs, permitindo rápida difusão dos reagentes e produtos, acompanhada de mais sítios ativos [19].…”
Section: Temperatura De Curieunclassified
“…Os valores de capacitância específica desses materiais apresentam valores elevados entre 1800 e 2700 F g -1 , quando comparados a outros materiais [25][26][27].…”
Section: Temperatura De Curieunclassified