Ultrathin Ni-Al layered double hydroxide nanosheets with enhanced supercapacitor performance

Liu, Huili; Yu, Tingting; Su, Dongqin; Tang, Zehua; Zhang, Junhao; Liu, Yuanjun; Yuan, Aihua; Kong, Qinghong

doi:10.1016/j.ceramint.2017.07.207

Cited by 60 publications

(24 citation statements)

References 31 publications

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“…Li et al reported that the specific capacity of Ni/Al LDHs by using a self-assembly method is up to 128.5-218.9 mAh g −1 at 1 A g −1 [27][28][29]. Liu and Huang reported a Ni/Al LDHs synthesized by hydrothermal method has a specific capacity of 268.6 and 294.8 mAh g −1 at 1 A g -1 , respectively [30,31]. In addition, the composites of Ni/Al LDHs with porous carbon, nickel foam or graphene have attracted lots of researcher's attentions [32][33][34][35][36].…”

Section: Accepted Manuscriptmentioning

confidence: 99%

Preparation of 3D spherical Ni/Al LDHs with significantly enhanced electrochemical performance as a superior cathode material for Ni/MH batteries

Nie

Pan

et al. 2018

Electrochimica Acta

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Nickel-based hydroxides with excellent electrochemical performance have been considered as cathode materials for Ni/MH batteries. In this paper, a Ni/Al layered double hydroxides (Ni/Al LDHs) material with three-dimensional (3D) spherical structure is synthesized by a facile stable dual complexation-precipitation method. SEM images show that the obtained Ni/Al LDHs possess 3D spherical structure composed of nanosheets. XRD and CV tests indicate that doping of Al increases the distance between Ni-Al layers, greatly improving the specific capacity of the obtained materials. The electrochemical tests show that the specific capacity of the obtained material with 18% Al is up to 383.4 mAh g −1 at a current density of 1 A g −1. In addition, when the current density is further increased to 10 and 20 A g −1 , the specific capacity of this material still maintains 345.0 mAh g −1 and 307.9 mAh g −1 , respectively, which implies that this cathode material can provide remarkable power densities. Moreover, the material composed of Ni/Al LDHs keeps 97.6% initial capacity after 5,000 cycles at a current density of 10 A g −1 , showing an excellent cycling stability and durability.

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Section: Accepted Manuscriptmentioning

confidence: 99%

Preparation of 3D spherical Ni/Al LDHs with significantly enhanced electrochemical performance as a superior cathode material for Ni/MH batteries

Nie

Pan

et al. 2018

Electrochimica Acta

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“…However, α-Ni(OH) 2 tends to convert to β-Ni(OH) 2 in alkaline solution or when subjected to charge-discharge cycles [20]. Doping or partially substituting with other metal ions, such as Mg [21,22], Al [23][24][25][26], Mn [27], Fe [4], Co [28][29][30][31][32] or Zn [33] in α-Ni(OH) 2 has found to be an effective way to stabilize the crystal structure; the resulting complex nickel hydroxides have demonstrated much improved electrochemical properties and performance when used as electrodes in supercapacitors. For example, α-phase NiCoMn hydroxide demonstrated high power densities and high energy [34], CoAl hydroxide possessed enhanced electrochemical performance [35,36].…”

Section: Introductionmentioning

confidence: 99%

α- and β-Phase Ni-Mg Hydroxide for High Performance Hybrid Supercapacitors

et al. 2019

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Mg-substituted α- and β-phase nickel hydroxides with high specific capacitance and good stability have been synthesized via sacrificial metal-based replacement reaction. 2D α- and β-phase nickel-magnesium hydroxide (NiMg-OH) have been synthesized by sacrificing magnesium (Mg) powder with nickel salt aqueous solutions. Interestingly, the phase of the obtained NiMg-OH can be controlled by adjusting the nickel precursor. As well, the Mg powder is used not only as Mg source but also alkali source to form NiMg-OH. The α-phase nickel-magnesium hydroxide sample (α-NiMg-OH) exhibits lager surface area of 290.88 m2 g–1. The electrochemical performances show that the α-NiMg-OH presented a superior specific capacitance of 2602 F g–1 (1 A g–1) and β-phase nickel-magnesium hydroxide sample (β-NiMg-OH) exhibits better stability with 87% retention after 1000 cycles at 10 A g–1. The hybrid supercapacitor composed of α-NiMg-OH and activated carbon (AC) display high storage performance and cycle stability, it presents 89.7 F g–1 (1 A g–1) and of 0–1.6 V potential window and it maintains capacitance retention of 84.6% subsequent to 4000 cycles.

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“…16 Co 2 GeO 4 /graphene nanocomposites were synthesized by a hydrothermal method, znd exhibited high reversible capacity and good cycling performance and rate capability due to the high electronic conductivity and high specic area of graphene. 17,18 In general, most carbon based composites employ either graphene or carbon nanotubes as the carbon substrates, and a traditional method needs to be used to further prepare electrodes with conductive carbon and a binder. This may cause some problems, such as the exfoliation of the active materials from the current collector, loss of the entire composite capacity, etc.…”

Section: Introductionmentioning

confidence: 99%

Zn₂GeO₄ nanorods grown on carbon cloth as high performance flexible lithium-ion battery anodes

Liu

Huang

et al. 2017

RSC Adv.

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Ultrathin Ni-Al layered double hydroxide nanosheets with enhanced supercapacitor performance

Cited by 60 publications

References 31 publications

Preparation of 3D spherical Ni/Al LDHs with significantly enhanced electrochemical performance as a superior cathode material for Ni/MH batteries

Preparation of 3D spherical Ni/Al LDHs with significantly enhanced electrochemical performance as a superior cathode material for Ni/MH batteries

α- and β-Phase Ni-Mg Hydroxide for High Performance Hybrid Supercapacitors

Zn₂GeO₄ nanorods grown on carbon cloth as high performance flexible lithium-ion battery anodes

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Ultrathin Ni-Al layered double hydroxide nanosheets with enhanced supercapacitor performance

Cited by 60 publications

References 31 publications

Preparation of 3D spherical Ni/Al LDHs with significantly enhanced electrochemical performance as a superior cathode material for Ni/MH batteries

Preparation of 3D spherical Ni/Al LDHs with significantly enhanced electrochemical performance as a superior cathode material for Ni/MH batteries

α- and β-Phase Ni-Mg Hydroxide for High Performance Hybrid Supercapacitors

Zn2GeO4 nanorods grown on carbon cloth as high performance flexible lithium-ion battery anodes

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Zn₂GeO₄ nanorods grown on carbon cloth as high performance flexible lithium-ion battery anodes