A monolithic functional film of nanotubes/cellulose/ionic liquid for high performance supercapacitors

Basiricò, Lucia; Lanzara, Giulia

doi:10.1016/j.jpowsour.2014.08.040

Cited by 8 publications

(5 citation statements)

References 55 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[13][14][15][16] Furthermore, aqueous electrolytes, with higher ionic conductivity, are conducive to a better rate performance of aqueous rechargeable batteries, giving them an edge over lithium ion batteries using organic electrolytes. [17][18][19][20][21] Nickel zinc (NiÀ Zn) batteries have the potential to be developed into one of the most reliable secondary alkaline batteries, due to their high output voltage platform of about 1.8 V (the output voltage platform of the other similar batteries is mostly lower than 1.2 V), high energy density, low cost, non-toxicity, and abundance of resources. [22][23][24][25][26] Although the Zn anodes own the high theoretical capacity (820 mAh g À 1 ) and low redox potential, the further development and utilization of NiÀ Zn batteries are largely restrained by the inevitable dendrite growth of Zn anodes and non-reversibility of Ni-based cathodes, which will lead to poor cycling stability.…”

Section: Introductionmentioning

confidence: 99%

Nickel@Nickel Oxide Dendritic Architectures with Boosted Electrochemical Reactivity for Aqueous Nickel–Zinc Batteries

Wang

Zeng

et al. 2020

ChemElectroChem

View full text Add to dashboard Cite

Rechargeable alkaline zinc‐ion batteries (ZIBs) have gained extensive attention on account of their inexpensiveness, and high levels of safety and output voltage, but the lack of suitable cathode materials with high energy storage property and long cycle stability limits further development of ZIBs. Herein, we report an effective two‐step electrochemical approach to prepare Ni@NiO core‐shell dendritic architectures as cathode material for rechargeable alkaline ZIBs. Benefiting from the highly active NiO shell and unique core‐shell structure, this Ni@NiO electrode shows an excellent discharge capacity (0.112 mAh cm−2, at 4 mA cm−2) and a high rate capability (63.7 % capacity retention at 40 mA cm−2). Furthermore, the alkaline ZIBs with this Ni@NiO cathode also displays a high energy density of 0.193 mWh cm−2 and a remarkable power density of 65.0 mW cm−2.

show abstract

Section: Introductionmentioning

confidence: 99%

Nickel@Nickel Oxide Dendritic Architectures with Boosted Electrochemical Reactivity for Aqueous Nickel–Zinc Batteries

Wang

Zeng

et al. 2020

ChemElectroChem

View full text Add to dashboard Cite

show abstract

“…A promising direction in the context of material optimization is that offered by nanostructured materials which can exhibit multifunctional properties and are thus prone to more advanced multi-objective optimizations. In this field, nanocomposite materials made of thermosetting or thermoplastic polymers integrated with carbon nanotubes (CNTs) are currently subject to intense developments due to their superior mechanical/electrical/thermal performance, electromagnetic shielding or energy storage capacity [ 4 , 5 , 6 , 7 ]. Among other attractive properties exhibited by nanocomposites, a relatively high strength-to-weight ratio, unique damping capability [ 8 , 9 ] and high fatigue tolerance make them ideal candidates for whole new classes of multifunctional composite structures (e.g., high-performance vehicles, aerostructures and devices).…”

Section: Introductionmentioning

confidence: 99%

Optimal Design of CNT-Nanocomposite Nonlinear Shells

et al. 2020

View full text Add to dashboard Cite

Carbon nanotube/polymer nanocomposite plate- and shell-like structures will be the next generation lightweight structures in advanced applications due to the superior multifunctional properties combined with lightness. Here material optimization of carbon nanotube/polymer nanocomposite beams and shells is tackled via ad hoc nonlinear finite element schemes so as to control the loss of stability and overall nonlinear response. Three types of optimizations are considered: variable through-the-thickness volume fraction of random carbon nanotubes (CNTs) distributions, variable volume fraction of randomly oriented CNTs within the mid-surface, aligned CNTs with variable orientation with respect to the mid-surface. The collapse load, which includes both limit points and deformation thresholds, is chosen as the objective/cost function. An efficient computation of the cost function is carried out using the Koiter reduced order model obtained starting from an isogeometric solid-shell model to accurately describe the point-wise material distribution. The sensitivity to geometrical imperfections is also investigated. The optimization is carried out making use of the Global Convergent Method of Moving Asymptotes. The extensive numerical analyses show that varying the volume fraction distribution as well as the CNTs orientation can lead to significantly enhanced performances towards the loss of elastic stability making these lightweight structures more stable. The most striking result is that for curved shells, the unstable postbuckling response of the baseline material can be turned into a globally stable response maintaining the same amount of nanostructural reinforcement but simply tailoring strategically its distribution.

show abstract

“…To overcome this problem, several studies have examined ways of increasing the electrode surface for high energy density. Although the specific surface area can be increased by exchanging the electrode or modifying the fabrication process, the power loss can be also increased as a result of an increase in equivalent series resistance (ESR) [5][6][7][8][9][10][11][12]. Another approach to increasing the energy density is the fabrication of a hybrid supercapacitor (HS), which is consistent with a nonsymmetrical electrode [13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

The Surface Modification of Electrode with Solid Electrolyte Interphase for Hybrid Supercapacitor

Choi¹,

Kang²,

Yoon³

et al. 2015

Journal of Electrical Engineering and Technology

View full text Add to dashboard Cite

-A hybrid supercapacitor (HS) is an energy storage device used to enhance the low weight energy density (Wh/kg) of a supercapacitor. On the other hand, a sudden decrease in capacity has been pointed out as a reliability problem after many charge/discharge cycles. The reliability problem of a HS affects the early aging process. In this study, the capacity performance of a HS was observed after charge/discharge. For detailed analysis of the initial charge/discharge cycles, the charge and discharge curve was measured at a low current density. In addition, a solid electrolyte interphase (SEI) layer was confirmed after the charge/discharge. A HC composed of a lithium titanate (LTO) anode and active carbon cathode was used. The charge/discharge efficiency of the first cycle was lower than the late cycles and the charge/discharge rate was also lower. This behavior was induced by SEI layer formation, which consumed Li ions in the LTO lattice. The formation of a SEI layer after the charge/discharge cycles was confirmed using a range of analysis techniques.

show abstract

A monolithic functional film of nanotubes/cellulose/ionic liquid for high performance supercapacitors

Cited by 8 publications

References 55 publications

Nickel@Nickel Oxide Dendritic Architectures with Boosted Electrochemical Reactivity for Aqueous Nickel–Zinc Batteries

Nickel@Nickel Oxide Dendritic Architectures with Boosted Electrochemical Reactivity for Aqueous Nickel–Zinc Batteries

Optimal Design of CNT-Nanocomposite Nonlinear Shells

The Surface Modification of Electrode with Solid Electrolyte Interphase for Hybrid Supercapacitor

Contact Info

Product

Resources

About