Two-dimensional porous (Co, Ni)-based monometallic hydroxides and bimetallic layered double hydroxides thin sheets with honeycomb-like nanostructure as positive electrode for high-performance hybrid supercapacitors

Huang, Biao; Wang, Wensong; Pu, Tao; Li, Jie; Zhu, Jikui; Zhao, Chenglan; Xie, Li; Chen, Lingyun

doi:10.1016/j.jcis.2018.08.019

Cited by 122 publications

(34 citation statements)

References 61 publications

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“…The CF@NiCoZn‐LDH/Co 9 S 8 ‐QD//CNS‐SCN full cell delivers a maximum energy density of 56.4 Wh kg −1 at a power density of 875.0 W kg −1 and still reaches 42 Wh kg −1 at a high‐power density of 8200.0 W kg −1 . In addition, the energy storage performance of our devices is obviously better than that of other reported homologous supercapacitors, such as Zn 1 Co 2 ‐LDH@rGO/NF//AC (53.2 Wh kg −1 at 405 W kg −1 ), NiV‐S//AC (51 Wh kg −1 at 1600 W kg −1 ), CSNTs@Ni‐Co LDH NSs//AC (50 Wh kg −1 at 893 W kg −1 ), NiCo‐LDH/PANI/BC//N‐CBC/CC (47.3 Wh kg −1 at 828.9 W kg −1 ), NiCo‐LDH/Co 9 S 8 //CNTs (39 Wh kg −1 at 2400 W kg −1 ), NiAl‐LDH/MnO 2 ‐6//AC (30.4 Wh kg −1 at 789.8 W kg −1 ), NiMn‐LDH/PPy/BC//AC (29.8 Wh kg −1 at 299 W kg −1 ), MnOOH/NiAl‐LDH//AC (26.89 Wh kg −1 at 800 W kg −1 ), rGO@NiMn‐LDH@NF//AC (22.5 Wh kg −1 at 700 W kg −1 ), and CoNi‐LDH//AC (20.38 Wh kg −1 at 800 W kg −1 ) . To verify the practical application, two as‐prepared HSCs devices connected in series can light many 5 mm light‐emitting diodes (LEDs) after a short charge, showing great potential for practical application of hybrid CF@NiCoZn‐LDH/Co 9 S 8 ‐QD//CNS‐SCN devices.…”

Section: Resultsmentioning

confidence: 73%

In Situ Formation of Co₉S₈ Quantum Dots in MOF‐Derived Ternary Metal Layered Double Hydroxide Nanoarrays for High‐Performance Hybrid Supercapacitors

Yang

Wang

Liu

et al. 2020

Advanced Energy Materials

165

104

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Layered double hydroxides (LDHs) are promising cathode materials for supercapacitors because of the enhanced flow efficiency of ions in the interlayers. However, the limited active sites and monotonous metal species further hinder the improvement of the capacity performance. Herein, cobalt sulfide quantum dots (Co9S8‐QDs) are effectively created and embedded within the interlayer of metal‐organic‐frameworks‐derived ternary metal LDH nanosheets based on in situ selective vulcanization of Co on carbon fibers. The hybrid CF@NiCoZn‐LDH/Co9S8‐QD retains the lamellar structure of the ternary metal LDH very well, inheriting low transfer impedance of interlayer ions. Significantly, the selectively generated Co9S8‐QDs expose more abundant active sites, effectively improving the electrochemical properties, such as capacitive performance, electronic conductivity, and cycling stability. Due to the synergistic relationship, the hybrid material delivers an ultrahigh electrochemical capacity of 350.6 mAh g−1 (2504 F g−1) at 1 A g−1. Furthermore, hybrid supercapacitors fabricated with CF@NiCoZn‐LDH/Co9S8‐QD and carbon nanosheets modified by single‐walled carbon nanotubes display an outstanding energy density of 56.4 Wh kg−1 at a power density of 875 W kg−1, with an excellent capacity retention of 95.3% after 8000 charge–discharge cycles. Therefore, constructing hybrid electrode materials by in situ‐created QDs in multimetallic LDHs is promising.

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Section: Resultsmentioning

confidence: 73%

In Situ Formation of Co₉S₈ Quantum Dots in MOF‐Derived Ternary Metal Layered Double Hydroxide Nanoarrays for High‐Performance Hybrid Supercapacitors

Yang

Wang

Liu

et al. 2020

Advanced Energy Materials

165

104

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“…The result shows that the ZCS electrode has low series resistances and fast charge-transfer rate, which is due to the abundant electrochemical active sites of the binary metal sulfides. Moreover, the slope of the straight line of the ZCS electrode is larger than that of the ZCO electrode in the lower frequency region, indicating that ion diffusion rate of the ZCS electrode is higher than that of the ZCO electrode [50,51]. Therefore, the ZCS electrode has a much lower electronic resistance than the ZCO electrode, which is beneficial to the increase of specific capacitance value.…”

Section: Electrochemical Properties Of Electrodes Based On Zco and Zcs Npsmentioning

confidence: 96%

Zinc cobalt sulfide nanoparticles as high performance electrode material for asymmetric supercapacitor

Sun

et al. 2019

Electrochimica Acta

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Zinc cobalt sulfide (ZCS) is a promising and high performance electrode material for pseudocapacitors due to its good electrical conductivity, abundant active sites and rich valence states. In this work, zinc cobalt oxide (ZCO) nanoparticles are firstly synthesized via a hydrothermal method assisted by hexadecyltrimethyl ammonium bromide (CTAB), and then transformed into zinc cobalt sulfide nanoparticles (ZCS NPs) using a facile sulfuration process. The average diameter of ZCS NPs is estimated to be about 15 nm, which is beneficial for Faradaic redox reactions in energy storage process due to their numerous active surfaces. The ZCS NPs are then coated onto a nickel foam to form the working electrode of supercapacitors. Because the ZCS electrode has lower series and charge transfer resistance, and also higher ion diffusion rate than that of the ZCO electrode, it achieves a large specific capacitance of 1269.1 F g -1 at 0.5 A g -1 in 2 M KOH electrolyte, which is four times more than that of the ZCO electrode (e.g., 295.8 F g -1 at 0.5 A g -1 ). In addition, an asymmetric supercapacitor using the ZCS NPs as the positive electrode and activated carbon as the negative electrode is assembled, which delivers a high energy density of 45.4 Wh kg -1 at a power density of 805.0 W kg -1 , with an excellent cycling stability (91.6 % retention of the initial capacitance over 5000 cycles).

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“…So there is a focus on the introduction of a small portion (about 0.2∼0.4) of foreign bivalent or trivalent metal cation and intercalated anions to α‐M(OH) 2 for hydrotalcite‐like LDHs with higher energy storage performance . In the alkaline electrolyte, the discharge product of M(OH) 2 is oxyhydroxide MOOH, and CoOOH will further discharge and produce CoO 2 . The possible reversible electrochemical redox reaction of M(OH) 2 on positive electrode are listed as the following equation (9) and the above‐mentioned equation :

true normalM (OH)_{2} + OH^{-} \leftrightarrow MOOH + normalH_{2} normalO + normale^{-} (M = Co or Ni)

…”

Section: D Transition Metal Hydroxidesmentioning

confidence: 99%

“…Honeycomb‐like 2D Co−Ni LDHs thin sheets composed of self‐supporting cross‐linked 2D/3D hybrid nanostructures were prepared via a facile co‐precipitation route to serve as high‐performance electrode materials . In comparison with monometallic Co(OH) 2 and Ni(OH) 2 , the as‐prepared porous Co−Ni LDHs showed the larger interlayer distance of 0.78 nm and BET surface area of 134.38 m 2 ⋅ g −1 , suggestive of stronger capability for accommodating more electrolyte ions and more adequate contact between active materials and electrolyte.…”

Section: D Transition Metal Hydroxidesmentioning

confidence: 99%

Novel Two‐Dimensional Porous Materials for Electrochemical Energy Storage: A Minireview

Mao

Zhao

Wang

et al. 2020

The Chemical Record

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Two dimensional (2D) porous materials have great potential in electrochemical energy conversion and storage. Over the past five years, our research group has focused on Simple, Mass, Homogeneous and Repeatable Synthesis of various 2D porous materials and their applications for electrochemical energy storage especially for supercapacitors (SCs). During the experimental process, through precisely controlling the experimental parameters, such as reaction species, molar ratio of different ions, concentration, pH value of reaction solution, heating temperature, and reaction time, we have successfully achieved the control of crystal structure, composition, crystallinity, morphology, and size of these 2D porous materials including transition metal oxides (TMOs), transition metal hydroxides (TMHOs), transition metal oxalates (TMOXs), transition metal coordination complexes (TMCCs) and carbon materials, as well as their derivatives and composites. We have also named some of them with CQU‐Chen (CQU is the initialism of Chongqing University, Chen is the last name of Lingyun Chen), such as CQU‐Chen‐Co−O‐1, CQU‐Chen‐Ni−O−H‐1, CQU‐Chen‐Zn−Co−O‐1, CQU‐Chen‐Zn−Co−O‐2, CQU‐Chen‐OA−Co‐2‐1, CQU‐Chen‐Co−OA‐1, CQU‐Chen‐Ni−OA‐1, CQU‐Chen‐Gly−Co‐3‐1, CQU‐Chen‐Gly−Ni‐2‐1, CQU‐Chen‐Gly−Co−Ni‐1, etc. The introduction of 2D porous materials as electrode materials for SCs improves the energy storage performances. These materials provide a large number of active sites for ion adsorption, supply plentiful channels for fast ion transport and boost electrical conductivity and facilitate electron transportation and ion penetration. The unique 2D porous structures review is mainly devoted to the introduction of our contribution in the 2D porous nanostructured materials for SC. Finally, the further directions about the preparation of 2D porous materials and electrochemical energy conversion and storage applications are also included.

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Two-dimensional porous (Co, Ni)-based monometallic hydroxides and bimetallic layered double hydroxides thin sheets with honeycomb-like nanostructure as positive electrode for high-performance hybrid supercapacitors

Cited by 122 publications

References 61 publications

In Situ Formation of Co₉S₈ Quantum Dots in MOF‐Derived Ternary Metal Layered Double Hydroxide Nanoarrays for High‐Performance Hybrid Supercapacitors

In Situ Formation of Co₉S₈ Quantum Dots in MOF‐Derived Ternary Metal Layered Double Hydroxide Nanoarrays for High‐Performance Hybrid Supercapacitors

Zinc cobalt sulfide nanoparticles as high performance electrode material for asymmetric supercapacitor

Novel Two‐Dimensional Porous Materials for Electrochemical Energy Storage: A Minireview

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Two-dimensional porous (Co, Ni)-based monometallic hydroxides and bimetallic layered double hydroxides thin sheets with honeycomb-like nanostructure as positive electrode for high-performance hybrid supercapacitors

Cited by 122 publications

References 61 publications

In Situ Formation of Co9S8 Quantum Dots in MOF‐Derived Ternary Metal Layered Double Hydroxide Nanoarrays for High‐Performance Hybrid Supercapacitors

In Situ Formation of Co9S8 Quantum Dots in MOF‐Derived Ternary Metal Layered Double Hydroxide Nanoarrays for High‐Performance Hybrid Supercapacitors

Zinc cobalt sulfide nanoparticles as high performance electrode material for asymmetric supercapacitor

Novel Two‐Dimensional Porous Materials for Electrochemical Energy Storage: A Minireview

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Resources

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In Situ Formation of Co₉S₈ Quantum Dots in MOF‐Derived Ternary Metal Layered Double Hydroxide Nanoarrays for High‐Performance Hybrid Supercapacitors

In Situ Formation of Co₉S₈ Quantum Dots in MOF‐Derived Ternary Metal Layered Double Hydroxide Nanoarrays for High‐Performance Hybrid Supercapacitors