Acetate anion-intercalated nickel-cobalt layered double hydroxide nanosheets supported on Ni foam for high-performance supercapacitors with excellent long-term cycling stability

Zha, Daosong; Sun, Huanhuan; Fu, Yongsheng; Ouyang, Xiaoping; Wang, Xin

doi:10.1016/j.electacta.2017.03.108

Cited by 132 publications

(74 citation statements)

References 70 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[27,39,40] Notably, by comparing with the as synthesized NiCo-LDHN Fa nd NP,t he (003) and (006) peaks were apparently shifted to lower 2q angles, implying an increased inter-lamellar spacing. [17,22,27] This enlarged interlayer spacingi ss peculated to arise from the intercalated anions. [17,22,27] This enlarged interlayer spacingi ss peculated to arise from the intercalated anions.…”

Section: Resultsmentioning

confidence: 94%

“…[25,[27][28][29] The band at 1614 cm À1 could be ascribed to the bending mode of OÀHvibration. [25,[27][28][29] The band at 1614 cm À1 could be ascribed to the bending mode of OÀHvibration.…”

Section: Resultsmentioning

confidence: 99%

“…[25,[27][28][29] The band at 1614 cm À1 could be ascribed to the bending mode of OÀHvibration. [27,41,43] The intercalation of CO 3 2À ion is known for its strong affinity to cationic host LDH layers, which was revealed by the symmetric and asymmetricv ibration of C=Oa t1 502 cm À1 and 1390 cm À1 ,r espectively. [27,41,43] The intercalation of CO 3 2À ion is known for its strong affinity to cationic host LDH layers, which was revealed by the symmetric and asymmetricv ibration of C=Oa t1 502 cm À1 and 1390 cm À1 ,r espectively.…”

Section: Resultsmentioning

confidence: 99%

“…[27,41,43] The intercalation of CO 3 2À ion is known for its strong affinity to cationic host LDH layers, which was revealed by the symmetric and asymmetricv ibration of C=Oa t1 502 cm À1 and 1390 cm À1 ,r espectively. [27,40,42] For the HNP sample, the band at 1560 cm À1 and 1380 cm À1 (overlapped with the vibration band of C=Oi n CO 3 2À )w as caused by the asymmetrica nd symmetric stretching vibrations of COO À , [27,40,43] and the bands at 2855 cm À1 and 2925 cm À1 waso wing to the CÀHv ibration, respectively, [27,40,42] implyingt he intercalation of CH 3 COO À ions. [27,40,42] For the HNP sample, the band at 1560 cm À1 and 1380 cm À1 (overlapped with the vibration band of C=Oi n CO 3 2À )w as caused by the asymmetrica nd symmetric stretching vibrations of COO À , [27,40,43] and the bands at 2855 cm À1 and 2925 cm À1 waso wing to the CÀHv ibration, respectively, [27,40,42] implyingt he intercalation of CH 3 COO À ions.…”

Section: Resultsmentioning

confidence: 99%

“…[20][21][22][23] However,t he structural instability and poor electrical conductivity may lead to reducede lectroactive surfacea rea and sluggish electron-transfer process, thus deterioratingt he electrochemical performance. [25][26][27][28][29] In parallel to these strategies, nanostructured engineering has been provent ob ea ne ffective approach to furtherb oost the electrochemical performance of materials by increasing the exposure of electroactives ites, enhancing the mass and charge transport, and alleviating the volume change andp article aggregation during redox reactions. [25][26][27][28][29] In parallel to these strategies, nanostructured engineering has been provent ob ea ne ffective approach to furtherb oost the electrochemical performance of materials by increasing the exposure of electroactives ites, enhancing the mass and charge transport, and alleviating the volume change andp article aggregation during redox reactions.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Multi‐Anion Intercalated Layered Double Hydroxide Nanosheet‐Assembled Hollow Nanoprisms with Improved Pseudocapacitive and Electrocatalytic Properties

Han

Cheng

et al. 2018

Chemistry An Asian Journal

View full text Add to dashboard Cite

Electrochemically active hollow nanostructured materials hold great promise in diverse energy conversion and storage applications, however, intricate synthesis steps and poor control over compositions and morphologies have limited the realization of delicate hollow structures with advanced functional properties. In this study, we demonstrate a one-step wet-chemical strategy for co-engineering the hollow nanostructure and anion intercalation of nickel cobalt layered double hydroxide (NiCo-LDH) to attain highly electrochemical active energy conversion and storage functionalities. Self-templated pseudomorphic transformation of cobalt acetate hydroxide solid nanoprisms using nickel nitrate leads to the construction of well-defined NiCo-LDH hollow nanoprisms (HNPs) with multi-anion intercalation. The unique hierarchical nanosheet-assembled hollow structure and efficiently expanded interlayer spacing offer an increased surface area and exposure of active sites, reduced mass and charge transfer resistance, and enhanced stability of the materials. This leads to a significant improvement in the pseudocapacitive and electrocatalytic properties of NiCo-LDH HNP with respect to specific capacitance, rate and cycling performance, and OER overpotential, outperforming most of the recently reported NiCo-based materials. This work establishes the potential of manipulating sacrificial template transformation for the design and fabrication of novel classes of functional materials with well-defined nanostructures for electrochemical applications and beyond.

show abstract

Section: Resultsmentioning

confidence: 94%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Multi‐Anion Intercalated Layered Double Hydroxide Nanosheet‐Assembled Hollow Nanoprisms with Improved Pseudocapacitive and Electrocatalytic Properties

Han

Cheng

et al. 2018

Chemistry An Asian Journal

View full text Add to dashboard Cite

show abstract

Salt‐Assisted Synthesis of 2D Materials

Huang

Jin

et al. 2020

Adv Funct Materials

126

109

View full text Add to dashboard Cite

2D materials have demonstrated good chemical, optical, electrical, and magnetic characteristics, and offer great potential in numerous applications. Corresponding synthesis technologies of 2D materials that are highquality, high-yield, low-cost, and time-saving are highly desired. Salt-assisted methods are emerging technologies that can meet these requirements for the fabrication of 2D materials. Herein, the recent process for the salt-assisted synthesis of 2D materials and their typical applications are summarized. First, the properties of salt crystals and molten salts are briefly introduced, and then some examples of 2D materials synthesis with the assistance of salt as well as their representative applications are presented. The underlying mechanisms of salts with different states on the formation of 2D morphology are discussed to aid in the rational design of synthetic route of 2D materials. At last, the challenges and future perspectives for salt-assisted methods are briefly described. This review provides guidance for the controllable synthesis of 2D materials based on the salt-assisted approaches.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adfm.201908486.MoO 3 , and LaNb 2 O 7 ), [14][15][16] layered double hydroxides (LDHs, e.g., Mg 6 Al 2 (OH) 16 CO 3 •4H 2 O), [17] hexagonal-boron nitride (h-BN), [2,18] transition metal halides (such as MoCl 2 and CrCl 3 ), [19] black phosphorus, [20] graphitic carbon nitride (g-C 3 N 4 ), [5] MXene (such as Ti 2 C and Ti 3 CN), [21][22][23][24][25] and clays (for instance, [(Mg 3 )(Si 2 O 5 ) 2 (OH) 2 ] and [(Al 2 )(Si 3 Al) O 10 (OH) 2 ]K). [19] Notably, many nonlayered structure species can also form 2D morphology with specific synthetic methods, largely expanding the 2D family (such as hexagonal-MoO 3 (h-MoO 3 ), hexagonal-WO 3 (h-WO 3 ), [15] transition metal nitrides (TMNs), [26,27] and transition metal phosphides (TMPs)). [28] To exploit the applications of 2D materials, the development of a synthetic method should be prioritized. Currently, synthesis processes of 2D materials could be divided into two categories, naming the top-down and bottom-up approaches. [29][30][31] Generally, exfoliation is the most common top-down method to produce monolayer or few-layer 2D materials. [19,32] Graphene was first prepared by mechanical exfoliation of highly oriented pyrolytic graphite with sellotape in 2004. [33] The exfoliation can weaken the interlayer Van der Waals force for bulk materials with layered crystal structures while maintain the covalent bonding in plane to produce monolayer or few-layer nanosheets. Although the productivity based on this method is limited due to the low efficiency, the exfoliation approach provides a new synthesis methodology for 2D materials. A series of studies on liquid exfoliation have been conducted by Coleman and co-workers. [19,34,35] By sonicating the bulk material in an appropriate solvent with similar interface energy, 2D material ink can be prepared. After the liq...

show abstract

Modification Strategies of Layered Double Hydroxides for Superior Supercapacitors

Zhang

Cao

Zhang

et al. 2022

Adv Energy and Sustain Res

View full text Add to dashboard Cite

Layered double hydroxides (LDHs), as classic 2D materials, have received worldwide attention in electrochemical energy storage devices due to its superior ion insertion rate and ultrahigh specific capacitance. However, the poor conductivity, severe aggregation limited capacitance, and unsatisfied internal stability have become the main factors hinder its further development as the electrode of supercapacitor. In recent years, various strategies on the modification of the LDHs’ structure, composition, properties, and fabrication have been demonstrated to effectively improve their electrochemical performance, and fruitful achievements have been made. However, there is a lack of systematic summary on the functional mechanisms and effects of various modification strategies. Herein, this review gives a comprehensive introduction of the modification strategies based on LDHs for superior supercapacitor, including active metal ions adjustment, intercalated ions adjustment, morphology optimization, conductivity enhancement and internal stability enhancement. Particularly, an in‐depth and fundamental understanding on the effects and mechanisms of modification on LDHs’ electrochemical properties and performance. Furthermore, the general performance metrics of above strategies, the potential directions and perspectives for further research are proposed.

show abstract

Acetate anion-intercalated nickel-cobalt layered double hydroxide nanosheets supported on Ni foam for high-performance supercapacitors with excellent long-term cycling stability

Cited by 132 publications

References 70 publications

Multi‐Anion Intercalated Layered Double Hydroxide Nanosheet‐Assembled Hollow Nanoprisms with Improved Pseudocapacitive and Electrocatalytic Properties

Multi‐Anion Intercalated Layered Double Hydroxide Nanosheet‐Assembled Hollow Nanoprisms with Improved Pseudocapacitive and Electrocatalytic Properties

Salt‐Assisted Synthesis of 2D Materials

Modification Strategies of Layered Double Hydroxides for Superior Supercapacitors

Contact Info

Product

Resources

About