In-situ growth of hollow NiCo layered double hydroxide on carbon substrate for flexible supercapacitor

Xuan, Xiaoyang; Qian, Min; Han, Lu; Wan, Lijia; Li, Yuquan; Lü, Ting; Pan, Likun; Niu, Yueping; Gong, Shangqing

doi:10.1016/j.electacta.2019.134710

Cited by 112 publications

(46 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although the area of the CV curve gradually increased with increasing scan rate, the curve shapes remained almost unchanged. The stable voltage window of the LNF‐0.1//LNF‐0.1 flexible device was 2 V, which was much higher than those flexible supercapacitors reported as follows: 1.7 V for VO 2 @PCNFs// PCNFs (Na 2 SO 4 ), [14] 1.8 V for CNO‐ZnO//ZnO (KOH), [15] 1.7 V for MnO 2 //FeSe 2 (LiCl), [16] 1.6 V for CuCo 2 O 4 @Ni(OH) 2 /CF//AC/CFC (KOH), [17] 1.6 V for Zn 0.76 Co 0.24 S/NiCo 2 S 4 //AC ( KOH), [18] and 1.6 V for H‐NiCo LDH@ACC//AC (KOH) [19] …”

Section: Resultsmentioning

confidence: 99%

“…The stable voltage window of the LNF-0.1//LNF-0.1 flexible device was 2V ,w hich was much higher than those flexible supercapacitors reported as follows:1 .7 Vf or VO 2 @PCNFs// PCNFs (Na 2 SO 4 ), [14] 1.8 Vf or CNO-ZnO//ZnO (KOH), [15] 1.7 Vf or MnO 2 // FeSe 2 (LiCl), [16] 1.6 Vf or CuCo 2 O 4 @Ni(OH) 2 /CF//AC/CFC (KOH), [17] 1.6 Vf or Zn 0.76 Co 0.24 S/NiCo 2 S 4 //AC (K OH), [18] and 1.6 Vf or H-NiCo LDH@ACC//AC (KOH). [19] The electrochemical property of the LNF-0.1//LNF-0.1 flexible devicew as explored by galvanostatic chargea nd discharge tests. As shown in Figure 7b,t he GCD curveso ft his device at different current densities were somewhat similar, indicating a high coulomb efficiency.T he specific capacitances of the LNF-0.1//LNF-0.1 flexible device based on the area of the active electrode were calculated at differentc urrent densities (Figure 7c).…”

Section: Electrochemical Performanceo Fflexible Devicementioning

confidence: 99%

See 1 more Smart Citation

The Application of a Y‐Modified Lanthanum Zirconate Flexible Thin Film for a High‐Performance Flexible Supercapacitor

Cao

Tang

Han

et al. 2020

Chemistry A European J

View full text Add to dashboard Cite

With the rapid developmento fw earable electronics devices, there is increasing demandf or the development of new flexiblee nergy storaged evices with high security, and this has become ah ot research topic. Although flexible supercapacitors are considered to be high-performance energy-storage equipment because of their fast charging/ discharging ability,long cycle life, good reliability,wide operating temperature range, and so on, there are still many drawbacks that need to be overcome. Herein, the La 2 Zr 2 O 7 (LZO) thin film is synthesized as an ew energy-storage material by using af acile electrospinning method and calcination at low temperature. In addition, the mechanism of producing the flexibility of this film is determined by TG, IR, and XRD analyses. As previous studies have suggested that the charges torage of the LZO film can be attributed to the mechanism of oxygeni ntercalation, the Yelementi sd oped into the LZO film to increaset he concentration of oxygen vacancies. The changes in structurala nd electrochemical properties of La 2 Y x Zr 2Àx O 3 (0 x 0.5) nanofibers (LNF-x) with increasing Yc ontent are studiedc arefully to obtain the best doping sample. The LNF-0.1 sample shows the highest areal capacitance of 605.3 mF cm À2 at 2mAcm À2 ,s oasymmetricalf lexible device is fabricated with LNF-0.1 electrodes. This device has ah igh energy density (76.7 mWhcm À2 at 2mWcm À2), good cycling stability, and excellent mechanical flexibility.T his study thus provides an ew research trend for portableand wearable electronics.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Electrochemical Performanceo Fflexible Devicementioning

confidence: 99%

The Application of a Y‐Modified Lanthanum Zirconate Flexible Thin Film for a High‐Performance Flexible Supercapacitor

Cao

Tang

Han

et al. 2020

Chemistry A European J

View full text Add to dashboard Cite

show abstract

“…Owing to the presence of abundant active sites and layered structure, the expected redox reaction incorporated short diffusion lengths of ions and electrons are affiliated with LDH, making it a potential anode for LIBs. However, the poor conductivity and serious aggregation of LDH nanosheets restricts its lithium storage performance (Xuan et al, 2019 ). Based on many cases, one of the effective strategies is to modify LDHs with rational carbon materials coatings enabling the improved conductivity and expected electrochemical properties, such as aerogel, graphene nanosheets, and carbon nanotubes (Gao et al, 2011 ; Yang et al, 2013 ; Song et al, 2017 ).…”

Section: Introductionmentioning

confidence: 99%

Template-Sacrificing Synthesis of Ni-Co Layered Double Hydroxides Polyhedron as Advanced Anode for Lithium Ions Battery

2020

Front. Chem.

View full text Add to dashboard Cite

The novel hollowed Ni-Co layered double hydroxide polyhedron (H-(Ni, Co)-LDHP) is synthesized via a template-sacrificing approach using ZIF-67 as template. The morphology, crystallinity, porous texture, and chemical state of H-(Ni, Co)-LDHP are examined. It demonstrates that the H-(Ni, Co)-LDHP not only provides rich redox sites but also promotes the kinetics due to presence of numerous rational channels. As a result, the H-(Ni, Co)-LDHP manifests the desirable lithium ions storage performance when employed as anode. This study paves a new way for preparing hollowed nanostructure toward advanced electrochemical applications.

show abstract

“…better than most of nickel base electrodes in the literatures, such as NiO NSAs@Co3O4-NiO//AC (0.216 mWh cm −2 at 27.2 mW cm −2 ), 48 RGO (0.95 mWh cm −2 at 2.01 mW cm −2 ) 52 and H-NiCo LDH@ACC//AC (0.07 mWh cm −2 at 0.7 mW cm −2 ). 53 Besides, the mass power density and energy density are also computed ( Figure S6b), which also demonstrating competitive performance in a number of electrodes that have been reported.…”

Section: Electrochemical Behavior Of Nvc-18ov//ac Asymmetric Supermentioning

confidence: 61%

“…7f in the form of a Ragone plot. It can be seen that the energy density of NVC‐1.8Ov//AC ASC decreased from 0.471 to 0.191 mWh cm −2 when the power density increased from 9.319 to 37.303 mW cm −2 , which much better than most of nickel base electrodes in the literatures, such as NiO NSAs@Co3O4‐NiO//AC (0.216 mWh cm −2 at 27.2 mW cm −2 ), 48 NiCo 2 S 4 @Ni‐Mn LDH/GS//VN/GS (0.156 mWh cm −2 at 3.76 mW cm −2 ), 49 CuNi‐hybrid/Cu//AC (0.42 mWh cm −2 at 2.297 mW cm −2 ), 50 Co 3 S 4 @Ni 3 S 4 //PC (0.19 mWh cm −2 at 1.72 mW cm −2 ), 51 Ni(OH) 2 ‐Cu//RGO (0.95 mWh cm −2 at 2.01 mW cm −2 ) 52 and H‐NiCo LDH@ACC//AC (0.07 mWh cm −2 at 0.7 mW cm −2 ) 53 . Besides, the mass power density and energy density are also computed (Figure S6b), which also demonstrating competitive performance in a number of electrodes that have been reported.…”

Section: Resultsmentioning

confidence: 99%

Oxygen‐vacancy‐rich hydrated bimetallic chloride for supercapacitor cathode with remarkable enhanced performance

2020

View full text Add to dashboard Cite

Summary In this study, a series of nickel/vanadium composites were acquired via a simple in situ growth strategy with the sodium chloride as a regulator. The phase, component, and electrochemical energy storage behavior of the as‐prepared electrodes were investigated. Thanks to the addition of sodium chloride for the accession of oxygen vacancy, the prepared composite electrodes show excellent supercapacitor behavior. The resultant NVC‐1.8Ov electrode demonstrates a impressive specific capacitance of 9.41 F cm−2 at a current of 10 mA cm−2, which is about 1.5 times than the NVC electrode. After 5000 charge‐discharge cycles under a current of 40 mA cm−2, the retained 75.7% of its initial capacitance indicate a good cyclic stability. In addition, the NVC‐1.8Ov and activated carbon (AC) was used to assemble NVC‐1.8Ov//AC asymmetric supercapacitor, which deliver a maximum energy density of 0.471 mWh cm−2 at a power density of 9.319 mW cm−2. This work provides a new and simple strategy for the preparation of high specific capacitance of asymmetric supercapacitor positive electrode.

show abstract

In-situ growth of hollow NiCo layered double hydroxide on carbon substrate for flexible supercapacitor

Cited by 112 publications

References 57 publications

The Application of a Y‐Modified Lanthanum Zirconate Flexible Thin Film for a High‐Performance Flexible Supercapacitor

The Application of a Y‐Modified Lanthanum Zirconate Flexible Thin Film for a High‐Performance Flexible Supercapacitor

Template-Sacrificing Synthesis of Ni-Co Layered Double Hydroxides Polyhedron as Advanced Anode for Lithium Ions Battery

Oxygen‐vacancy‐rich hydrated bimetallic chloride for supercapacitor cathode with remarkable enhanced performance

Contact Info

Product

Resources

About