Hierarchical mesoporous Ni-P@MnO2 composite for high performance supercapacitors

Li, Xudong; Ding, Rui; Shi, Wei; Xu, Qi; Luo, Wei; Jiang, Haxia; Yang, Zeng; Liu, Enhui

doi:10.1016/j.matlet.2016.10.021

Cited by 47 publications

(19 citation statements)

References 11 publications

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“…For example, white phosphorus has been used as the precursor in the solvothermal process to prepare Ni 2 P nanoparticles . NiP has been achieved by a facile solvothermal method, where NaH 2 PO 2 ·H 2 O and NiCl 2 ·6H 2 O are dissolved in DI water or DMF . The resultant metal phosphides vary in structures, ranging from NiP microspheres to NiP porous structure .…”

Section: Metal Phosphidesmentioning

confidence: 99%

“…NiP has been achieved by a facile solvothermal method, where NaH 2 PO 2 ·H 2 O and NiCl 2 ·6H 2 O are dissolved in DI water or DMF . The resultant metal phosphides vary in structures, ranging from NiP microspheres to NiP porous structure . Depending on the requirement for the type of electrode material, surfactants can be added into the solution for better control or adjustment in nanostructures/mesostructures.…”

Section: Metal Phosphidesmentioning

confidence: 99%

“…Transition metal phosphides, such as nickel and cobalt phosphides, exhibit superior redox activity together with the desired electrical conductivity, and therefore high theoretical energy storage capacity . They are naturally high abundance, and environment‐friendly . Therefore they received a high degree of attention as a class of pseudocapacitive materials.…”

Section: Metal Phosphidesmentioning

confidence: 99%

“…Li et al have reported a hierarchical mesoporous NiP@MnO 2 hybrid‐type electrode, developed by solvothermal formation of NiP microspheres and then post‐chemical deposition of MnO 2 nanoparticles to wrap up the NiP. The NiP@MnO 2 electrode, where NiP can react with OH − anions and MnO 2 can react with K + and Li + cations in the electrolyte of 6 M KOH and 0.7 M LiOH, achieved a much superior specific capacitance (1130 F g −1 at 1 A g −1 ) than NiP alone.…”

Section: Metal Phosphidesmentioning

confidence: 99%

“…Batteries, fuel cells, and supercapacitors are among the most effective and practically reliable technologies for electrochemical energy conversion and storage. In particular, high performing supercapacitors (SCs) have aroused considerable interest, due to their high power density, fast charge/discharge and long lifespan . For these apparent merits, they are finding applications ranging from portable devices to hybrid electric vehicles and large‐scale high power technologies.…”

Section: Introductionmentioning

confidence: 99%

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Metal Phosphides and Phosphates‐based Electrodes for Electrochemical Supercapacitors

Elshahawy

Guan

et al. 2017

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366

175

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Phosphorus compounds, such as metal phosphides and phosphates have shown excellent performances and great potential in electrochemical energy storage, which are demonstrated by research works published in recent years. Some of these metal phosphides and phosphates and their hybrids compare favorably with transition metal oxides/hydroxides, which have been studied extensively as a class of electrode materials for supercapacitor applications, where they have limitations in terms of electrical and ion conductivity and device stability. To be specific, metal phosphides have both metalloid characteristics and good electric conductivity. For metal phosphates, the open-framework structures with large channels and cavities endow them with good ion conductivity and charge storage capacity. In this review, we present the recent progress on metal phosphides and phosphates, by focusing on their advantages/disadvantages and potential applications as a new class of electrode materials in supercapacitors. The synthesis methods to prepare these metal phosphides/phosphates are looked into, together with the scientific insights involved, as they strongly affect the electrochemical energy storage performance. Particular attentions are paid to those hybrid-type materials, where strong synergistic effects exist. In the summary, the future perspectives and challenges for the metal phosphides, phosphates and hybrid-types are proposed and discussed.

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Section: Metal Phosphidesmentioning

confidence: 99%

Section: Metal Phosphidesmentioning

confidence: 99%

Section: Metal Phosphidesmentioning

confidence: 99%

Section: Metal Phosphidesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Metal Phosphides and Phosphates‐based Electrodes for Electrochemical Supercapacitors

Elshahawy

Guan

et al. 2017

Small

366

175

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Cactus‐Like NiCoP/NiCo‐OH 3D Architecture with Tunable Composition for High‐Performance Electrochemical Capacitors

Elshahawy

et al. 2018

Adv Funct Materials

292

191

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To effectively enhance the energy density and overall performance of electrochemical capacitors (ECs), a new strategy is demonstrated to increase both the intrinsic activity of the reaction sites and their density. Herein, nickel cobalt phosphides (NiCoP) with high activity and nickel cobalt hydroxides (NiCo-OH) with good stability are purposely combined in a hierarchical cactus-like structure. The hierarchical electrode integrates the advantages of 1D nanospines for effective charge transport, 2D nanoflakes for mechanical stability, and 3D carbon cloth substrate for flexibility. The NiCoP/ NiCo-OH 3D electrode delivers a high specific capacitance of ≈1100 F g −1 , which is around seven times higher than that of bare NiCo-OH. It also possesses ≈90% capacitance retention after 1000 charge-discharge cycles. An asymmetric supercapacitor composed of NiCoP/NiCo-OH cathode and metal-organic framework-derived porous carbon anode achieves a specific capacitance of ≈100 F g −1 , high energy density of ≈34 Wh kg −1 , and excellent cycling stability. The cactus-like NiCoP/NiCo-OH 3D electrode presents a great potential for ECs and is promising for other functional applications such as catalysts and batteries.

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Hierarchical NiS@CoS with Controllable Core‐Shell Structure by Two‐Step Strategy for Supercapacitor Electrodes

Miao

Zhang

Zhan

et al. 2019

Adv Materials Inter

110

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Constructing hierarchical core‐shell configuration from well‐known metal sulfides is one way to further tune and utilize unique species. Herein, a novel core‐shell structure is developed based on CoS deposited on NiS nanosheets, which involves hydrothermal and electrodeposition method. The micromorphology of the composite electrode can be optimized by adjusting the cycles of electrodeposition. Taking advantages of the highly conductive, open framework of the core‐shell nanolayer, the 5‐NiS@CoS electrode shows a specific capacitance of 1210 F g−1 at a current density of 1 A g−1 (retaining 82% from 1 to 10 A g−1, while NiS substrate is only 39%). The specific capacitance retention rate is 80.94% at 10 A g−1 after 2000 cycles (NiS substrate is 59.6%). Moreover, NiS@CoS//AC asymmetric supercapacitor device delivers an energy density of 24.1 Wh kg−1 at a power density of 752.15 W kg−1 and remarkable stability (over 80% retention after 5000 cycles). This work may prompt the exploration of the synthesis of inexpensive compounds incorporating highly reactive components for supercapacitors.

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Hierarchical mesoporous Ni-P@MnO2 composite for high performance supercapacitors

Cited by 47 publications

References 11 publications

Metal Phosphides and Phosphates‐based Electrodes for Electrochemical Supercapacitors

Metal Phosphides and Phosphates‐based Electrodes for Electrochemical Supercapacitors

Cactus‐Like NiCoP/NiCo‐OH 3D Architecture with Tunable Composition for High‐Performance Electrochemical Capacitors

Hierarchical NiS@CoS with Controllable Core‐Shell Structure by Two‐Step Strategy for Supercapacitor Electrodes

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