3D nickel-cobalt phosphide heterostructure for high-performance solid-state hybrid supercapacitors

He, Shixue; Li, Zhiwei; Mi, Hongyu; Ji, Chenchen; Guo, Fengjiao; Zhang, Xiaogang; Li, Zhan; Du, Qian; Qiu, Jieshan

doi:10.1016/j.jpowsour.2020.228324

Cited by 102 publications

(46 citation statements)

References 63 publications

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“…71–2336), respectively. [ 37,38 ] It confirms the partial phase transformation of the NiCo–MOF after the controlled phosphorization, indicating the formation of the heterostructured NiCoP–MOF with a hybrid crystalline feature. The phase structures of Ni 2 P–MOF and Co 2 P–MOF hybrids are also proved by XRD patterns (Figure S3, Supporting Information).…”

Section: Resultsmentioning

confidence: 65%

“…The lattice fringes with interplanar distances of 0.22 and 0.20 nm are observed in Figure 2b, which can be ascribed to the (111) and (201) facets of the NiCoP phase in the NiCoP–MOF hybrid (Figure 2b,c), respectively. [ 37,38 ] Notably, the lattice fringes of the NiCoP phase can be detected in pore regions, validating the existence of the phosphide phase with good crystallinity again. The selected area electron diffraction (SAED) pattern (Figure 2d) shows the diffraction rings corresponding to the (111) and (201) planes of the NiCoP, which reveals the polycrystalline nature of the NiCoP in the resultant NiCoP–MOF.…”

Section: Resultsmentioning

confidence: 70%

“…For the device tested in a two-electrode setup, the optimal mass ratio of active materials on the cathode and anode was determined by charge conservation according to the following equation: [38,69] m m…”

Section: Methodsmentioning

confidence: 99%

“…For the device tested in a two‐electrode setup, the optimal mass ratio of active materials on the cathode and anode was determined by charge conservation according to the following equation: [ 38,69 ]

\begin{matrix} \frac{m_{+}}{m_{-}} = \frac{Q_{normalg -}}{Q_{normalg +}} \end{matrix}

where m ( g ) is the mass of the active material on the WE, and Q g (C g −1 ) is the gravimetric capacity obtained by Equation (). The optimal mass ratio for the AC to NiCoP–MOF samples in the device was 3.12.…”

Section: Methodsmentioning

confidence: 99%

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Design and Fabrication of Hierarchical NiCoP–MOF Heterostructure with Enhanced Pseudocapacitive Properties

Guo

Yang

et al. 2021

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118

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Section: Resultsmentioning

confidence: 65%

Section: Resultsmentioning

confidence: 70%

Section: Methodsmentioning

confidence: 99%

\begin{matrix} \frac{m_{+}}{m_{-}} = \frac{Q_{normalg -}}{Q_{normalg +}} \end{matrix}

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Design and Fabrication of Hierarchical NiCoP–MOF Heterostructure with Enhanced Pseudocapacitive Properties

Guo

Yang

et al. 2021

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118

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“…The hybrid device exhibited a specific capacitance of 136 F/g at 1 A/g with a wide potential window of 1.6 V. The hybrid device delivered maximum energy and power density of 48.4 Wh/kg and 13,000 W/kg, respectively. Further, He et al [100] reported three-dimensional nickel-cobalt phosphide porous nanoplates for solid-state hybrid supercapacitors with enhanced performance. With NiCoP and AC electrodes, the HSSC device exhibits impressive maximum energy and power density of 30.2 Wh/kg, 12,620 W/kg, respectively.…”

Section: Hybrid Solid State Supercapacitors (Hssc's)mentioning

confidence: 99%

Hybrid solid state supercapacitors (HSSC’s) for high energy & power density: an overview

Patil¹,

Bhat²,

Teli³

et al. 2020

Eng. Sci.

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A hybrid supercapacitor (HSC) is a supercapacitor (SC) based on two different electrode materials. One electrode is based on battery type faradic reactions (also known as extrinsic pseudocapacitor), and the other is based on the electric double-layer capacitor (non-faradic, known as intrinsic pseudocapacitor). In HSC, generally negative electrode material includes carbonbased materials (such as activated carbon, carbon nanotubes (CNT's) and graphene), metal oxides (such as V2O5 and MoO3), and their composites, while positive electrode materials are Ni, Co-based, mixed metal oxide, binary metal-based, layered double hydroxide (LDH) based materials etc. The synergy between high conductivity, specific surface area of negative electrode and architectures, heterostructures of positive electrodes is used to improve the overall electrochemical performances of the HSC's device. In this review, the basic charge storing mechanisms, a method for determination of capacitive and diffusion-controlled contribution, are explained. This review highlights the importance of hybrid solid-state supercapacitors (HSSC's) as energy storage devices. Finally, recent advancement in the HSSC fields is discussed and will guide future work in the HSSC field.

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Quadrangular Prism Porous Shells Constructed by Parallelly Interconnected and Lattice‐Strained NiCoP Nanoflakes for Maximized Energy Storage

Zhou

Long

Wang

et al. 2022

Adv Materials Inter

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One of the challenges with pseudocapacitive energy storage is maximizing the utilization of active materials while assuring their cycling stability due to diffusion confinement and low electron transferability. Herein, a new insight into the design of architectures with combined advantages of ultrathin 2D materials’ oriented distribution and structural modulation at the atomic scale is proposed. Porous quadrangular prism shells (PQPSs) constructed by parallelly and interconnected lattice‐strained NiCoP nanoflakes are achieved via quadrangular prism‐assisted surface anisotropic growth, template removal, and ion exchange. An aqueous asymmetric supercapacitor with the NiCoP PQPSs and activated carbon (AC) delivers outstanding cycle stability with 103.1% capacity retention even after 30 000 cycles at 20 A g−1, much superior electrochemical performance over that reported for single‐metal phosphides. The NiCoP//AC exhibits a prominent high energy density of 47.7 Wh kg−1 at 800 W kg−1, superior over most state‐of‐the‐art devices. This is mainly attributed to the fact that the nanoflake‐built shells effectively avoid “dead volume,” thus providing abundant ion‐accessible active sites and straight ion transport channels as well as the lattice tensile strain demonstrated by geometrical phase analysis facilitates charge transportation. This work provides an innovative route to the controlled synthesis of space‐oriented phosphides’ arrays for improved energy storage.

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3D nickel-cobalt phosphide heterostructure for high-performance solid-state hybrid supercapacitors

Cited by 102 publications

References 63 publications

Design and Fabrication of Hierarchical NiCoP–MOF Heterostructure with Enhanced Pseudocapacitive Properties

Design and Fabrication of Hierarchical NiCoP–MOF Heterostructure with Enhanced Pseudocapacitive Properties

Hybrid solid state supercapacitors (HSSC’s) for high energy & power density: an overview

Quadrangular Prism Porous Shells Constructed by Parallelly Interconnected and Lattice‐Strained NiCoP Nanoflakes for Maximized Energy Storage

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