Binary composites of nickel-manganese phosphates for supercapattery devices

Alzaid, Meshal; Iqbal, Muhammad Zahir; Alam, Shahid; Almoisheer, Noha; Afzal, Amir Muhammad; Aftab, Sikandar

doi:10.1016/j.est.2020.102020

Cited by 43 publications

(21 citation statements)

References 43 publications

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“…Xiao et al fabricated a Co–Ni phosphate//AC hybrid supercapacitor that presents a remarkable energy density of 33.29 Wh kg –1 at a power density of 0.15 kW kg –1 . Moreover, Alzaid et al fabricated supercapattery device of Ni 0.75 Mn 0.25 (PO 4 ) 2 //AC, which reveals exceptional results with high specific energy and specific power of 64.2 Wh kg –1 and 11 896 W kg –1 , respectively. Alam et al .…”

Section: Resultsmentioning

confidence: 99%

Fabrication of a High-Performance Hybrid Supercapacitor Based on Hydrothermally Synthesized Highly Stable Cobalt Manganese Phosphate Thin Films

et al. 2021

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In the present study, cobalt manganese phosphate (H-CMP-series) thin films with different compositions of Co/Mn are prepared on stainless steel (SS) substrate via a facile hydrothermal method and employed as binder-free cathode electrodes in a hybrid supercapacitor. The XRD study reveals a monoclinic crystal structure, and the FE-SEM analysis confirmed that H-CMP-series samples displayed a nano/microarchitecture (microflowers to nanoflakes) on the surface of SS substrate with excess available surfaces and unique sizes. Interestingly, the synergy between cobalt and manganese species in the cobalt manganese phosphate thin film electrode demonstrates a maximum specific capacitance of 571 F g–1 at a 2.2 A g–1 current density in 1 M KOH. Besides, the nano/microstructured cobalt manganese phosphate was able to maintain capacitance retention of 88% over 8000 charge–discharge cycles. More importantly, the aqueous/all-solid-state asymmetric supercapacitor manufactured with the cobalt manganese phosphate thin film as the cathode and reduced graphene oxide (rGO) as the anode displays a high operating potential window of 1.6 V. The aqueous asymmetric device exhibited a maximum specific capacitance of 128 F g–1 at a current density of 1 A g–1 with an energy density of 45.7 Wh kg–1 and a power density of 1.65 kW kg–1. In addition, the all-solid-state asymmetric supercapacitor device provides a high specific capacitance of 37 F g–1 at 1 A g–1 with 13.3 Wh kg–1 energy density and 1.64 kW kg–1 power density in a polymer gel (PVA-KOH) electrolyte. The long cyclic life of both devices (87 and 84%, respectively, after 6000 cycles) and practical demonstration of the solid-state device (lighting of a LED lamp) suggest another alternative choice for cathode materials to develop stable energy storage devices with high energy density. Furthermore, the aforementioned study paves the way to investigate phosphate-based materials as a new class of materials for supercapacitor applicability.

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Section: Resultsmentioning

confidence: 99%

Fabrication of a High-Performance Hybrid Supercapacitor Based on Hydrothermally Synthesized Highly Stable Cobalt Manganese Phosphate Thin Films

et al. 2021

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“…The hybrid device based on NiCoS demonstrates a maximum specific energy of 40 Wh kg −1 at specific power of 379 W kg −1 . Meanwhile, the metal phosphates like cobalt, manganese, and nickel phosphate have been found as high‐performance electrode materials in rechargeable batteries and SCs 37‐40 . Cobalt phosphate has been extensively utilized in rechargeable batteries and hybrid SCs owing to the excellent redox electrochemical activity of cobalt.…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of nickel‐manganese/polyaniline‐based ternary composites for high‐performance supercapattery devices

2021

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Summary The study divulges formation of nickel‐manganese phosphate and polyaniline (NiMn(PO4)2‐PANI)‐based ternary composites at different aspect ratios, synthesized via facile sonochemical method. The composite is utilized for high‐performance energy storage applications. The composite with 30 wt% PANI depicts the best electrochemical performance with maximum specific capacity (Qs) of 847 C g−1 at 0.5 A g−1 in three‐electrode assembly. The supercapattery device is assembled by utilizing NiMn(PO4)2‐PANI and activated carbon. The supercapattery demonstrates outstanding performance by delivering a remarkable specific energy of 71.3 Wh kg−1, and the maximum specific power is 12 686 W kg−1 and capacity retention of 97.6% after 5000 GCD series. Furthermore, the diffusive and capacitive mechanism is evaluated by applying Dunn's model. The b values are calculated to confirm the hybrid nature of the device. The study depicts the potentials of reported ternary composites as self‐supported electrode materials in the development of cost‐effective and efficient energy storage system.

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“…Therefore, it is highly beneficial to prepare a stable Ni–Mn phosphate composite (NMP), which may be the next-generation electrode material with enhanced performance for energy storage systems. , However, there are few publications on Ni–Mn phosphate with different morphologies for SCs. For instance, NiMn(PO 4 ) 2 nanoflakes and Ni 0.75 Mn 0.25 (PO 4 ) 2 nanoparticles have been synthesized through the sonochemical method by Alam et al and Alzaid et al However, further improvements are required to boost the specific capacity and long-term stability. Binder-free synthesis with controlled morphological structures for high surface areas could be a way to enhance the electrochemical performance of Ni–Mn phosphate composites …”

Section: Introductionmentioning

confidence: 99%

Urea-Assisted Nickel-Manganese Phosphate Composite Microarchitectures with Ultralong Lifecycle for Flexible Asymmetric Solid-State Supercapacitors: A Binder-Free Approach

et al. 2022

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The limited energy density and cyclability of supercapacitors are major roadblocks to their development as energy storage devices. To address these issues, a binder-free nickel−manganese (Ni−Mn) phosphate composite (NMP series) microarchitecture has been synthesized by the hydrothermal method on a nickel foam (NF) substrate using various urea dosages. Due to the influence of urea, microrod-/microplate-like morphologies of NMP series thin films evolved to micropetals. This study demonstrates a synergy between Ni and Mn metal ions and also the influence of different urea contents on the physicochemical properties of mesoporous NMP series thin films. Notably, the NMP-4 microarchitecture has a large surface area (7.5 m 2 g −1 ), which provides more electroactive sites in electrochemical measurements. Accordingly, in the NMP series electrodes, the NMP-4 thin film demonstrated high electrochemical properties (the maximum specific capacity was found to be 901 C/g at a 5 mV/s scan rate) and retained 127% capacity over 6000 cycles, indicating good durability with a well-preserved microstructure throughout the cycling. Furthermore, a flexible asymmetric solid-state (FASS) supercapacitor was designed utilizing NMP-4 and reduced graphene oxide (rGO) as a cathode and an anode, respectively, in the poly(vinyl alcohol)-KOH (PVA-KOH) gel electrolyte with an extended operational voltage of +1.8 V. This FASS device provides a high specific capacity (192 C/g at 0.6 A/g current density), supreme energy density (48.2 Wh kg −1 ) at a power density of 575 W kg −1 , and a desirable longevity of 108% over 5000 cycles. Moreover, the FASS device also demonstrated its practical applicability. The long-term stability suggests that the binder-free urea-assisted Ni−Mn phosphate composite is a good candidate for energy storage devices.

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Binary composites of nickel-manganese phosphates for supercapattery devices

Cited by 43 publications

References 43 publications

Fabrication of a High-Performance Hybrid Supercapacitor Based on Hydrothermally Synthesized Highly Stable Cobalt Manganese Phosphate Thin Films

Fabrication of a High-Performance Hybrid Supercapacitor Based on Hydrothermally Synthesized Highly Stable Cobalt Manganese Phosphate Thin Films

Green synthesis of nickel‐manganese/polyaniline‐based ternary composites for high‐performance supercapattery devices

Urea-Assisted Nickel-Manganese Phosphate Composite Microarchitectures with Ultralong Lifecycle for Flexible Asymmetric Solid-State Supercapacitors: A Binder-Free Approach

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