Controllable synthesis of Ni–Co–Mn multi-component metal oxides with various morphologies for high-performance flexible supercapacitors

He, Pingge; Huang, Qun; Huang, Baoyu; Chen, Tengfei

doi:10.1039/c7ra03018e

Cited by 43 publications

(20 citation statements)

References 38 publications

(37 reference statements)

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“…7−10 Based on the mechanism of energy storage, supercapacitors are categorized as pseudocapacitors and electric double-layer capacitors (EDLC). Pseudocapacitors involve reversible redox or faradic charge-transfer reactions and use transition-metal oxides 11,12 and conducting polymers as electrodes. 13,14 EDLC store energy by electrochemical charge accumulation occurring at the electrode/electrolyte interface with porous carbon materials as electrodes.…”

Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Mesoporous Carbon Spheres Using 3D Cubic Fe-KIT-6 by CVD Technique for the Application of Active Electrode Materials in Supercapacitors

2018

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Mesoporous carbon spheres (MCS-750, MCS-800, MCS-850, MCS-900, and MCS-950) have been synthesized by a facile strategy with low temperature and rapid chemical vapor deposition technique. The synthesized MCS possess relatively large surface area (570–670 m 2 g –1 ), good graphitization, remarkable porosity, and redox functionalities on the surface of the synthesized MCS. Combination of these structural and surface properties of the synthesized MCS as an electrode material (MCS-850) showed an excellent charge-storage capacity with a specific capacitance of 338 F/g at 1 mV/s, 217 F/g at 0.5 A/g. MCS-850 shows long-term cycling stability with capacitive retention of more than 96% after 2000 cycles in 6 M KOH electrolyte. In addition, a fabricated two-electrode symmetric cell obtained 86% retention after 2000 cycles. The two-electrode symmetric device exhibited a specific capacitance of 63 F/g at 5 mV/s with an energy density of 7.1 Wh/kg.

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Section: Introductionmentioning

confidence: 99%

Facile Synthesis of Mesoporous Carbon Spheres Using 3D Cubic Fe-KIT-6 by CVD Technique for the Application of Active Electrode Materials in Supercapacitors

2018

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“…44 − 46 The various oxidation states of Mn ions (Mn 2+ , Mn 3+ , and Mn 4+ ) in the cathode material could lead to high electrochemical activity for supercapacitor applications. 47 Thus, the high electrochemical performance of cathode-3 could be explained in terms of chemical states, in addition to morphological factors.…”

Section: Resultsmentioning

confidence: 99%

Simultaneous Electrodeposition of Ternary Metal Oxide Nanocomposites for High-Efficiency Supercapacitor Applications

Abebe

Ujihara

2022

ACS Omega

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Complex oxides and hydroxides of Ni, Co, and Mn from a precursor mixture were electrochemically deposited on both a cathode and an anode. On the Ni foam cathode, the complex metal hydroxides precipitated as nanolayers at −0.9 V. Simultaneously, the metal ions were oxidized and deposited as blocks on the Ni foam anode. While the concentrations of Ni(NO 3 ) 2 and Mn(NO 3 ) 2 were constant (80 mM for Ni 2+ and 40 mM for Mn 2+ , respectively), the concentration of Co(NO 3 ) 2 was varied from 20 to 120 mM, which affected the morphology and electrochemical properties of the electrode: a Co:Ni:Mn molar ratio resulted in the highest specific capacitance (at a scan rate of 5 mV s –1 , 1800 F g –1 for the cathode material and 720 F g –1 for the anode material). This cathode material was assembled into symmetric supercapacitors, which demonstrated an excellent energy density of 39 Wh kg –1 at a power density of 1300 W kg –1 and a high capacitance retention of 90% after 3000 charge/discharge cycles. This high electrochemical performance was attributed to the optimized ratio of metal oxides, and this simple preparation strategy can be applied to other nanocomposites of complex metal oxides/hydroxides with desired characteristics for various applications.

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“…In the past few years, binary metal oxides (denoted BMOs) are considered as one of the state-of-the-art electrocatalyst materials for various electrochemical applications [33,34]. Among the different categories of BMOs, transition-metal phosphates/ phosphides (denoted TMPs) have attracted increasing attention as a promising electrocatalyst [35][36][37].…”

Section: Inorganic Novel Nanomaterialsmentioning

confidence: 99%

The Novel Nanomaterials Based Biosensors and Their Applications

Şensoy¹,

Muti²

2021

Novel Nanomaterials

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Since the development of the first biosensor reported, biosensor has received considerable attention due to its high selectivity and sensitivity. Biosensors are highly pursued in order to meet the growing demands and challenges in a large number of analytic applications such as medical diagnosis, food safety control, environmental monitoring, or even military defense. Due to the unique physical, chemical, mechanical and electrical properties, nanomaterials have been widely investigated for their ability and used to fabricate sensors. High surface to volume ratio, good stability, excellent electrocatalytic properties of the nanomaterials plays an important role in the sensitive and selective detection of biomolecules. The synthesis of new nanomaterials with different properties is increasingly common in order to improve these counted properties of nanomaterials. This chapter gives an overview of the importance of the development of novel nanomaterials based biosensors technologies. The use of different funtionalized carbon nanomaterilas, metal oxide nanoparticles, metal nanoparticles, polymeric nanoparticles, quantum dots, graphene sheets and other novel nanomaterials in biosensor technology, and their innovations and advantages are discussed.

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Controllable synthesis of Ni–Co–Mn multi-component metal oxides with various morphologies for high-performance flexible supercapacitors

Abstract: Ni–Co–Mn multi-component metal oxides with various morphologies were controllably synthesized on carbon cloth for high-performance supercapacitor electrodes.

Cited by 43 publications

References 38 publications

Facile Synthesis of Mesoporous Carbon Spheres Using 3D Cubic Fe-KIT-6 by CVD Technique for the Application of Active Electrode Materials in Supercapacitors

Facile Synthesis of Mesoporous Carbon Spheres Using 3D Cubic Fe-KIT-6 by CVD Technique for the Application of Active Electrode Materials in Supercapacitors

Simultaneous Electrodeposition of Ternary Metal Oxide Nanocomposites for High-Efficiency Supercapacitor Applications

The Novel Nanomaterials Based Biosensors and Their Applications

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