Hierarchical porous CoMn2O4 microspheres with sub-nanoparticles as advanced anode for high-performance lithium-ion batteries

Jiu, Hongfang; Ren, Na; Jiang, Liya; Zhang, Qing; Gao, Yulong; Meng, Yajuan; Zhang, Lixin

doi:10.1007/s10008-018-3987-y

Cited by 14 publications

(3 citation statements)

References 55 publications

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“…In the low wavenumber range, the peak at 646 cm -1 was assigned to stretching vibration peak of CoMn 2 O 4 . [11] The porosity of CoMn 2 O 4 /C HS and CoMn 2 O 4 was evaluated by N 2 adsorption/desorption isotherms (Figure S3b, Supporting Information). The surface area of CoMn 2 O 4 /C HS was 122 m 2 g -1 much higher than that of CoMn 2 O 4 (58 m 2 g -1 ), arising from the uniform dispersion of CoMn 2 O 4 nanosheets on both sides of carbon shells.…”

Section: Resultsmentioning

confidence: 99%

Sandwich‐Shell Structured CoMn₂O₄/C Hollow Nanospheres for Performance‐Enhanced Sodium‐Ion Hybrid Supercapacitor

Zhang

Yan

et al. 2022

Advanced Energy Materials

120

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With the rapid depletion of petroleum and coal resources, the utilization of clean and sustainable energy (e.g., solar, hydropower, wind, and geothermal energy) has become particularly important. However, solar and wind energy have many intrinsic drawbacks, such as intermittence and instability, limiting their direct use. Therefore, it is urgent to develop high-performance electrochemical energy storage (EES) system to realize energy transfer. [1] Also, both electric vehicles and portable electronic devices need EES. With their increasing importance and large-scale applications, EES devices such as sodiumion batteries (SIBs), lithium-ion batteries (LIBs), and supercapacitors are receiving considerable attention. [2] Batteries provide superior energy density to supercapacitors, but their power density is much lower than that of supercapacitors. Hybrid supercapacitors (HSCs), as emerging EES devices, are commonly assembled by redox-type electrode as anode and capacitive electrode as cathode. HSCs provide an opportunity to achieve relatively-high energy density with concurrently superior power density. However, different charge storage mechanism in anode and cathode leads to in the electrochemical reaction kinetics, hindering the development of HSCs. [3] Engineering of architecture and component is efficient to achieving performance-enhanced HSCs.Sodium-ion HSCs (Na-HSCs) have attracted numerous attention due to their resource abundance as well as wide operating voltage range. Although the size of Na + is obviously larger than that of Li + , its lower desolvation energy makes it possible to develop high-rate devices. In comparison with lithium-ion HSCs, Na-HSCs are still in their infancy. Considering economic profits and resource-rich sodium, Na-HSCs are promising. [4] In addition, Na-HSCs can provide relatively high-power density and outstanding rate capability compared with SIBs. [5] Nevertheless, their current performance is far from satisfying practical application. Therefore, various novel electrode materials have been designed in order to enhance their comprehensive performance. To match the cathode with rapid faradaic reactions, anode materials experiencing fast redox reactions are desired. The nanostructure engineering coupled with the Sodium hybrid supercapacitors (Na-HSCs) are regarded as one promising electrochemical energy storage device, because of the low price of sodium, prolonged life cycle, and high-energy/power density. Nonetheless, the imparity between the fast capacitive reactions at cathode and the sluggish Faradaic reactions at the anode leads to an imbalance in the electrochemical reaction kinetics, limiting the development of Na-HSCs. Therefore, it is urgent to develop suitable anode materials for performance-enhanced Na-HSCs. Herein, sandwich-shell-structured CoMn 2 O 4 /C hollow spheres are synthesized by a facile hydrothermal reaction and subsequent calcination, where mesoporous carbon hollow spheres (CHSs) serve as nonsacrificial hard templates. CHSs with numerous mesoporous channels...

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Section: Resultsmentioning

confidence: 99%

Sandwich‐Shell Structured CoMn₂O₄/C Hollow Nanospheres for Performance‐Enhanced Sodium‐Ion Hybrid Supercapacitor

Zhang

Yan

et al. 2022

Advanced Energy Materials

120

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“…[4][5][6][7] Among them, the supercapacitor has captured worldwide attention as a potential applicant for future power storage applications, including in telecommunication technology, power tools, hybrid energy sources, microchips, hydrogen fuel storage, etc., because of its high power density, flexibility, high power conversion rate, simple maintenance, longer life span, and environmentally friendly nature. 8,9 A supercapacitor is differentiated into two classes based on its electrical charge storage process: pseudocapacitors and electrical double-layer capacitors (EDLCs). 10 EDLCs store electric charge by non-faradaic desorption/adsorption of ions between the electrolyte interface-electrode, whereas in pseudocapacitors the energy storage happens through the Faradaic process over the electrolyte interface-electrode.…”

Section: Introductionmentioning

confidence: 99%

“…Lithium‐ion batteries and supercapacitors are the two major devices for the electric‐powered storage system in various fields 4‐7 . Among them, the supercapacitor has captured worldwide attention as a potential applicant for future power storage applications, including in telecommunication technology, power tools, hybrid energy sources, microchips, hydrogen fuel storage, etc., because of its high power density, flexibility, high power conversion rate, simple maintenance, longer life span, and environmentally friendly nature 8,9 . A supercapacitor is differentiated into two classes based on its electrical charge storage process: pseudocapacitors and electrical double‐layer capacitors (EDLCs) 10 .…”

Section: Introductionmentioning

confidence: 99%

KOH mediated hydrothermally synthesized hexagonal‐CoMn ₂ O ₄ for energy storage supercapacitor applications

Ramachandran

Mourad

Raji³

et al. 2022

Intl J of Energy Research

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In recent years, there has been much focus on how the structure and morphology of CoMn 2 O 4 materials influence their electrochemical performance.Herein we introduce a KOH-surfactant agent to form a hexagonal like-CoMn 2 O 4 via hydrothermal. The X-ray Rietveld refinement evidenced that spinel CoMn 2 O 4 with the tetragonal structured I 41/amd phase. Further, the chemical environment of this phase is identified using various techniques. Surface morphology studies revealed hexagonal-like features. Owing to its features, the material delivers an excellent capacitance of 638.8 F/g. CoMn 2 O 4 also shows attained columbic efficiency of 81% and retains a capacitance of 85% after 4000 charge-discharge cycles. The excellent cyclic stability and high performance are achieved due to the more active sites and convenient electronic transference route for the ions through an electrochemical process. The symmetrical two-electrode assembly has also been fabricated. Hence, we believed that the surfactant-KOH mediated hexagonal-like-CoMn 2 O 4 material should enhance the supercapacitor properties.

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Excellent Electrochemical Performance of Air Plasma‐Treated CoMn₂O₄ Electrode for Supercapacitors

K. C.,

K. A.

2024

ChemistrySelect

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Cobalt manganese oxide (CoMn2O4) material production and characterization are presented in this work in preparation for their possible application in supercapacitors. The synthesis process used is a top‐down solid‐state strategy that is both economical and environmentally benign. After 500 °C post‐calcination, phase purity is verified by X‐ray diffraction (XRD) analysis. In the CoMn2O4, significant metal oxide vibrational modes are shown by Fourier transform infrared spectroscopy (FTIR). Raman spectroscopy is used to characterize structure, through elemental color mapping, energy‐dispersive X‐ray spectroscopy (EDX), and field emission scanning electron microscopy (FE‐SEM), researchers analyze morphological characteristics. Cyclic voltammetry (CV) and galvanostatic charge–discharge (GCD) experiments distinctly demonstrate that plasma treatment enhances the material properties including intensity, bending vibrations, morphology, and capacitance. After being exposed to air plasma, the resultant CoMn2O4 shows a notable capacitance of 961 F/g at 0.5 mA/g in a 2 M KOH electrolyte. These findings together suggest that CoMn2O4 has potential as an electrode material for supercapacitor research.

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Hierarchical porous CoMn2O4 microspheres with sub-nanoparticles as advanced anode for high-performance lithium-ion batteries

Cited by 14 publications

References 55 publications

Sandwich‐Shell Structured CoMn₂O₄/C Hollow Nanospheres for Performance‐Enhanced Sodium‐Ion Hybrid Supercapacitor

Sandwich‐Shell Structured CoMn₂O₄/C Hollow Nanospheres for Performance‐Enhanced Sodium‐Ion Hybrid Supercapacitor

KOH mediated hydrothermally synthesized hexagonal‐CoMn ₂ O ₄ for energy storage supercapacitor applications

Excellent Electrochemical Performance of Air Plasma‐Treated CoMn₂O₄ Electrode for Supercapacitors

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Hierarchical porous CoMn2O4 microspheres with sub-nanoparticles as advanced anode for high-performance lithium-ion batteries

Cited by 14 publications

References 55 publications

Sandwich‐Shell Structured CoMn2O4/C Hollow Nanospheres for Performance‐Enhanced Sodium‐Ion Hybrid Supercapacitor

Sandwich‐Shell Structured CoMn2O4/C Hollow Nanospheres for Performance‐Enhanced Sodium‐Ion Hybrid Supercapacitor

KOH mediated hydrothermally synthesized hexagonal‐CoMn 2 O 4 for energy storage supercapacitor applications

Excellent Electrochemical Performance of Air Plasma‐Treated CoMn2O4 Electrode for Supercapacitors

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Sandwich‐Shell Structured CoMn₂O₄/C Hollow Nanospheres for Performance‐Enhanced Sodium‐Ion Hybrid Supercapacitor

Sandwich‐Shell Structured CoMn₂O₄/C Hollow Nanospheres for Performance‐Enhanced Sodium‐Ion Hybrid Supercapacitor

KOH mediated hydrothermally synthesized hexagonal‐CoMn ₂ O ₄ for energy storage supercapacitor applications

Excellent Electrochemical Performance of Air Plasma‐Treated CoMn₂O₄ Electrode for Supercapacitors