Coupling effect between ultra-small Mn 3 O 4 nanoparticles and porous carbon microrods for hybrid supercapacitors

Wang, Rutao; Chen, Mingwei; Lang, Junwei; Zhang, Li; Yan, Xingbin

doi:10.1016/j.ensm.2016.10.002

Cited by 74 publications

(29 citation statements)

References 49 publications

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“…The actual capacity of Mn 3 O 4 was much smaller than its theoretical capacity (936 mA h g −1 ). 7,8 Moreover, the occurrence of disproportionation reaction in continuous charge/discharge process will lead to the mass decrease and poor stability of Mn 3 O 4 , which restrict the further application in supercapacitor. 9 In order to improve the conductivity of Mn 3 O 4 , combining Mn 3 O 4 with well-conductive materials (such as carbon materials) and utilizing their synergistic effect are effective strategies.…”

Section: Discussionmentioning

confidence: 99%

“…7,8 Moreover, the occurrence of disproportionation reaction in continuous charge/discharge process will lead to the mass decrease and poor stability of Mn 3 O 4 , which restrict the further application in supercapacitor. Trimanganese tetraoxide (Mn 3 O 4 ) has been considered to have promising prospects in supercapacitor due to its phase of hausmannite at room temperature and controlled microstructure.…”

Section: Introductionmentioning

confidence: 99%

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Mn₃ O₄ nanoparticles on activated carbonitride by soft chemical method for symmetric coin cell supercapacitors

et al. 2019

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Summary Trimanganese tetraoxide (Mn3O4) is limited in supercapacitor application due to its poor electrical conductivity and cycle stability. An effective strategy for improving its electrochemical performance is to be combined with good conductive materials, such as carbon materials. A facile method was developed to prepare a Mn3O4/activated carbonitride composite (MONC) as electrode material for supercapacitor. Mn3O4 particles with small size were homogeneously grown on the surface of activated carbonitride (NC). Notably, the addition of NC not only improves the electrical conductivity of Mn3O4 but also serves as a supporting matrix to maintain the stability of the composite. Electrochemical characterization results show that the specific capacitance of the composite can reach 180 F/g at a current density of 0.5 A/g, which is two times higher than that of Mn3O4 at the same current density. After 2000 cycles, the specific capacitance of MONC can be maintained at 80.2% of the initial specific capacitance. The symmetric coin cell (SCC) assembled by MONC as positive and negative electrodes shows large voltage window, excellent cycle stability, and superior energy/power densities. This work will be one of important references for the application of other transition metal oxides in energy storage devices.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mn₃ O₄ nanoparticles on activated carbonitride by soft chemical method for symmetric coin cell supercapacitors

et al. 2019

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“…In this context, a new system called “lithium‐ion capacitors (LICs)” is proposed in the beginning of 21st century, which is hybrid arrangement of a battery‐like (as anode) and supercapacitor‐like electrodes (as cathode) in organic electrolyte, heading to enhance energy and power densities . It has been emphasized that LIC bridges the low energy density supercapacitors (SCs) and low power Li‐ion batteries (LIBs) . Such an excellent performance of LIC in terms of energy and power density is assigned to the coupling effect from the rapid charging rate of capacitor‐type electrode, the large specific capacity of the battery‐like electrode, and the much wider working potential window of the organic electrolytes .…”

Section: Introductionmentioning

confidence: 98%

Metal–Organic Framework (MOF) Derived Electrodes with Robust and Fast Lithium Storage for Li‐Ion Hybrid Capacitors

Dubal

Jayaramulu

Sunil

et al. 2019

Adv Funct Materials

152

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Hybrid metal-organic frameworks (MOFs) demonstrate great promise as ideal electrode materials for energy-related applications. Herein, a wellorganized interleaved composite of graphene-like nanosheets embedded with MnO 2 nanoparticles (MnO 2 @C-NS) using a manganese-based MOF and employed as a promising anode material for Li-ion hybrid capacitor (LIHC) is engineered. This unique hybrid architecture shows intriguing electrochemical properties including high reversible specific capacity 1054 mAh g −1 (close to the theoretical capacity of MnO 2 , 1232 mAh g −1 ) at 0.1 A g −1 with remarkable rate capability and cyclic stability (90% over 1000 cycles). Such a remarkable performance may be assigned to the hierarchical porous ultrathin carbon nanosheets and tightly attached MnO 2 nanoparticles, which provide structural stability and low contact resistance during repetitive lithiation/delithiation processes. Moreover, a novel LIHC is assembled using a MnO 2 @C-NS anode and MOF derived ultrathin nanoporous carbon nanosheets (derived from other potassium-based MOFs) cathode materials. The LIHC full-cell delivers an ultrahigh specific energy of 166 Wh kg −1 at 550 W kg −1 and maintained to 49.2 Wh kg −1 even at high specific power of 3.5 kW kg −1 as well as long cycling stability (91% over 5000 cycles). This work opens new opportunities for designing advanced MOF derived electrodes for next-generation energy storage devices.and power density as well as long cycle life at low cost. [1][2][3][4] In this context, a new system called "lithium-ion capacitors (LICs)" is proposed in the beginning of 21st century, which is hybrid arrangement of a battery-like (as anode) and supercapacitor-like electrodes (as cathode) in organic electrolyte, heading to enhance energy and power densities. [5][6][7] It has been emphasized that LIC bridges the low energy density supercapacitors (SCs) and low power Li-ion batteries (LIBs). [8,9] Such an excellent performance of LIC in terms of energy and power density is assigned to the coupling effect from the rapid charging rate of capacitor-type electrode, the large specific capacity of the battery-like electrode, and the much wider working potential window of the organic electrolytes. [5,6] So far, several hybrid LIC designs have been realized, which are based on an activated carbon (AC) cathode combined with graphite, Li 4 Ti 5 O 12 (LTO), vanadates (Li 3 VO 4 , BiVO 4 , etc.), or metal oxides anodes. [10][11][12][13][14][15][16] However, the poor rate capability of graphite, the relatively high redox potential (≈1.5 V, vs Li/Li + ) of LTO, the poor electrical conductivity, and the cycle stability of metal oxides hamper their utilization in high performance LICs. Therefore, it is crucial to explore the novel anode and cathode materials with high rate capability, good cycle stability, and low redox potential to achieve further improvements for hybrid LICs.

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“…For example, Rutao Wang et al reported the well‐structured Mn 3 O 4 nanoparticles that were deposited on an N‐doped porous nanorod. Such microrod‐like products exhibited a high energy density and power density in a hybrid supercapacitor . Ting Xiong et al designed nanostructured MnO that was uniformly intercalated into reduced graphene nanosheets.…”

Section: Introductionmentioning

confidence: 99%

Spray‐Assisted Synthesis of MnO@C/Graphene Composites as Electrode Materials for Supercapacitors

et al. 2019

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The preparation of a composite consisting of amorphous carbon‐coated MnO nanoparticles deposited on graphene sheets (i.e., MnO@C/rGO) by a spray‐assisted method is reported. The MnO@C/rGO composite used as an active material for supercapacitors exhibits an excellent cyclability and a high specific capacitance in a two‐electrode system using 2 mol L−1 KOH aqueous solution as the electrolyte. High specific capacitances of 264 and 176 F g−1 at current densities of 1 and 20 A g−1, respectively, are achieved. A rate‐capability retention of about 67% is obtained when the current density increases from 1 to 20 A g−1, and the specific capacitance is retained at 78% after 10 000 cycles at a current density of 20 A g−1. The excellent electrochemical performance of the MnO@C/rGO is ascribed to the integration of graphene and the coating of amorphous carbon derived from glucose, which significantly improves the conductivity and alleviates the agglomeration of MnO. The unique architecture and good electrical conductivity increase the specific surface area and provide continuous electrical contact during the charge/discharge process. It is shown that carbon coating is an effective way to improve the electrochemical performance of metal oxides/graphene composites.

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Coupling effect between ultra-small Mn 3 O 4 nanoparticles and porous carbon microrods for hybrid supercapacitors

Cited by 74 publications

References 49 publications

Mn₃ O₄ nanoparticles on activated carbonitride by soft chemical method for symmetric coin cell supercapacitors

Mn₃ O₄ nanoparticles on activated carbonitride by soft chemical method for symmetric coin cell supercapacitors

Metal–Organic Framework (MOF) Derived Electrodes with Robust and Fast Lithium Storage for Li‐Ion Hybrid Capacitors

Spray‐Assisted Synthesis of MnO@C/Graphene Composites as Electrode Materials for Supercapacitors

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Coupling effect between ultra-small Mn 3 O 4 nanoparticles and porous carbon microrods for hybrid supercapacitors

Cited by 74 publications

References 49 publications

Mn3 O4 nanoparticles on activated carbonitride by soft chemical method for symmetric coin cell supercapacitors

Mn3 O4 nanoparticles on activated carbonitride by soft chemical method for symmetric coin cell supercapacitors

Metal–Organic Framework (MOF) Derived Electrodes with Robust and Fast Lithium Storage for Li‐Ion Hybrid Capacitors

Spray‐Assisted Synthesis of MnO@C/Graphene Composites as Electrode Materials for Supercapacitors

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Mn₃ O₄ nanoparticles on activated carbonitride by soft chemical method for symmetric coin cell supercapacitors

Mn₃ O₄ nanoparticles on activated carbonitride by soft chemical method for symmetric coin cell supercapacitors