Heterostructure engineering of MnO/TiO2 embedded in N-doped hollow carbon nanofibers for superior sodium storage

Zou, Degui; Liu, Jing; Zhou, Jingkai; Weng, Junying; Wang, Wenting; Liu, Xingyu; Zhou, Pengfei; Cong, Hailin

doi:10.1016/j.cej.2022.141252

Cited by 13 publications

(2 citation statements)

References 52 publications

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“…The GCD curves of the two electrodes at 2 A g −1 are listed in Figure S15. Likewise, in LIBs, the pseudocapacitive behavior of the MoO 3 @TiO 2 -2 was conducted corresponding to CV tests at various sweep rates, and the results establish a high pseudocapacitive contribution of Na + storage of electrode, confirming the excellent rate performance and superior cycling stability, 59 as displayed in Figure S12. The electrochemical performance of the MoO 3 @ TiO 2 -2 electrode as an anode material for SIBs is also compared with findings from other previously published studies involving MoO 3 or TiO 2 -based materials.…”

Section: ■ Results and Discussionmentioning

confidence: 71%

TiO₂-Coated MoO₃ Nanorods for Lithium/Sodium-Ion Storage

Al-Ansi,

Salah,

et al. 2023

ACS Appl. Nano Mater.

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Molybdenum trioxide (MoO3) shows promise as an anode material for Li/Na-ion batteries due to its low cost and high capacity. However, it suffers from poor cycling stability and volume expansion during charging and discharging, which affects its performance. To overcome these issues, researchers have developed a unique hybrid composite by coating MoO3 nanorods with TiO2, creating MoO3@TiO2 core–shell nanorods. The TiO2 coating significantly improves the composite’s cycling stability, rate capability, and overall electrochemical performance in Li/Na-ion batteries. The optimized electrode (MoO3@TiO2-2) achieves an impressive capacity of 1259.4 mA h g–1 after 500 cycles at 200 mA g–1 and a discharge capacity of 693.3 mA h g–1 after 1000 cycles at 2000 mA g–1 in lithium-ion batteries. In sodium-ion batteries, they show high reversible discharge capacities of 499.1 and 389.3 mA h g–1 after 500 cycles at 100 and 200 mA g–1, respectively. Moreover, even after 1200 cycles at 2 A g–1, the electrode retains a capacity of 300.2 mA h g–1. When combined with an NMC811 cathode in a full-cell Li-ion battery, the composite exhibits excellent cycling performance, lasting over 150 cycles with a capacity of 200 mA h g–1. This research has significant implications for the development of high-performance rechargeable batteries for various electrochemical energy applications.

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Section: ■ Results and Discussionmentioning

confidence: 71%

TiO₂-Coated MoO₃ Nanorods for Lithium/Sodium-Ion Storage

Al-Ansi,

Salah,

et al. 2023

ACS Appl. Nano Mater.

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“…In order to improve the cycling efficiency and rate capability of FeSe 2 , it is imperative to mitigate the volume expansion that occurs throughout the cycling process. The utilization of graphite materials in a composite treatment strategy represents a more viable and practical method. − For example, Dong et al reported that FeSe 2 nanoparticles were synthesized and subsequently encapsulated in carbon layers using hydrothermal and annealing techniques. This approach resulted in a significant improvement in the rate performance of FeSe 2 .…”

Section: Introductionmentioning

confidence: 99%

FeSe₂ Graphite Intercalation Compound as Anode Materials for Sodium Ion Batteries

Wang,

Zhang,

Zheng

et al. 2023

ACS Appl. Electron. Mater.

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A Novel Hierarchical Porous Covalent Organic Framework as Multi‐Active‐Center Anode for High‐Performance Sodium Ion Capacitors

Yuan,

Weng,

Sun

et al. 2024

Adv Funct Materials

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Sodium‐ion capacitors (SICs) by virtue of synergizing the merits of batteries and supercapacitors are promising in energy‐storage applications. However, they face significant challenges due to the mismatch between the sluggish Faradaic reaction anode and the swift non‐Faradaic cathode. Here, the in‐situ growth of a covalent organic framework (TA‐DH‐COF) with multiple active sites (C = O, C = N, and C = C) on graphene aerogels (GA) is reported to synthesize a novel TA‐DH‐COF/GA anode with hierarchical pores for SICs. Benefiting from the synergistic effect of molecular design and hierarchical structural engineering, the obtained TA‐DH‐COF/GA anode possesses abundant accessible active sites and efficient ions and electrons transport pathways. Combining theoretical calculations and spectroscopic studies, it is revealed that the Na‐storage mechanism and transportation kinetics of the TA‐DH‐COF/GA are based on the reversible Na+ coordination by abundant accessible active sites through a four‐stage process, featuring capacitive energy storage characteristics. When coupled with an activated carbon (AC) cathode, the TA‐DH‐COF/GA||AC SIC device displays ultrahigh energy/power densities (≈56 Wh kg−1 and ≈10 000 W kg−1) and long‐term cyclic stability with 88.8% capacity retention after 18 000 cycles, outperforming existing SIC counterparts. This study illuminates the potential of COF‐based materials in SICs to achieve high energy/power density.

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Heterostructure engineering of MnO/TiO2 embedded in N-doped hollow carbon nanofibers for superior sodium storage

Cited by 13 publications

References 52 publications

TiO₂-Coated MoO₃ Nanorods for Lithium/Sodium-Ion Storage

TiO₂-Coated MoO₃ Nanorods for Lithium/Sodium-Ion Storage

FeSe₂ Graphite Intercalation Compound as Anode Materials for Sodium Ion Batteries

A Novel Hierarchical Porous Covalent Organic Framework as Multi‐Active‐Center Anode for High‐Performance Sodium Ion Capacitors

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Heterostructure engineering of MnO/TiO2 embedded in N-doped hollow carbon nanofibers for superior sodium storage

Cited by 13 publications

References 52 publications

TiO2-Coated MoO3 Nanorods for Lithium/Sodium-Ion Storage

TiO2-Coated MoO3 Nanorods for Lithium/Sodium-Ion Storage

FeSe2 Graphite Intercalation Compound as Anode Materials for Sodium Ion Batteries

A Novel Hierarchical Porous Covalent Organic Framework as Multi‐Active‐Center Anode for High‐Performance Sodium Ion Capacitors

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Product

Resources

About

TiO₂-Coated MoO₃ Nanorods for Lithium/Sodium-Ion Storage

TiO₂-Coated MoO₃ Nanorods for Lithium/Sodium-Ion Storage

FeSe₂ Graphite Intercalation Compound as Anode Materials for Sodium Ion Batteries