SrFe1-Zr O3-δ perovskite oxides as negative electrodes for supercapacitors

Qiao, Yin; Liu, Guanfu; Xu, Renhao; Hu, Ruiyang; Liu, Liyuan; Jiang, Guohua; Demir, Müslüm; Pian, Pian

doi:10.1016/j.electacta.2022.141527

Cited by 20 publications

(5 citation statements)

References 52 publications

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“…To compete with batteries in the future, hybrid supercapacitors will need significant breakthroughs in research to have enhanced energy storage capabilities. Such advances may come about through advancements in electrode materials [18,24,25], as pseudocapacitance electrode materials, hydroxides, and transition-metal oxides have attracted extensive research. This is because of the multiple valence states and unique crystal structures that enable rapid faradaic redox intercalation [55,65].…”

Section: Iron-based Materials For Supercapacitorsmentioning

confidence: 99%

“…As such, supercapacitors are ideal for energy storage in a variety of devices including portable electronics and industrial machinery. In supercapacitors, electrodes play a significant role in electrochemical properties because they are responsible for reversible adsorption/desorption or electrochemical reactions [18,24,25]. Recently, supercapacitors have attracted much attention worldwide because they have several benefits over conventional capacitors and batteries [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

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Recent Advances and Prospects of FeOOH-Based Electrode Materials for Supercapacitors

et al. 2023

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Supercapacitors (SCs) offer a potential replacement for traditional lithium-based batteries in energy-storage devices thanks to the increased power density and stable charge–discharge cycles, as well as negligible environmental impact. Given this, a vast array of materials has been explored for SCs devices. Among the materials, iron oxyhydroxide (FeOOH) has gained significant attention in SC devices, owing to its superior specific capacitance, stability, eco-friendliness, abundance, and affordability. However, FeOOH has certain limitations that impact its energy storage capabilities and thus implicate the need for optimizing its structural, crystal, electrical, and chemical properties. This review delves into the latest advancements in FeOOH-based materials for SCs, exploring factors that impact their electrochemical performance. To address the limitations of FeOOH’s materials, several strategies have been developed, which enhance the surface area and facilitate rapid electron transfer and ion diffusion. In this review, composite materials are also examined for their synergistic effects on supercapacitive performance. It investigates binary, ternary, and quaternary Fe-based hydroxides, as well as layered double hydroxides (LDHs). Promising results have been achieved with binder-free Fe-based binary LDH composites featuring unique architectures. Furthermore, the analysis of the asymmetric cell performance of FeOOH-based materials is discussed, demonstrating their potential exploitation for high energy-density SCs that could potentially provide an effective pathway in fabricating efficient, cost-effective, and practical energy storage systems for future exploitations in devices. This review provides up-to-date progress studies of novel FeOOH’s based electrodes for SCs applications.

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Section: Iron-based Materials For Supercapacitorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Recent Advances and Prospects of FeOOH-Based Electrode Materials for Supercapacitors

et al. 2023

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“…Based on the oxygen intercalation mechanism, in the charge/discharge process, the anion vacancies of oxides, including interstitial positions between lattice and oxygen defects in the lattice, can serve as charge storage sites . As the pseudocapacitance derives from reversible insertion and deinsertion of OH – ions, this oxide electrode can provide significantly broader potential windows of 1.8 V. In addition, numerous binary composite oxides possessing a similar perovskite structure, such as Sr 2 CoMo 1– x Ni x O 6−δ , BaMnO 3 , SrFe 1– x Zr x O 3−δ , and so on, also show high electrochemical performance according to this mechanism . As a result, these kinds of oxides can reinforce the energy storage performance of carbon materials and maintain high conductivity through combining with them. − Oliva et al added Ca 2.9 La 0.1 Co 4 O 9 (CaLaCo) particles with a microplate morphology into the graphene electrode to improve the capacitance.…”

Section: Introductionmentioning

confidence: 99%

CNT@SrTiO₃ Nanocomposites Synthesized by In Situ Reaction for a High-Performance Flexible Supercapacitor

Cao,

Li,

Zhong

et al. 2024

ACS Omega

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This study presents the in situ synthesis of CNT@ SrTiO 3 nanocomposite films for the development of highperformance flexible supercapacitors. The synthesis process involved the use of organic−inorganic hybrid polymers containing metal elements as precursors for thermal decomposition reaction under a reducing atmosphere. Due to the formation of chemical bonding between Ti elements and the CNTs, the interface between STO and CNT surface could provide additional active sites for ion transport and storage. Thereby, the incorporation of SrTiO 3 nanoparticles into CNTs enhanced the electrochemical performance of the resulting nanocomposite membranes. To further investigate the influence of STO content and synthesis temperature, we conducted a detailed analysis. The findings indicated that the CNT@STO film with 25% STO content, synthesized at 700 °C, and possessed optimal performance with an areal capacitance of 6682 mF•cm −2 at 5 mV•s −1 . Furthermore, a symmetrical flexible supercapacitor assembled by two CNT@STO-25 electrodes demonstrated strong application potential in wearable devices, owing to its long cycle life, excellent flexibility, and high energy density of 430.2 μWh•cm −2 (corresponding power density of 4.5 mW•cm −2 ). Based on these results, we believe that this study provides a fresh idea for the development of novel flexible energy storage materials.

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“…26−28 In our previous study, Zr-substituted SrFeO 3−δ perovskite has been prepared as a supercapacitor negative electrode material, and the SrFe 0.85 Zr 0.15 O 3−δ @CC electrode with a voltage window of −1.0 to −0.4 V exhibits a specific capacitance of 164 F g −1 at 0.5 A g −1 . 29 In previous studies, carbon materials were the most commonly used negative electrode materials, but their electrochemical performance is certainly limited. 30 It is quite necessary to develop new highperformance negative electrode materials to achieve the optimal electrochemical behavior of the device.…”

Section: Introductionmentioning

confidence: 99%

“…The iron-based materials typically have good electrochemical performance with a negative potential window . The iron-containing SrFeO 3−δ perovskite has been reported to possess many advantages such as high ion/electron conductivity, good thermodynamic stability, and low raw material cost. − In our previous study, Zr-substituted SrFeO 3−δ perovskite has been prepared as a supercapacitor negative electrode material, and the SrFe 0.85 Zr 0.15 O 3−δ @CC electrode with a voltage window of −1.0 to −0.4 V exhibits a specific capacitance of 164 F g –1 at 0.5 A g –1 . In previous studies, carbon materials were the most commonly used negative electrode materials, but their electrochemical performance is certainly limited .…”

Section: Introductionmentioning

confidence: 99%

Flexible All-Solid-State Asymmetric Supercapacitors Based on PPy-Decorated SrFeO_3−δ Perovskites on Carbon Cloth

Qiao,

He,

Zhou

et al. 2023

ACS Appl. Mater. Interfaces

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The defective structure and high oxygen vacancy concentration of SrFeO 3−δ perovskite enable fast ion-electron transport, but its low conductivity still hinders the high electrochemical performance. Herein, to enhance the conductivity of SrFeO 3−δ -based electrodes, polypyrrole-modified SrFeO 3−δ perovskite on carbon cloth (PPy@SFO@CC) has been successfully fabricated by electrodeposition of polypyrrole (PPy) on the surface of SFO@CC. The optimal PPy700@SFO@CC electrode exhibits a specific capacitance of 421 F g −1 at 1 A g −1 . It was found that the outside PPy layer not only accelerates the electron transport and ion diffusion but also creates more oxygen vacancies in SrFeO 3−δ , enhancing the charge storage performance significantly. Moreover, the NiCo 2 O 4 @CC//PPy700@SFO@CC device maintains a specific capacitance of 63.6% after 3000 cycles, which is ascribed to the weak adhesion forces between the active materials and carbon cloth. Finally, the all-solid-state flexible supercapacitor NiCo 2 O 4 @CC//PPy700@SFO@CC is constructed with PVA-KOH as the solid electrolyte, delivering an energy density of 16.9 W h kg −1 at a power density of 984 W kg −1 . The flexible supercapacitor retains 69% of its specific capacitance after 1000 bending and folding times, demonstrating a certain degree of foldability. The present study opens new avenues for perovskite oxide-based flexible all-solid-state supercapacitors.

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SrFe1-Zr O3-δ perovskite oxides as negative electrodes for supercapacitors

Cited by 20 publications

References 52 publications

Recent Advances and Prospects of FeOOH-Based Electrode Materials for Supercapacitors

Recent Advances and Prospects of FeOOH-Based Electrode Materials for Supercapacitors

CNT@SrTiO₃ Nanocomposites Synthesized by In Situ Reaction for a High-Performance Flexible Supercapacitor

Flexible All-Solid-State Asymmetric Supercapacitors Based on PPy-Decorated SrFeO_3−δ Perovskites on Carbon Cloth

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SrFe1-Zr O3-δ perovskite oxides as negative electrodes for supercapacitors

Cited by 20 publications

References 52 publications

Recent Advances and Prospects of FeOOH-Based Electrode Materials for Supercapacitors

Recent Advances and Prospects of FeOOH-Based Electrode Materials for Supercapacitors

CNT@SrTiO3 Nanocomposites Synthesized by In Situ Reaction for a High-Performance Flexible Supercapacitor

Flexible All-Solid-State Asymmetric Supercapacitors Based on PPy-Decorated SrFeO3−δ Perovskites on Carbon Cloth

Contact Info

Product

Resources

About

CNT@SrTiO₃ Nanocomposites Synthesized by In Situ Reaction for a High-Performance Flexible Supercapacitor

Flexible All-Solid-State Asymmetric Supercapacitors Based on PPy-Decorated SrFeO_3−δ Perovskites on Carbon Cloth