Exploring Fe redox enabled by kinetically stabilized interphase for rechargeable aluminum batteries

Yang, Hongxun; Wu, Feng; Liu, Wenhao; Wang, Xinran; Bai, Ying; Wu, Chuan

doi:10.1016/j.ensm.2022.06.041

Cited by 7 publications

(9 citation statements)

References 55 publications

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“…According to this method, the capacitance contribution can be determined as 37%, 48%, 50%, 57%, and 67% at 0.2, 0.4, 0.8, 1.6, and 3.2 mV s –1 (Figure f), respectively. With the increasing scan rate, the significance of diffusion cannot be ignored, although the contribution rate of capacitance enhanced gradually. − Thus, the decreasing resistance and Warburg factor validates the fast reaction kinetic of NiCoSe 2 @F-C controlled by diffusion and capacitance, which contributes to the high reversible capacity and outstanding ion-transport capability.…”

Section: Resultsmentioning

confidence: 79%

Synthesis Design of Bimetallic Selenide NiCoSe₂@F-Doped C with Core–Shell Structure as Cathode for Advanced Rechargeable Aluminum Batteries

Kang

Zhou

et al. 2022

ACS Appl. Energy Mater.

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Rechargeable aluminum batteries (RABs) have been considered as a potential candidate for next-generation energy storage systems because of their high security, abundant resources, and high specific capacity. However, the poor cycling performance and sluggish reaction kinetics hinder the practical application of RABs. In this paper, an electrode material of NiCo bimetallic selenide nanospheres embedded in fluorine-doped carbon (NiCoSe2@F-C) has been designed for enhancing electrochemical performance. NiCoSe2@F-C doping with heterogeneous elements presented a stable core–shell structure and large surface area, playing a significant role in improving the cycling ability, specific capacity, and electrochemical reaction kinetics for RABs. The RABs based on NiCoSe2@F-C cathode exhibit high reversible capacity (294 mAh g–1 at 0.5 A g–1) and excellent cycle performance (115 mAh g–1 at 1 A g–1 over 400 cycles). It is confirmed that the charge storage mechanism of the NiCoSe2@F-C electrode is the intercalation/deintercalation of AlCl4 – with the charge/discharge processes jointly controlled by capacitance and diffusion. This work provides an effective approach for further developing advanced cathodes of RABs with excellent electrochemical performance.

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Section: Resultsmentioning

confidence: 79%

Synthesis Design of Bimetallic Selenide NiCoSe₂@F-Doped C with Core–Shell Structure as Cathode for Advanced Rechargeable Aluminum Batteries

Kang

Zhou

et al. 2022

ACS Appl. Energy Mater.

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“…Besides, Fe III /Fe II redox has an extremely high potential versus Al at 1.8 V in metal chloride form. [ 17 ] The use of 1‐ethyl‐3‐methylimidazolium chloride (EMICl)‐FeCl 3 ionic liquid (IL) against Al anode has been suggested by Xue et al. [ 8 ] but the trial was not successful.…”

Section: Introductionmentioning

confidence: 99%

“…Besides, Fe III /Fe II redox has an extremely high potential versus Al at 1.8 V in metal chloride form. [17] The use of 1-ethyl-3-methylimidazolium chloride (EMICl)-FeCl 3 ionic liquid (IL) against Al anode has been suggested by Xue et al [8] but the trial was not successful. The concept is later successfully embodied in redox flow battery by Zhang et al [9] which integrates two sets of ionic liquid analoges (metal chloride + urea) as catholyte (Fe) and anolyte (Al).…”

Section: Introductionmentioning

confidence: 99%

Liquid‐State Cathode Enabling a High‐Voltage and Air‐Stable Fe‐Al Hybrid Battery

Yang

Liu

et al. 2023

Adv Funct Materials

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Aluminum (Al) is an ideal anode material in low‐cost battery system for energy storage, with high theoretical capacities. However, the sluggish Al3+‐involved kinetics challenges the selection of common cathode materials (Al3+ intercalation or conversion). Herein, a redox‐active Fe–Cl complex serves as the liquid‐state cathode to couple with a low‐cost Al anode, which synergizes the advantages of redox flow batteries and Al rechargeable batteries. The interplay of Fe‐Cl coordinated formula and electrochemical properties are revealed for the first time. It is found that [Fe2Cl7]− molecule has a high voltage versus Al anode (1.3 V), and the novel Fe‐Al hybrid battery fulfills a capacity of 1.6 mAh cm−2 (20 Ah L−1) record high in a coin cell among Al‐based batteries. Furthermore, the energy efficiency, which is a vital parameter to evaluate the energy cost of the energy storage technology, reaches 85% (superior to most Al‐based batteries) and an average of 70% over ≈900 h cycling. Particularly, the unique air‐stable character enables normal operation of the battery assembled in ambient air. This work establishes a new application scenario for Al anode toward low‐cost large‐scale energy storage.

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“…First, among the transition metal chalcogenides, iron chalcogenides have garnered increasing attention due to sufficient reserves of iron and their environmental friendliness. 12 Second, tellurides have electronic conductivity levels higher than those of sulfides and selenides. And third, FeTe 2 has been intensively investigated as an electrode material for alkali metal-ion batteries but, to the best of our knowledge, has not yet been reported on for use with AIBs.…”

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confidence: 99%

Long life exceeding 10 000 cycles for aluminum-ion batteries based on an FeTe₂@GO composite as the cathode

Yang

Liu

et al. 2022

Chem. Commun.

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Exploring Fe redox enabled by kinetically stabilized interphase for rechargeable aluminum batteries

Cited by 7 publications

References 55 publications

Synthesis Design of Bimetallic Selenide NiCoSe₂@F-Doped C with Core–Shell Structure as Cathode for Advanced Rechargeable Aluminum Batteries

Synthesis Design of Bimetallic Selenide NiCoSe₂@F-Doped C with Core–Shell Structure as Cathode for Advanced Rechargeable Aluminum Batteries

Liquid‐State Cathode Enabling a High‐Voltage and Air‐Stable Fe‐Al Hybrid Battery

Long life exceeding 10 000 cycles for aluminum-ion batteries based on an FeTe₂@GO composite as the cathode

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Exploring Fe redox enabled by kinetically stabilized interphase for rechargeable aluminum batteries

Cited by 7 publications

References 55 publications

Synthesis Design of Bimetallic Selenide NiCoSe2@F-Doped C with Core–Shell Structure as Cathode for Advanced Rechargeable Aluminum Batteries

Synthesis Design of Bimetallic Selenide NiCoSe2@F-Doped C with Core–Shell Structure as Cathode for Advanced Rechargeable Aluminum Batteries

Liquid‐State Cathode Enabling a High‐Voltage and Air‐Stable Fe‐Al Hybrid Battery

Long life exceeding 10 000 cycles for aluminum-ion batteries based on an FeTe2@GO composite as the cathode

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Synthesis Design of Bimetallic Selenide NiCoSe₂@F-Doped C with Core–Shell Structure as Cathode for Advanced Rechargeable Aluminum Batteries

Synthesis Design of Bimetallic Selenide NiCoSe₂@F-Doped C with Core–Shell Structure as Cathode for Advanced Rechargeable Aluminum Batteries

Long life exceeding 10 000 cycles for aluminum-ion batteries based on an FeTe₂@GO composite as the cathode