Uniform carbon coating drastically enhances the electrochemical performance of a Fe3O4 electrode for alkaline nickel–iron rechargeable batteries

Tang, Hongwei; Sun, Zisheng; Chang, Kun; Hou, Yaolin; Li, Bao; Hou, Yan; Chang, Zhaorong

doi:10.1016/j.ijhydene.2019.07.132

Cited by 5 publications

(4 citation statements)

References 44 publications

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“…The intercept of the data on the real axis represents the equivalent series total resistance (Rs) (inherent resistance of the active material, the contact resistance between the active material and the current collector, and ionic resistance of the electrolyte). For the semicircle, the diameter represents the charge transfer resistance of the electrodes (Rct), CPE is a double layer capacitance, and W represents the Warburg impedance ( Tang et al., 2019 ). It is found that Rct of the Fe 3 O 4 and CFFF electrodes trend as follows: Fe 3 O 4 (1.72 Ω⋅cm 2 ) > CFFF-700 (1.02 Ω⋅cm 2 ) > CFFF-500 (0.94 Ω⋅cm 2 ) > CFFF-600 (0.70 Ω⋅cm 2 ) > CFFF-650 (0.68 Ω⋅cm 2 ).…”

Section: Resultsmentioning

confidence: 99%

High-capacity and high-rate Ni-Fe batteries based on mesostructured quaternary carbon/Fe/FeO/Fe3O4 hybrid material

et al. 2021

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Summary The Ni-Fe battery is a promising alternative to lithium ion batteries due to its long life, high reliability, and eco-friendly characteristics. However, passivation and self-discharge of the iron anode are the two main issues. Here, we demonstrate that controlling the valence state of the iron and coupling with carbon can solve these problems. We develop a mesostructured carbon/Fe/FeO/Fe 3 O 4 hybrid by a one-step solid-state reaction. Experimental evidence reveals that the optimized system with three valence states of iron facilitates the redox kinetics, while the carbon layers can effectively enhance the charge transfer and suppress self-discharge. The hybrid anode exhibits high specific capacity of 604 mAh⋅g −1 at 1 A⋅g −1 and high cyclic stability. A Ni-Fe button battery is fabricated using the hybrid anode exhibits specific device energy of 127 Wh⋅kg −1 at a power density of 0.58 kW⋅kg −1 and maintains good capacity retention (90%) and coulombic efficiency (98.5%).

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Section: Resultsmentioning

confidence: 99%

High-capacity and high-rate Ni-Fe batteries based on mesostructured quaternary carbon/Fe/FeO/Fe3O4 hybrid material

et al. 2021

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“…Hydrogen formation, on the other hand, is an unwanted reaction that causes lower coulombic efficiency as the battery loses capacity when cycled further [21,40]. Simultaneously, this makes Fe-based aqueous batteries high-maintenance with the constant replenishing of electrolytes due to water loss.…”

Section: Negative Half-cell Design Improvementsmentioning

confidence: 99%

“…This poor rate capability is caused by the carbon-shell restraining the Fe reaction kinetics. Moreover, despite the widespread use of the carbon-shell technique, many studies have demonstrated substandard performance, often due to significant capacity fading after only a few hundred cycles [21,76,84,103].…”

Section: Materials Compositesmentioning

confidence: 99%

“…Eliminating the drawbacks is challenging, but improvements using nanomaterials are gaining traction after achieving ultrafast charge and discharge rates by nearly a thousand-fold compared to commercial counterparts [16]. The work of Hongjie Dai's group [16] in 2012 was a catalyst for further improvements, which focused on understanding electrode performance [19,20], incorporating carbon on electrodes [21,22], and exploring additives [23,24]. Recent studies are also considering practical fabrication techniques that account for production costs.…”

Section: Introductionmentioning

confidence: 99%

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A Tale of Nickel-Iron Batteries: Its Resurgence in the Age of Modern Batteries

Abarro,

Gavan,

Loresca

et al. 2023

Batteries

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The nickel-iron (Ni-Fe) battery is a century-old technology that fell out of favor compared to modern batteries such as lead–acid and lithium-ion batteries. However, in the last decade, there has been a resurgence of interest because of its robustness and longevity, making it well-suited for niche applications, such as off-grid energy storage systems. Currently, extensive research is focused on addressing perennial issues such as iron passivation and hydrogen evolution reaction, which limit the battery’s energy density, cyclability, and rate performance. Despite efforts to modify electrode composition and morphology, these issues persist, warranting a deeper look at the development story of Ni-Fe battery improvements. In this review, the fundamental reaction mechanisms are comprehensively examined to understand the cause of persisting issues. The design improvements for both the anode and cathode of Ni-Fe batteries are discussed and summarized to identify the promising approach and provide insights on future research directions.

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Study on the in situ sulfidation and electrochemical performance of spherical nickel hydroxide

Kong

Tang

Wang³

et al. 2021

International Journal of Hydrogen Energy

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Uniform carbon coating drastically enhances the electrochemical performance of a Fe3O4 electrode for alkaline nickel–iron rechargeable batteries

Cited by 5 publications

References 44 publications

High-capacity and high-rate Ni-Fe batteries based on mesostructured quaternary carbon/Fe/FeO/Fe3O4 hybrid material

High-capacity and high-rate Ni-Fe batteries based on mesostructured quaternary carbon/Fe/FeO/Fe3O4 hybrid material

A Tale of Nickel-Iron Batteries: Its Resurgence in the Age of Modern Batteries

Study on the in situ sulfidation and electrochemical performance of spherical nickel hydroxide

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