General Aspects and Fundamentals of Flow Batteries

Arenas, Luis F.; Walsh, Frank C.; León, Carlos Ponce de

doi:10.1002/9783527832767.ch4

Cited by 2 publications

(3 citation statements)

References 31 publications

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“…While, the reduction peak was occurring at À 0.530 V, which is due to Zn to Zn 2 + conversion. [27] Similarly, the oxidation and reduction peaks observed for pre-treated CF were À 0.021 V and À 0.042 V. From this curve, we obtained better quasi-reversibility for the prepared material. [28] We observed that the peak current ratio (i c /i a ) for the composite material is 1.07, dictating the high reversibility due to active redox sites.…”

Section: Mass Transfer Characteristicssupporting

confidence: 53%

“…From Figure 6a, it is observed that the oxidation peak corresponds to Zn 2+ to Zn has been observed at 0.021 V Ag/AgCl for the prepared composite coated CF. While, the reduction peak was occurring at −0.530 V, which is due to Zn to Zn 2+ conversion [27] . Similarly, the oxidation and reduction peaks observed for pre‐treated CF were −0.021 V and −0.042 V. From this curve, we obtained better quasi‐reversibility for the prepared material [28] .…”

Section: Resultsmentioning

confidence: 59%

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NiO/ZnO Composite Derived Metal‐Organic Framework as Advanced Electrode Materials for Zinc Hybrid Redox Flow Battery

Lakshmanan,

Janshirani,

Rengapillai

et al. 2023

ChemPhysChem

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NiO/ZnO composite derived metal‐organic framework (MOF) is used as to modify carbon felt (CF) via a conventional solid‐state reaction followed by ultrasonication. The prepared electrode material is used in zinc‐hybrid redox flow batteries (RFBs) due to their high redox activity of Zn2+/Zn. The electrochemical performance of composite modified CF and pre‐treated CF was studied by cyclic voltammetry (CV) in 0.5 M aqueous zinc chloride with 5 M potassium hydroxide solutions showed clear confirmation for enhanced electrocatalytic activity. The unique porous structure of NiO/ZnO‐derived MOF with increased surface area improves the battery behavior significantlyThe peak current ratio for the as‐prepared material is about 3 times higher than that of the pre‐treated CF due to more active sites. Zinc‐based RFB with modified CF electrode exhibited better electrochemical performance with voltage efficiency (VE, 88 %), which is higher than true redox flow batteries.

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Section: Mass Transfer Characteristicssupporting

confidence: 53%

Section: Resultsmentioning

confidence: 59%

NiO/ZnO Composite Derived Metal‐Organic Framework as Advanced Electrode Materials for Zinc Hybrid Redox Flow Battery

Lakshmanan,

Janshirani,

Rengapillai

et al. 2023

ChemPhysChem

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“…[ 6 ] The high solubility also benefits to increase the available energy densities and the output current would be controlled by the size of the electrode stacks in RFBs. [ 7 ] Of course, aqueous systems are advantageous in many aspects of: they are inexpensive, environmentally benign, and highly soluble rather than the use of organic liquid‐based RFBs. [ 8,9 ] As shown in Figure 1 a replacing or rebalancing negolytes and posolytes can be readily altered while maintaining infra‐tank and pump systems; such properties are well‐suited for stationary energy storage.…”

Section: Introductionmentioning

confidence: 99%

Full‐Hexacyanometallate Aqueous Redox Flow Batteries Exceeding 1.5 V in an Aqueous Solution

Jang

Kim

Jayasubramaniyan

et al. 2023

Advanced Energy Materials

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Aqueous redox flow batteries (RFBs) have attracted significant attention as energy storage systems by virtue of their inexpensive nature and long‐lasting features. Although all‐vanadium RFBs exhibit long lifetimes, the cost of vanadium resources fluctuates considerably, and is generally expensive. Iron–chromium RFBs take advantage of utilizing a low‐cost and large abundance of iron and chromite ore; however, the redox chemistry of CrII/III generally involves strong Jahn–Teller effects. Herein, this work introduces a new Cr‐based negolyte coordinated with strong‐field ligands capable of mitigating strong Jahn–Teller effects, thereby facilitating low redox potential, high stability, and rapid kinetics. The balanced full‐cell configuration features a stable lifetime of 500 cycles with energy density of 14 Wh L−1. With an excessive posolyte, the full‐cell can attain a high energy density of 38.6 Wh L−1 as a single electron redox process. Consequently, the proposed system opens new avenues for the development of high‐performance RFBs.

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General Aspects and Fundamentals of Flow Batteries

Cited by 2 publications

References 31 publications

NiO/ZnO Composite Derived Metal‐Organic Framework as Advanced Electrode Materials for Zinc Hybrid Redox Flow Battery

NiO/ZnO Composite Derived Metal‐Organic Framework as Advanced Electrode Materials for Zinc Hybrid Redox Flow Battery

Full‐Hexacyanometallate Aqueous Redox Flow Batteries Exceeding 1.5 V in an Aqueous Solution

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