Alkaline organic flow battery

Development of organic redox‐active materials

Furthermore, zinc–organic hybrid flow batteries could be engineered with high voltage. Moreover, pH-neutral or weak alkaline electrolyte (pH 7−10) should be most promising for future AORFBs, especially if the

Molecular Engineering of an Alkaline Naphthoquinone Flow Battery

Aqueous organic redox flow batteries (AORFBs) have recently gained significant attention as a potential candidate for grid-scale electrical energy storage. Successful implementation of this technology will require redox-active organic molecules with many desired properties. Here we introduce a naphthoquinone dimer, bislawsone, as the redox-active

3D modeling and simulation of an alkaline flow battery

A 3D-mathematical model in steady-state for an alkaline organic redox flow battery with an interdigitated channel is proposed based on the Nernst-Planck and Butler-Volmer theories, as well as the tertiary current distribution model. One of the main objectives of this study is considers the role of the inlet and outlet manifolds on the AORFB

Organic redox-active molecules for alkaline aqueous redox flow batteries

Aqueous redox flow batteries (ARFBs) have emerged as a promising technology for large-scale energy storage, enabling the efficient utilization of intermittent renewable energy sources.Recently, aqueous organic redox flow batteries (AORFBs) have garnered attention due to the metal-free composition of organic molecules, offering favorable characteristics like earth

Flow Batteries: Current Status and Trends | Chemical Reviews

Effective Enhancement of Energy Density of Zinc-Polyiodide Flow Batteries by Organic/Penta-iodide Complexation. ACS Applied Materials & Interfaces 2023, 15 (41), Mediated Alkaline Flow Batteries: From Fundamentals to Application. ACS Applied Energy Materials 2019, 2 (11),

Recent Progress in Organic Species for Redox Flow Batteries

The organic redox flow batteries (ORFBs) are generally divided into aqueous ORFBs and nonaqueous ORFBs. The amount and status of the research on the former is higher than the latter in that the aqueous RFB system has experienced significant development with inorganic RFBs since 1980s. Alkaline anthraquinone-based aqueous ORFBs. a) Cyclic

Organic electrolytes for aqueous organic flow batteries

Aqueous organic flow batteries are promising for large-scale energy storage. When paired with Fe(CN) 6 3−/4-at alkaline conditions, the battery delivered an open circuit voltage (OCV) over 1 V and a peak power density of 240 mW cm −2, with an extremely low capacity fade rate.

A redox-flow battery with an alloxazine-based organic

Redox-flow batteries with organic-based electrolytes hold many advantages over conventional-flow batteries. by replacing the carboxylic acid group with another alkaline-soluble hydroxyl group

On the path to aqueous organic redox flow batteries: Alizarin

An aqueous organic redox flow battery (AORFB) based on Alizarin Red S, 3,4-dihydroxy-9,10-anthraquinone-2-sulfonic acid (ARS) and potassium ferrocyanide (PF) was studied in alkaline medium. Charge-discharge processes and potential-current response behaviour in a full cell combining ARS, as the negolyte, and PF, as the posolyte, were investigated.

Sulfonated poly(ether-ether-ketone) membranes

These microporous membranes showed high ionic conductivity without compromising the selectivity toward redox-active species. The membranes enabled excellent performance in alkaline aqueous organic and zinc-iron flow

High-Performance Alkaline Organic Redox Flow

We propose a high-performance ARFB system utilizing 2-hydroxy-3-carboxy-1,4-naphthoquinone (2,3-HCNQ) and K 4 Fe (CN) 6 as the anolyte

On the path to aqueous organic redox flow batteries: Alizarin

An aqueous organic redox flow battery (AORFB) based on Alizarin Red S, 3,4-dihydroxy-9,10-anthraquinone-2-sulfonic acid (ARS) and potassium ferrocyanide (PF) was

Alkaline aqueous organic redox flow batteries of high energy

Such organic redox flow batteries (ORFBs) have more benefits than the metal-based RFBs [20], [21], [22]. First, the cost of both active species is generally cheaper. When NQ-S is dissolved into alkali electrolyte, such as KOH, –SO 3 Na group within NQ-S is substituted into –OH group by nucleophilic attack, and thus NQ-S is transformed

Perspectives on aqueous organic redox flow batteries

Recently, aqueous organic redox flow batteries (AORFBs), utilizing water-soluble organic molecules as redox-active species, have garnered widespread attention [8, 9]. The conversion between electrical and chemical energy in organic molecules often involves electron transfer at active centers such as oxygen, nitrogen, sulfur, or radicals, etc.

Long-Cycling Aqueous Organic Redox Flow Battery (AORFB)

Redox flow batteries (RFBs) are a viable technology to store renewable energy in the form of electricity that can be supplied to electricity grids. However, widespread implementation of traditional RFBs, such as vanadium and Zn–Br2 RFBs, is limited due to a number of challenges related to materials, including low abundance and high costs of redox

Crossover-free hydroxy-substituted quinone anolyte and

DOI: 10.1016/j.cattod.2020.12.012 Corpus ID: 234259719; Crossover-free hydroxy-substituted quinone anolyte and potassium ferrocyanide catholyte for aqueous alkaline organic redox flow battery

High‐Capacity Economically Viable Catholyte for Alkaline

Alkaline aqueous organic redox flow batteries (AORFB) show great potential as viable options for storing energy in commercial power grids. While there has been notable

Aqueous organic flow batteries for sustainable energy storage

Aqueous Organic Redox Flow Batteries (RFBs) have the potential to address the large-scale need for storing electrical energy from intermittent sources like solar- and wind-based generation. Aqueous alkaline organic RFBs are attractive due to the prospect of lowering the cost of the stack components by using stainless steel instead of the

Alkaline quinone flow battery | Science

We report an alkaline flow battery based on redox-active organic molecules that are composed entirely of Earth-abundant elements and are

Alkaline aqueous organic redox flow batteries of high energy

Mixture of 1,2-naphthoquinone-4-sulfonic acid sodium salt (NQ-S) and 2-hydroxy-1,4-naphthoquinone (Lawsone) is used as negative active species for aqueous organic redox

Unveiling dominant impact of electrochemical stability on

Aqueous organic redox flow batteries (AORFBs) hold potential for large-scale energy storage, which are limited by poor chemical stability of organic compounds. Performance enhancement of alkaline organic redox flow battery using catalyst including titanium oxide and Ketjenblack. Korean J. Chem. Eng., 39 (2022), pp. 1624-1631, 10.1007/s11814

Membraneless Micro Redox Flow Battery: From Vanadium to Alkaline

Membraneless Alkaline Quinone Micro Redox Flow Battery (MAQMRFB): Anthraquinone and Ferrocyanide This is the first time that a membraneless micro redox flow battery with organic redox species achieves energy efficiency. Furthermore, it is the highest energy efficiency ever obtained until now, even when compared with Vanadium electrolyte.

Sulfonated poly(ether-ether-ketone) membranes with

These microporous membranes showed high ionic conductivity without compromising the selectivity toward redox-active species. The membranes enabled excellent performance in alkaline aqueous organic and zinc-iron flow batteries, demonstrating long-term stability, high power density, and an operational current density up to 700 mA cm −2. The

Molecular Engineering of an Alkaline

Aqueous organic redox flow batteries (AORFBs) have recently gained significant attention as a potential candidate for grid-scale electrical energy storage. Successful implementation of this technol

Performance enhancement of alkaline organic redox flow battery

Carbon felt (CF) doped by catalyst including titanium oxide and ketjen black (TiO2/KB-CF) is used as negative electrode to enhance the redox reactivity of napthoquinone (NQSO) and thus the performance of aqueous organic redox flow batteries (AORFBs). The redox reactivity of NQSO is better with TiO2/KB-CF than with pristine CF (anodic current density of

Alkaline naphthoquinone‐based redox flow batteries with a

In this study, the performance of alkaline aqueous organic redox flow battery (AORFB) using an isomeric mixture of 1,2-naphthoquinone-4-sulfonic acid sodium salt and 2-hydroxy-1,4-naphthoquinone (NQSO) and potassium ferrocyanide (FeCN) as active materials dissolved in potassium hydroxide (KOH) is enhanced with replacing commercial Nafion

Bin LI, Wenming SONG, Kunlong YANG, Shuang JIANG, Tianyong ZHANG. Molecular engineering research progress of active materials for aqueous organic flow batteries[J]. CIESC Journal, 2022, 73(7): 2806-2818.