Neutral pH aqueous redox flow batteries using an anthraquinone-ferrocyanide redox couple

2020 ◽  
Vol 8 (17) ◽  
pp. 5727-5731 ◽  
Author(s):  
Wonmi Lee ◽  
Agnesia Permatasari ◽  
Yongchai Kwon
Keyword(s):  
Redox Couple ◽  
Disulfonic Acid ◽  
Sodium Salts ◽  
Redox Flow Batteries ◽  
Neutral Ph ◽  
Flow Batteries

Anthraquinone-2,7-disulfonic acid (2,7-AQDS) and ferrocyanide including potassium and sodium salts are used as a redox couple for neutral aqueous redox flow batteries (ARFBs).

Naphthalene diimide as a two-electron anolyte for aqueous and neutral pH redox flow batteries

2020 ◽  
Vol 8 (22) ◽  
pp. 11218-11223
Author(s):  
Veerababu Medabalmi ◽  
Mahesh Sundararajan ◽  
Vikram Singh ◽  
Mu-Hyun Baik ◽  
Hye Ryung Byon
Keyword(s):  
Potassium Salt ◽  
Redox Reactions ◽  
Ion Pairing ◽  
Redox Flow Batteries ◽  
Neutral Ph ◽  
Naphthalene Diimide ◽  
Flow Batteries

The potassium salt of N,N′-bis(glycinyl)naphthalene diimide [K2-BNDI] showed stable two-electron redox reactions accompanied by ion-pairing in aqueous redox-flow batteries.

A novel vanadium/cobalt redox couple in aqueous acidic solution for redox flow batteries

2019 ◽  
Vol 44 (1) ◽  
pp. 411-424 ◽  
Author(s):  
Nilufer Kocyigit ◽  
Metin Gencten ◽  
Mutlu Sahin ◽  
Yucel Sahin
Keyword(s):  
Acidic Solution ◽  
Redox Couple ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Aqueous Acidic Solution

scholarly journals High energy density MnO4−/MnO42− redox couple for alkaline redox flow batteries

2016 ◽  
Vol 52 (97) ◽  
pp. 14039-14042 ◽  
Author(s):  
Alejandro N. Colli ◽  
Pekka Peljo ◽  
Hubert H. Girault
Keyword(s):  
Energy Density ◽  
Redox Potential ◽  
Room Temperature ◽  
High Energy ◽  
Redox Couple ◽  
High Energy Density ◽  
High Solubility ◽  
Redox Flow Batteries ◽  
Electrochemical Reversibility ◽  
Flow Batteries

The MnO4−/MnO42− redox couple has a positive redox potential, high electrochemical reversibility and high solubility, up to 3.62 M at room temperature.

scholarly journals Sulfonated tryptanthrin anolyte increases performance in pH neutral aqueous redox flow batteries

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Daniela Pinheiro ◽  
Marta Pineiro ◽  
J. Sérgio Seixas de Melo
Keyword(s):  
Alternative Energy ◽  
Active Material ◽  
High Energy ◽  
Disodium Salt ◽  
Water Soluble ◽  
Great Promise ◽  
Safe Alternative ◽  
Redox Flow Batteries ◽  
Neutral Ph ◽  
Flow Batteries

AbstractAqueous organic redox flow batteries (AORFBs) hold great promise as low-cost, environmentally friendly and safe alternative energy storage media. Here we present aqueous organometallic and all-organic active materials for RFBs with a water-soluble active material, sulfonated tryptanthrin (TRYP-SO3H), working at a neutral pH and showing long-term stability. Electrochemical measurements show that TRYP-SO3H displays reversible peaks at neutral pH values, allowing its use as an anolyte combined with potassium ferrocyanide or 4,5-dihydroxy-1,3-benzenedisulfonic acid disodium salt monohydrate as catholytes. Single cell tests show reproducible charge-discharge cycles for both catholytes, with significantly improved results for the aqueous all-organic RFB reaching high cell voltage (0.94 V) and high energy efficiencies, stabilized during at least 50 working cycles.

Sign in / Sign up

Export Citation Format

Share Document