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Journal ArticleDOI

Materials and Systems for Organic Redox Flow Batteries: Status and Challenges

TLDR
In this paper, the recent development of a variety of Redox-Active Organic Materials (ROMs) and associated battery designs in both aqueous and nonaqueous electrolytes are reviewed.
Abstract
Redox flow batteries (RFBs) are propitious stationary energy storage technologies with exceptional scalability and flexibility to improve the stability, efficiency, and sustainability of our power grid. The redox-active materials are the key component for RFBs with which to achieve high energy density and good cyclability. Traditional inorganic-based materials encounter critical technical and economic limitations such as low solubility, inferior electrochemical activity, and high cost. Redox-active organic materials (ROMs) are promising alternative “green” candidates to push the boundaries of energy storage because of the significant advantages of molecular diversity, structural tailorability, and natural abundance. Here, the recent development of a variety of ROMs and associated battery designs in both aqueous and nonaqueous electrolytes are reviewed. The critical challenges and potential research opportunities for developing practically relevant organic flow batteries are discussed.

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Citations
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Correction: Review of electrical energy storage technologies, materials and systems: challenges and prospects for large-scale grid storage

TL;DR: Gur et al. as discussed by the authors reviewed electrical energy storage technologies, materials and systems: challenges and prospects for large-scale grid storage, and provided a review of the current state of the art.
Journal ArticleDOI

Opportunities and Challenges for Organic Electrodes in Electrochemical Energy Storage.

TL;DR: This review provides a comprehensive overview of all reported cell configurations that involve electroactive organic compounds working either in the solid state or in solution for aqueous or nonaqueous electrolytes and highlights the most promising systems based on such various chemistries.
Journal ArticleDOI

Electrolyte Lifetime in Aqueous Organic Redox Flow Batteries: A Critical Review

TL;DR: It is found that simple galvanostatic charge-discharge cycling is inadequate for assessing capacity fade when fade rates are low or extremely low and refining methods to include potential holds for accurately assessing molecular lifetimes under such circumstances are recommended.
Journal ArticleDOI

A biomimetic high-capacity phenazine-based anolyte for aqueous organic redox flow batteries

TL;DR: In this article, a phenazine-based ASO compound with an exceptionally high reversible capacity that exceeds 90% of its theoretical value was described, and the authors demonstrated an increased solubility from near zero with pristine phenazine to as much as 1.8 mV while also shifting its redox potential by more than 400 mV.
Journal ArticleDOI

Status and Prospects of Organic Redox Flow Batteries toward Sustainable Energy Storage

TL;DR: In this article, a promising technology for large-scale electricity energy storage to realize efficient utilization of intermittent renewable energy is presented. Redox flow batteries (RFBs) are regarded as a promising energy storage technology.
References
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Journal ArticleDOI

Electrical Energy Storage for the Grid: A Battery of Choices

TL;DR: The battery systems reviewed here include sodium-sulfur batteries that are commercially available for grid applications, redox-flow batteries that offer low cost, and lithium-ion batteries whose development for commercial electronics and electric vehicles is being applied to grid storage.
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Towards greener and more sustainable batteries for electrical energy storage

TL;DR: The notion of sustainability is introduced through discussion of the energy and environmental costs of state-of-the-art lithium-ion batteries, considering elemental abundance, toxicity, synthetic methods and scalability.
Journal ArticleDOI

Electrochemical Energy Storage for Green Grid

TL;DR: This review offers details of the technologies, in terms of needs, status, challenges and future R&d directions, that are expected to integrate significant levels of renewables into the electrical grid.
Journal ArticleDOI

Promise and reality of post-lithium-ion batteries with high energy densities

TL;DR: A review of post-lithium-ion batteries is presented in this paper with a focus on their operating principles, advantages and the challenges that they face, and the volumetric energy density of each battery is examined using a commercial pouch-cell configuration.
Journal ArticleDOI

Redox flow batteries: a review

TL;DR: In this article, the components of RFBs with a focus on understanding the underlying physical processes are examined and various transport and kinetic phenomena are discussed along with the most common redox couples.
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