Journal ArticleDOI
“Wine-Dark Sea” in an Organic Flow Battery: Storing Negative Charge in 2,1,3-Benzothiadiazole Radicals Leads to Improved Cyclability
Wentao Duan,Wentao Duan,Jinhua Huang,Jeffrey A. Kowalski,Jeffrey A. Kowalski,Ilya A. Shkrob,M. Vijayakumar,M. Vijayakumar,Eric D. Walter,Baofei Pan,Zheng Yang,Zheng Yang,Jarrod D. Milshtein,Jarrod D. Milshtein,Bin Li,Chen Liao,Zhengcheng Zhang,Wei Wang,Jun Liu,Jun Liu,J.S. Moore,J.S. Moore,Fikile R. Brushett,Fikile R. Brushett,Lu Zhang,Xiaoliang Wei,Xiaoliang Wei +26 more
TLDR
In this article, a new heterocyclic organic anolyte molecule, 2,1,3-benzothiadiazole, has been reported, which has high solubility, a low redox potential, and fast electrochemical kinetics.Abstract:
Redox-active organic materials (ROMs) have shown great promise for redox flow battery applications but generally encounter limited cycling efficiency and stability at relevant redox material concentrations in nonaqueous systems. Here we report a new heterocyclic organic anolyte molecule, 2,1,3-benzothiadiazole, that has high solubility, a low redox potential, and fast electrochemical kinetics. Coupling it with a benchmark catholyte ROM, the nonaqueous organic flow battery demonstrated significant improvement in cyclable redox material concentrations and cell efficiencies compared to the state-of-the-art nonaqueous systems. Especially, this system produced exceeding cyclability with relatively stable efficiencies and capacities at high ROM concentrations (>0.5 M), which is ascribed to the highly delocalized charge densities in the radical anions of 2,1,3-benzothiadiazole, leading to good chemical stability. This material development represents significant progress toward promising next-generation energy st...read more
Citations
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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
Materials and Systems for Organic Redox Flow Batteries: Status and Challenges
Xiaoliang Wei,Xiaoliang Wei,Wenxiao Pan,Wentao Duan,Wentao Duan,Aaron Hollas,Zheng Yang,Zheng Yang,Bin Li,Zimin Nie,Jun Liu,Jun Liu,David Reed,Wei Wang,Vincent L. Sprenkle +14 more
TL;DR: 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.
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.
Journal ArticleDOI
Progress and prospects of next-generation redox flow batteries
Changkun Zhang,Leyuan Zhang,Yu Ding,Sangshan Peng,Sangshan Peng,Xuelin Guo,Yu Zhao,Gaohong He,Guihua Yu +8 more
TL;DR: A critical overview of the latest progress on the key components of RFBs, including redox species and membranes, including optimization strategies of the performance of RFB systems, computational modeling, prospects and opportunities in exploration of the advanced RFB system are also summarized in this article.
Journal ArticleDOI
Unraveling pH dependent cycling stability of ferricyanide/ferrocyanide in redox flow batteries
TL;DR: In this paper, a comprehensive study on the fundamental properties and electrochemical kinetics of K3[Fe(CN)6] and K4[Fe6] in aqueous supporting electrolytes is presented.
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.
Journal ArticleDOI
Electrochemical Energy Storage for Green Grid
Zhenguo Yang,Jianlu Zhang,Michael Kintner-Meyer,Xiaochuan Lu,Daiwon Choi,John P. Lemmon,Jun Liu +6 more
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
Redox flow batteries: a review
Adam Z. Weber,Matthew M. Mench,Matthew M. Mench,Jeremy P. Meyers,Philip N. Ross,Jeff T. Gostick,Qinghua Liu +6 more
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.
Journal ArticleDOI
Progress in Flow Battery Research and Development
TL;DR: Of the flow battery technologies that have been investigated, the all-vanadium redox flow battery has received the most attention and has shown most promise in various pre-commercial to commercial stationary applications to date, while new developments in hybrid redox fuel cells are promising to lead the way for future applications in mechanically and electrically "refuelable" electric vehicles.
Journal ArticleDOI
Recent Progress in Redox Flow Battery Research and Development
TL;DR: In this article, a review of recent progress in the research and development of redox flow battery technology, including cell-level components of electrolytes, electrodes, and membranes, is reviewed.