A high-energy and low-cost polysulfide/iodide redox flow battery

Li, Zhejun; Weng, Guoming; Zou, Qingli; Cong, Guangtao; Lu, Yi‐Chun

doi:10.1016/j.nanoen.2016.09.043

Cited by 157 publications

(162 citation statements)

References 71 publications

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“…By using PS‐contained catholyte, controlled voltage cutoff, and pretreated lithium anode, a PS‐based flow battery is realized with a decent energy density of 108 Wh L −1 and excellent cyclability over 2000 cycles ( Figure ) . When coupling PS catholyte and an alternative iodide anode, the redox flow battery can achieve high energy and a notably low cost of $85.4 (kW h) −1 , which is almost half that of the state‐of‐the‐art vanadium‐based flow battery, making it an attractive prospect in large‐scale stationary electrical applications . As in coin‐cell configurations, chemically prepared PS catholyte can be applied as the active materials for high‐performance Li–S batteries.…”

Section: Two Schools Of Thought For Ps Managementmentioning

confidence: 99%

Revisiting the Role of Polysulfides in Lithium–Sulfur Batteries

et al. 2018

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Intermediate polysulfides (S , where n = 2-8) play a critical role in both mechanistic understanding and performance improvement of lithium-sulfur batteries. The rational management of polysulfides is of profound significance for high-efficiency sulfur electrochemistry. Here, the key roles of polysulfides are discussed, with regard to their status, behavior, and their correspondingimpact on the lithium-sulfur system. Two schools of thoughts for polysulfide management are proposed, their advantages and disadvantages are compared, and future developments are discussed.

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Section: Two Schools Of Thought For Ps Managementmentioning

confidence: 99%

Revisiting the Role of Polysulfides in Lithium–Sulfur Batteries

et al. 2018

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“…[7] Among various zinc-based redox chemistries, [7,8] the I À /I 2 redox couple is the most promising with high solubility (KI > 8 m) [9] and excellent electrochemical properties. [10] Moreover,c ompared with bromine,I 2 is less corrosive and has al ower vapor pressure.L ie tal. have fabricated aZ IFB based on ZnI 2 and achieved ah igh energy density.…”

mentioning

confidence: 99%

A Long Cycle Life, Self‐Healing Zinc–Iodine Flow Battery with High Power Density

et al. 2018

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A zinc-iodine flow battery (ZIFB) with long cycle life, high energy, high power density, and self-healing behavior is prepared. The long cycle life was achieved by employing a low-cost porous polyolefin membrane and stable electrolytes. The pores in the membrane can be filled with a solution containing I that can react with zinc dendrite. Therefore, by consuming zinc dendrite, the battery can self-recover from micro-short-circuiting resulting from overcharging. By using KI, ZnBr , and KCl as electrolytes and a high ion-conductivity porous membrane, a very high power density can be achieved. As a result, a ZIFB exhibits an energy efficiency (EE) of 82 % at 80 mA cm , which is 8 times higher than the currently reported ZIFBs. Furthermore, a stack with an output of 700 W was assembled and continuously run for more than 300 cycles. We believe this ZIFB can lead the way to development of new-generation, high-performance flow batteries.

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“…A number of researchers are analyzing the cost metrics related to RFBs. 18,26,[115][116][117] For example, ion-selective membranes are one of the primary contributors to material costs, 116 and hence, research has been reported toward membrane-free RFBs. 118,119 Addressing safety concerns is very important and necessary for wide scale adoption.…”

Section: Solid Suspensions For Capacitive and Electrochemical Applmentioning

confidence: 99%

“…11,14,17 RFBs date back to at least the 1940s, [18][19][20][21] and recently interest in RFBs has increased in part because of the drive to enable larger scale energy storage applications to which RFBs are well suited, but also due to recent advances that have shown the potential to dramatically increase a) Electronic mail: gary.koenig@virginia.edu the energy density of these types of energy storage devices. 14,[22][23][24][25][26][27] Transportation applications are also being explored for RFBs, and energy density advances would be particularly important in making RFBs more competitive for electric vehicles. 28 More details on RFB technology and its advantages and disadvantages will be discussed in Sec.…”

Section: Introductionmentioning

confidence: 99%

Review Article: Flow battery systems with solid electroactive materials

Koenig

2017

Journal of Vacuum Science &Amp; Technology B, Nanotechnology and Microelectronics: Materials, Processing, Measurement, and Phen

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Energy storage is increasingly important for a diversity of applications. Batteries can be used to store solar or wind energy providing power when the Sun is not shining or wind speed is insufficient to meet power demands. For large scale energy storage, solutions that are both economically and environmentally friendly are limited. Flow batteries are a type of battery technology which is not as well-known as the types of batteries used for consumer electronics, but they provide potential opportunities for large scale energy storage. These batteries have electrochemical recharging capabilities without emissions as is the case for other rechargeable battery technologies; however, with flow batteries, the power and energy are decoupled which is more similar to the operation of fuel cells. This decoupling provides the flexibility of independently designing the power output unit and energy storage unit, which can provide cost and time advantages and simplify future upgrades to the battery systems. One major challenge of the existing commercial flow battery technologies is their limited energy density due to the solubility limits of the electroactive species. Improvements to the energy density of flow batteries would reduce their installed footprint, transportation costs, and installation costs and may open up new applications. This review will discuss the background, current progress, and future directions of one unique class of flow batteries that attempt to improve on the energy density of flow batteries by switching to solid electroactive materials, rather than dissolved redox compounds, to provide the electrochemical energy storage.

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A high-energy and low-cost polysulfide/iodide redox flow battery

Cited by 157 publications

References 71 publications

Revisiting the Role of Polysulfides in Lithium–Sulfur Batteries

Revisiting the Role of Polysulfides in Lithium–Sulfur Batteries

A Long Cycle Life, Self‐Healing Zinc–Iodine Flow Battery with High Power Density

Review Article: Flow battery systems with solid electroactive materials

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