scholarly journals Composite Polybenzimidazole Membrane with High Capacity Retention for Vanadium Redox Flow Batteries

Molecules ◽  
2021 ◽  
Vol 26 (6) ◽  
pp. 1679
Author(s):  
Jacobus C. Duburg ◽  
Kobra Azizi ◽  
Søren Primdahl ◽  
Hans Aage Hjuler ◽  
Elena Zanzola ◽  
...  
Keyword(s):  
Energy Storage ◽  
Composite Membrane ◽  
High Capacity ◽  
High Energy ◽  
Electricity Production ◽  
Capacity Retention ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Storage Technologies ◽  
Capacity Drop

Currently, energy storage technologies are becoming essential in the transition of replacing fossil fuels with more renewable electricity production means. Among storage technologies, redox flow batteries (RFBs) can represent a valid option due to their unique characteristic of decoupling energy storage from power output. To push RFBs further into the market, it is essential to include low-cost materials such as new generation membranes with low ohmic resistance, high transport selectivity, and long durability. This work proposes a composite membrane for vanadium RFBs and a method of preparation. The membrane was prepared starting from two polymers, meta-polybenzimidazole (6 mm) and porous polypropylene (30 μm), through a gluing approach by hot-pressing. In a vanadium RFB, the composite membrane exhibited a high energy efficiency (~84%) and discharge capacity (~90%) with a 99% capacity retention over 90 cycles at 120 mA∙cm−2, exceeding commercial Nafion® NR212 (~82% efficiency, capacity drop from 90% to 40%) and Fumasep® FAP-450 (~76% efficiency, capacity drop from 80 to 65%).

An Energy Dense, Robust, Powerful Bipolar Zinc-Ferrocene Redox Flow Battery

2020 ◽  
Author(s):  
Jian Luo ◽  
Bo Hu ◽  
Wenda Wu ◽  
Maowei Hu ◽  
Leo Liu
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Low Cost ◽  
High Energy ◽  
High Energy Density ◽  
Redox Flow Battery ◽  
Power Performance ◽  
Flow Battery ◽  
Redox Flow Batteries ◽  
Flow Batteries

Redox flow batteries (RFBs) have been recognized as a promising option for scalable and dispatchable renewable energy storage (e.g. solar and wind energy). Zinc metal represents a low cost, high capacity anode material to develop high energy density aqueous redox flow batteries. However, the energy storage applications of traditional inorganic Zn halide flow batteries are primarily plagued by the material challenges of traditional halide cathode electrolytes (e.g. bromine) including corrosion, toxicity, and severe crossover. As reported here, we have developed a bipolar Zinc-ferrocene salt compound, Zinc 1,1’-bis(3-sulfonatopropyl)ferrocene, Zn[Fc(SPr)2] (1.80 M solubility or 48.2 Ah/L charge storage capacity) – a robust, energy-dense, bipolar redox-active electrolyte material for high performance Zn organic RFBs. Using a low-cost porous Daramic membrane, the Zn[Fc(SPr)2] aqueous organic redox flow battery (AORFB) has worked in dual-flow and single-flow modes. It has manifested outstanding current, energy, and power performance, specifically, operating at high current densities of up to 200 mA/cm2 and delivering an energy efficiency of up to 81.5% and a power density of up to 270.5 mW/cm2. A Zn[Fc(SPr)2] AORFB demonstrated an energy density of 20.2 Wh/L and displayed 100% capacity retention for 2000 cycles (1284 hr or 53.5 days). The Zn[Fc(SPr)2] ionic bipolar electrolyte not only offers record-setting, highly-stable, energy-dense, and the most powerful Zn-organic AORFBs to date, but it also provides a new paradigm to develop even more advanced redox materials for scalable energy storage.

Unlocking the capacity of iodide for high-energy-density zinc/polyiodide and lithium/polyiodide redox flow batteries

2017 ◽  
Vol 10 (3) ◽  
pp. 735-741 ◽  
Author(s):  
Guo-Ming Weng ◽  
Zhejun Li ◽  
Guangtao Cong ◽  
Yucun Zhou ◽  
Yi-Chun Lu
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Complexing Agent ◽  
Iodide Ions ◽  
Redox Flow Batteries ◽  
Bromide Ions ◽  
Flow Batteries

A new concept of exploiting bromide ions as a complexing agent to ‘free-up’ iodide ions for energy storage.

scholarly journals Progress and directions in low-cost redox-flow batteries for large-scale energy storage

2017 ◽  
Vol 4 (1) ◽  
pp. 91-105 ◽  
Author(s):  
Bin Li ◽  
Jun Liu
Keyword(s):  
Energy Storage ◽  
Large Scale ◽  
Low Cost ◽  
Lithium Ion ◽  
High Energy ◽  
Water Soluble ◽  
Side Reactions ◽  
Aqueous Systems ◽  
Redox Flow Batteries ◽  
Flow Batteries

Abstract Compared to lithium-ion batteries, redox-flow batteries have attracted widespread attention for long-duration, large-scale energy-storage applications. This review focuses on current and future directions to address one of the most significant challenges in energy storage: reducing the cost of redox-flow battery systems. A high priority is developing aqueous systems with low-cost materials and high-solubility redox chemistries. Highly water-soluble inorganic redox couples are important for developing technologies that can provide high energy densities and low-cost storage. There is also great potential to rationally design organic redox molecules and fine-tune their properties for both aqueous and non-aqueous systems. While many new concepts begin to blur the boundary between traditional batteries and redox-flow batteries, breakthroughs in identifying/developing membranes and separators and in controlling side reactions on electrode surfaces also are needed.

scholarly journals High–energy density nonaqueous all redox flow lithium battery enabled with a polymeric membrane

2015 ◽  
Vol 1 (10) ◽  
pp. e1500886 ◽  
Author(s):  
Chuankun Jia ◽  
Feng Pan ◽  
Yun Guang Zhu ◽  
Qizhao Huang ◽  
Li Lu ◽  
...  
Keyword(s):  
Energy Storage ◽  
Energy Density ◽  
Lithium Battery ◽  
Large Scale ◽  
High Energy ◽  
Vanadium Redox Flow Battery ◽  
High Energy Density ◽  
Polymeric Membrane ◽  
Flow Batteries ◽  
Storage Technologies

Redox flow batteries (RFBs) are considered one of the most promising large-scale energy storage technologies. However, conventional RFBs suffer from low energy density due to the low solubility of the active materials in electrolyte. On the basis of the redox targeting reactions of battery materials, the redox flow lithium battery (RFLB) demonstrated in this report presents a disruptive approach to drastically enhancing the energy density of flow batteries. With LiFePO4 and TiO2 as the cathodic and anodic Li storage materials, respectively, the tank energy density of RFLB could reach ~500 watt-hours per liter (50% porosity), which is 10 times higher than that of a vanadium redox flow battery. The cell exhibits good electrochemical performance under a prolonged cycling test. Our prototype RFLB full cell paves the way toward the development of a new generation of flow batteries for large-scale energy storage.

Redox-active poly(ionic liquid)s as active materials for energy storage applications

2017 ◽  
Vol 5 (31) ◽  
pp. 16231-16240 ◽  
Author(s):  
G. Hernández ◽  
M. Işik ◽  
D. Mantione ◽  
A. Pendashteh ◽  
P. Navalpotro ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Energy Storage ◽  
Lithium Metal ◽  
Active Materials ◽  
Redox Flow Batteries ◽  
Redox Active ◽  
Flow Batteries ◽  
Energy Storage Applications ◽  
Poly Ionic Liquid ◽  
Storage Technologies

The incorporation of redox-active counter anions (anthraquinone and nitroxide groups) into poly(ionic liquid)s broadens the scope of applications to different energy storage technologies such as lithium, metal-air or redox-flow batteries.

A Self-Trapping, Bipolar Viologen Bromide Electrolyte for Aqueous Redox Flow Batteries

2020 ◽  
Author(s):  
wenda wu ◽  
Jian Luo ◽  
Fang Wang ◽  
Bing Yuan ◽  
Tianbiao Liu
Keyword(s):  
Redox Flow Battery ◽  
Capacity Retention ◽  
Redox Flow Batteries ◽  
Redox Electrolyte ◽  
Charge Process ◽  
Self Trapping ◽  
Flow Batteries ◽  
Total Capacity ◽  
Neutral Conditions ◽  
Low Solubility

Aqueous organic redox flow batteries (AORFBs) have become increasing attractive for scalable energy storage. However, it remains challenging to develop high voltage, powerful AORFBs because of the lack of catholytes with high redox potential. Herein, we report methyl viologen dibromide (<b>[MV]Br<sub>2</sub></b>) as a facile self-trapping, bipolar redox electrolyte material for pH neutral redox flow battery applications. The formation of the <b>[MV](Br<sub>3</sub>)<sub>2</sub></b> complex was computationally predicted and experimentally confirmed. The low solubility <b>[MV](Br<sub>3</sub>)<sub>2</sub></b> complex in the catholyte during the battery charge process not only mitigates the crossover of charged tribromide species (Br<sub>3</sub><sup>-</sup>) and addresses the toxicity concern of volatile bromine simultaneously. A 1.53 V bipolar MV/Br AORFB delivered outstanding battery performance at pH neutral conditions, specifically, 100% total capacity retention, 133 mW/cm<sup>2</sup> power density, and 60% energy efficiency at 40 mA/cm<sup>2</sup>.

scholarly journals Designing for conjugate addition: an amine functionalised quinone anolyte for redox flow batteries

2021 ◽  
Author(s):  
Rajesh Bharat Jethwa ◽  
Evan Wenbo Zhao ◽  
Rachel N. Kerber ◽  
Erlendur Jónsson ◽  
Dominic S Wright ◽  
...  
Keyword(s):  
Energy Density ◽  
Storage Systems ◽  
Conjugate Addition ◽  
High Energy ◽  
Emerging Technology ◽  
High Energy Density ◽  
Organic Electrolytes ◽  
Redox Flow Batteries ◽  
Flow Batteries ◽  
Grid Level

Redox flow batteries (RFBs) are promising grid-level electrical storage systems. The key to this emerging technology is the development of cheap, highly soluble, and high energy-density inorganic and organic electrolytes....

Progress in redox flow batteries, remaining challenges and their applications in energy storage

RSC Advances ◽  
2012 ◽  
Vol 2 (27) ◽  
pp. 10125 ◽  
Author(s):  
Puiki Leung ◽  
Xiaohong Li ◽  
Carlos Ponce de León ◽  
Leonard Berlouis ◽  
C. T. John Low ◽  
...  
Keyword(s):  
Energy Storage ◽  
Redox Flow Batteries ◽  
Flow Batteries

Eutectic Electrolytes for High-Energy-Density Redox Flow Batteries

2018 ◽  
Vol 3 (12) ◽  
pp. 2875-2883 ◽  
Author(s):  
Changkun Zhang ◽  
Leyuan Zhang ◽  
Yu Ding ◽  
Xuelin Guo ◽  
Guihua Yu
Keyword(s):  
Energy Density ◽  
High Energy ◽  
High Energy Density ◽  
Redox Flow Batteries ◽  
Flow Batteries
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