scholarly journals Electrocatalysts for Using Renewably-Sourced, Organic Electrolytes for Redox Flow Batteries

Catalysts ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 315
Author(s):  
Robert S. Weber

Biomass could be a source of the redox shuttles that have shown promise for operation as high potential, organic electrolytes for redox flow batteries. There is a sufficient quantity of biomass to satisfy the growing demand to buffer the episodic nature of renewably produced electricity. However, despite a century of effort, it is still not evident how to use existing information from organic electrochemistry to design the electrocatalysts or supporting electrolytes that will confer the required activity, selectivity and longevity. In this research, the use of a fiducial reaction to normalize reaction rates is shown to fail.

Author(s):  
Rajesh Bharat Jethwa ◽  
Evan Wenbo Zhao ◽  
Rachel N. Kerber ◽  
Erlendur Jónsson ◽  
Dominic S Wright ◽  
...  

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....


2014 ◽  
Vol 454 ◽  
pp. 44-50 ◽  
Author(s):  
Do-Hyeong Kim ◽  
Seok-Jun Seo ◽  
Myung-Jin Lee ◽  
Jin-Soo Park ◽  
Seung-Hyeon Moon ◽  
...  

ChemSusChem ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2142-2159 ◽  
Author(s):  
Thuan‐Nguyen Pham‐Truong ◽  
Qing Wang ◽  
Jalal Ghilane ◽  
Hyacinthe Randriamahazaka

2020 ◽  
Vol MA2020-01 (52) ◽  
pp. 2886-2886
Author(s):  
Raymond Rong Sheng Shi ◽  
Sherman Jun Liang Lauw ◽  
Nicolette Angelique Bao Yun Foo ◽  
Richard David Webster

2021 ◽  
Author(s):  
Amira Alazmi ◽  
Charles Wan ◽  
Pedro Costa ◽  
Fikile Brushett

Augmenting reaction rates on porous carbon electrodes is critical for reducing the cost of all-vanadium redox flow batteries (VRFBs). To this end, reduced graphene oxide (rGO) based carbons hold promise, demonstrating high specific surface area, chemomechanical stability, and electrochemical activity. While initial efforts have shown that rGOs can enhance VRFB performance, the range of unique processing conditions leads to a collection of materials with disparate elemental composition and porous structure, thus obscuring performance-determining characteristics behind redox reactions and frustrating the development of generalizable design principles. Here, we generate rGO electrocatalysts of nearly identical chemical composition but different textures (i.e., surface area and pore structure) by varying the drying step in the graphene synthesis (i.e., vacuum-drying vs. carbon dioxide critical point drying). We apply spectroscopic and electrochemical techniques on the synthesized rGOs, observing a three-fold increase in BET surface area using critical point drying. We subsequently decorate carbon felt electrodes – both pristine and thermally activated – with rGO microparticles via a flow deposition procedure, and evaluate their performance and durability in a VRFB cell. The synthesis approach and findings described in this work inform and complement efforts to advance the material science and engineering of rGO electrocatalysts.


RSC Advances ◽  
2020 ◽  
Vol 10 (65) ◽  
pp. 39601-39610
Author(s):  
Pieter Geysens ◽  
Jorik Evers ◽  
Wim Dehaen ◽  
Jan Fransaer ◽  
Koen Binnemans

The redox-active 1,4-diaminoanthraquinone structure was modified with several side chains in order to increase the solubility in organic electrolytes for redox flow batteries.


2021 ◽  
pp. 2108777
Author(s):  
Qianru Chen ◽  
Yangguang Lv ◽  
Zhizhang Yuan ◽  
Xianfeng Li ◽  
Guihua Yu ◽  
...  

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