DataVXACS Energy LettersPaper
journal article·2024-12-13

Kinetic Control over Disproportionation Stabilizes Wurster’s Blue Catholyte for Nonaqueous Redox Flow Batteries

Xiaoting Fang, Zhiguang Li, Lifan Zeng, Heonjae Jeong, Diqing Yue, Lily A. Robertson, Yuyue Zhao, Lei Cheng, Ilya A. Shkrob, Xiaoliang Wei, Lu Zhang

ACS Energy Letters· Volume 9· Issue 12
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Source abstract

Abstract

Redoxmers are organic molecules that serve as charge carriers in redox flow batteries. While these materials are affordable and easy to source, insufficient stability of their charged states (radical ions) remains a challenge. A common reaction of these species is their disproportionation. This reversible reaction yields unstable multiply charged states, shifting the overall charge transfer equilibrium toward the decomposition products. Here we show how kinetic controls can be engineered into a redoxmer molecule to suppress these unwanted charge transfer reactions. This approach is used to transform Wurster’s blue, which is historically the first example of a stable radical ion in organic chemistry, into an exceptionally durable redoxmer molecule that persists over thousands of electrochemical cycles.
Source: openalex_inverted_index · Quality: baseline

Research context

Energy storage

OpenAlex topics: Advanced battery technologies research · Electrocatalysts for Energy Conversion · Advanced Battery Materials and Technologies

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Joint Center for Energy Storage Research, Argonne National Laboratory, Lemont, Illinois 60439, United States

Chemical Sciences and Engineering Division, Argonne National Laboratory, Lemont, Illinois 60439, United States

School of Mechanical Engineering, Purdue University, Indianapolis, Indiana 46202, United States

Chemical Genomics Core, School of Medicine, Indiana University, Indianapolis, Indiana 46202, United States

Materials Science Division, Argonne National Laboratory, Lemont, Illinois 60439, United States

Funding

Division of Chemistry · Basic Energy Sciences

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