DataVXACS Energy LettersPaper
journal article·2018-10-12

High-Performance Alkaline Organic Redox Flow Batteries Based on 2-Hydroxy-3-carboxy-1,4-naphthoquinone

Caixing Wang, Zhen Yang, Yanrong Wang, Peiyang Zhao, Wen Yan, Guoyin Zhu, Lianbo Ma, Bo Yu, Lei Wang, Guigen Li, Jie Liu, Zhong Jin

ACS Energy Letters· Volume 3· Issue 10
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Source abstract

Abstract

Aqueous redox flow batteries (ARFBs) based on the electrolyte solutions of redox-active organic molecules are very attractive for the application of large-scale electrochemical energy storage. We propose a high-performance ARFB system utilizing 2-hydroxy-3-carboxy-1,4-naphthoquinone (2,3-HCNQ) and K4Fe(CN)6 as the anolyte and catholyte active species, respectively. The 2,3-HCNQ molecule exhibits high solubility and can carry out a reversible two-electron redox process with rapid redox kinetics. The assembled 2,3-HCNQ/K4Fe(CN)6 ARFB delivered a cell voltage of 1.02 V and realized a peak power density of 0.255 W cm–2. The 2,3-HCNQ/K4Fe(CN)6 ARFB can be stably operated at a current density of 100 mA cm–2 for long-term cycling (with a capacity retention of ∼94.7% after 100 cycles).
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Research context

Energy storage

OpenAlex topics: Advanced battery technologies research · Perovskite Materials and Applications · Electrocatalysts for Energy Conversion

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

Affiliations

Key Laboratory of Mesoscopic Chemistry of MOE, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, Jiangsu 210093, China

Institute of Chemistry & BioMedical Sciences, Nanjing University, Nanjing, Jiangsu 210023, China

Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States

Department of Chemistry, Duke University, Durham, North Carolina 27708, United States

Funding

Ministry of Education of the People's Republic of China · Ministry of Science and Technology of the People's Republic of China · Government of Jiangsu Province · National Natural Science Foundation of China

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