TY - JOUR
T1 - High-Performance Alkaline Organic Redox Flow Batteries Based on 2-Hydroxy-3-carboxy-1,4-naphthoquinone
AU - Wang, Caixing
AU - Yang, Zhen
AU - Wang, Yanrong
AU - Zhao, Peiyang
AU - Yan, Wen
AU - Zhu, Guoyin
AU - Ma, Lianbo
AU - Yu, Bo
AU - Wang, Lei
AU - Li, Guigen
AU - Liu, Jie
AU - Jin, Zhong
N1 - Funding Information:
This work is supported by National Key R&D Program of China (2017YFA0208200, 2016YFB0700600, and 2015CB659300), Projects of NSFC (21872069, 51761135104, 21573108, and 21332005), High-Level Entrepreneurial and Innovative Talents Program of Jiangsu Province, and the Fundamental Research Funds for the Central Universities (020514380146).
Publisher Copyright:
© Copyright 2018 American Chemical Society.
PY - 2018/10/12
Y1 - 2018/10/12
N2 - 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).
AB - 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).
UR - http://www.scopus.com/inward/record.url?scp=85053685809&partnerID=8YFLogxK
U2 - 10.1021/acsenergylett.8b01296
DO - 10.1021/acsenergylett.8b01296
M3 - Article
AN - SCOPUS:85053685809
VL - 3
SP - 2404
EP - 2409
JO - ACS Energy Letters
JF - ACS Energy Letters
SN - 2380-8195
IS - 10
ER -