PMID- 33624413 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210423 IS - 1864-564X (Electronic) IS - 1864-5631 (Linking) VI - 14 IP - 8 DP - 2021 Apr 22 TI - Organic Multiple Redox Semi-Solid-Liquid Suspension for Li-Based Hybrid Flow Battery. PG - 1913-1920 LID - 10.1002/cssc.202100094 [doi] AB - Li-based hybrid flow batteries are very promising in the energy storage market for their high cell voltage and scale-up flexibility. However, the low volumetric capacity of catholyte has limited their practical application. A novel concept of organic multiple redox semi-solid-liquid (MRSSL) suspension was proposed and demonstrated by taking advantage of active materials in both liquid and solid phases in the suspension. In this study, high solubility of 2,2,6,6-tetramethylpiperidine-1-oxyl (TEMPO) in the liquid phase and high reversibility of 10-methylphenothiazine (MPT) composite in the solid phase were employed to develop a high-performance and low-cost organic MRSSL Li-based hybrid flow battery. It achieved a small voltage gap (<0.1 V) between liquid and solid phase, high cell voltage ( approximately 3.4 V) and high energy density (260 Wh L(-1) ). Due to the synergistic interactions between the liquid-phase TEMPO and the solid-phase MPT, the viscosity of the MRSSL suspension was significantly reduced. An intermittent-flow-mode test of TEMPO-MPT MRSSL suspension was conducted, which proved that the suspension had an applicable cycling performance with high volumetric capacity (50 Ah L(-1) ). The organic MRSSL suspension concept offers a new approach to increase the volumetric capacity and energy density of Li-based hybrid flow batteries by combining various low-cost solid and liquid organic active materials. CI - (c) 2021 Wiley-VCH GmbH. FAU - Zhang, Xuefeng AU - Zhang X AD - Chemical Hybrid Energy Novel Laboratory, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518055, Guangdong, P.R. China. FAU - Zhang, Peiyao AU - Zhang P AD - Chemical Hybrid Energy Novel Laboratory, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518055, Guangdong, P.R. China. FAU - Chen, Hongning AU - Chen H AUID- ORCID: 0000-0003-4030-7771 AD - Chemical Hybrid Energy Novel Laboratory, College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, 518055, Guangdong, P.R. China. LA - eng GR - 21908147/National Natural Science Foundation of China/ GR - 000002110234/Natural Science Foundation of SZU/ PT - Journal Article DEP - 20210307 PL - Germany TA - ChemSusChem JT - ChemSusChem JID - 101319536 SB - IM OTO - NOTNLM OT - Li battery OT - electrochemistry OT - energy storage OT - flow battery OT - semi-solid-liquid EDAT- 2021/02/25 06:00 MHDA- 2021/02/25 06:01 CRDT- 2021/02/24 05:50 PHST- 2021/02/16 00:00 [revised] PHST- 2021/01/14 00:00 [received] PHST- 2021/02/25 06:00 [pubmed] PHST- 2021/02/25 06:01 [medline] PHST- 2021/02/24 05:50 [entrez] AID - 10.1002/cssc.202100094 [doi] PST - ppublish SO - ChemSusChem. 2021 Apr 22;14(8):1913-1920. doi: 10.1002/cssc.202100094. Epub 2021 Mar 7.