EP 4272277 A1 20231108 - A LIGNIN BASED REDOX FLOW BATTERY, A REDOX SPECIES, AND A METHOD FOR ITS MANUFACTURE
Title (en)
A LIGNIN BASED REDOX FLOW BATTERY, A REDOX SPECIES, AND A METHOD FOR ITS MANUFACTURE
Title (de)
REDOX-FLOW-BATTERIE AUF LIGNINBASIS, REDOX-SPEZIES UND VERFAHREN ZU DEREN HERSTELLUNG
Title (fr)
BATTERIE À FLUX REDOX À BASE DE LIGNINE, ESPÈCE REDOX ET SON PROCÉDÉ DE FABRICATION
Publication
Application
Priority
- SE 2150263 A 20210308
- EP 2022054689 W 20220224
Abstract (en)
[origin: WO2022189162A1] Disclosed herein is a redox flow battery (RFB) comprising a lignin-based mixture, which is suitable for the positive side and obtained by reacting lignosulfonates under elevated temperatures in an aqueous alkaline solution with at least one oxidizing agent selected from the group consisting of hydrogen peroxide (H2O2), chlorine dioxide (ClO2), and molecular oxygen (O2). The lignin-based mixture that is suitable for the negative side is obtained by a reaction of lignosulfonates in a hydrothermal autoclave at elevated temperatures and pressure over atmospheric. An advantage is that the starting material for making the electrolytes of RFB is very inexpensive and environmentally friendly. The mixture can be made in one step without additional reaction steps and can be used directly without further upgrading. The electrochemical reversibility and the storage capacity are good. A total organic RFB is possible.
IPC 8 full level
H01M 8/1016 (2016.01); H01M 8/18 (2006.01)
CPC (source: EP)
H01M 8/1016 (2013.01); H01M 8/188 (2013.01); Y02E 60/50 (2013.01)
Citation (search report)
See references of WO 2022189162A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
Designated validation state (EPC)
KH MA MD TN
DOCDB simple family (publication)
DOCDB simple family (application)
EP 2022054689 W 20220224; EP 22710346 A 20220224