The electrolyte is the heart of a redox flow battery — it stores the energy, sets the cell voltage, and determines cycle life. This collection groups the electrolyte materials and supporting chemicals we stock for flow-battery research, alongside neighbouring electrolyte families (lithium-ion, sodium-ion, potassium-ion, solid-state, protonic ceramic) that researchers commonly benchmark against when scaling redox-flow chemistries from coin-cell screening to single-cell stacks.
Use this page as the starting point if you are building or characterising aqueous and non-aqueous flow electrolytes. The materials here cover three broad workflows:
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Active-species and salt screening — conducting salts (LiPF6, KPF6) and reference solvents that are routinely repurposed as supporting electrolytes when building model flow systems for kinetic and transport studies.
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Solvent and additive formulation — carbonate solvents such as propylene carbonate, piperidinium ionic liquids (PP13TFSI) for non-aqueous flow chemistries, and interphase-forming additives (DENE, TMSB, NaDFOB, phenyl disulfide) used to stabilise electrode surfaces in posolyte and negolyte half-cells.
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Solid-state and ceramic membranes — perovskite-type LLTO, thio-LISICON-family LGPS, and the protonic-ceramic electrolyte BZCYYb, useful as reference materials when comparing membrane transport against ion-exchange separators in flow cells.
For redox-flow work specifically, the most relevant items are the high-purity carbonate solvents (for non-aqueous organic flow chemistries), the piperidinium ionic liquid (for wide-window non-aqueous posolytes), and the borate / oxalatoborate additives that stabilise carbon current collectors against parasitic oxidation. The polysiloxane (PDMS) host is included for researchers exploring quasi-solid or gel-polymer flow concepts.
Every product listed here is offered in research-scale packaging suitable for half-cell, single-cell, and small-stack experiments. Concrete formulation guidance — molarities, solvent ratios, and additive loadings — lives on each product page.
If you are formulating an aqueous vanadium or iron-chromium electrolyte, start with the supporting salts and additives in this collection and pair them with the membranes in Redox Flow Battery. If you are exploring non-aqueous organic or metal-coordination flow chemistries, begin with the carbonate solvents and the piperidinium ionic liquid, then branch into Electrolyte Additives and Solvents for full formulation. For solid-state benchmarking, see Solid-State Electrolytes.
