Toyota Motor Engineering & Manufacturing North America, Inc.

Deakin University

Robert Kerr

Timothy Sean Arthur

Nikhilendra Singh

Kensuke Takechi

Patrick Craig Howlett

Maria Forsyth

Fuminori Mizuno

An anode for a lithium or lithium-ion cell, protected with an SEI by pre-treatment in an SEI-formation cell, is stable for cell cycling even in the presence of substantial water in the cell electrolyte. A method for making the protected anode includes forming an SEI on a lithium or lithium-ion electrode by performing multiple charge/discharge cycles on the electrode in a first cell having an SEI formation electrolyte to produce the protected anode. The SEI formation electrolyte includes an ionic liquid having at least one of eight organic cations.

Ionic liquids for artificial SEI transplantation

An anode for a Li-ion cell, protected with an SEI by pre-treatment in an SEI-formation cell, is stable for cell cycling even in the presence of substantial water in the cell electrolyte. A method for making the protected anode includes forming an SEI on a lithium electrode by performing multiple charge/discharge cycles on the electrode in a first cell having an SEI formation electrolyte to produce the protected anode. The SEI formation electrolyte includes an ionic liquid having at least one of eight organic cations.

Artificial SEI transplantation

An electrolyte for Li-ion and other secondary electrochemical cells includes an FSI anion and at least one of methyltriethylphosphonium; trimethylisobutylphosphonium; methyltributylphosphonium; and trihexyltetradecylphosphonium. The electrolyte uniquely enables stable cell cycling even when water is present in the electrolyte at levels as high as 5000 ppm. Methyltriethylphosphonium and trimethylisobutylphosphonium-containing electrolytes are particularly effective in this water-stabilizing capacity.

Phosphonium-based ionic liquids for lithium metal-based batteries

Growing community of inventors

Croydon South, Australia

Robert Kerr