OXIS Energy to supply solid-state lithium-sulphur cell and battery systems by autumn 2021 21 April 2021 OXIS Energy Ltd., Abingdon, Oxfordshire, United Kingdom, will deploy Solid-State Lithium Sulfur (Li-S) cell and battery systems to its clients and partners worldwide by Autumn 2021 for use in trials, proof of concept and demonstrator battery systems for the Aviation, Marine, Defence and Heavy electric Vehicles (HEV) sectors. OXIS has been collaborating with European manufacturers on the development of Solid-State Li-S technology for almost 4 years. As a result of a technological breakthrough three years ago, OXIS has filed 9 new families of patents to protect both Quasi and Solid-State Intellectual Property Rights.