New materials for electrochemical energy green storage.

FRECHERO, MARISA ALEJANDRA

Conferencia; GLOBAL VIRTUAL SUMMIT ON MATERIALS SCIENCE AND ENGINEERING; 2020

National Cheng Kung University

The present Century is signed by the paramount importance of designing new Green Energy sources. At present, an efficient and renewable energy use claims for clean sources for a sustainable World growth. This is why, finding diverse and innovative energy storage methods is the aim of much of the Scientific research interest today and also, for many Governments around the globe. The concept of sustainability was introduced in 1987, however, its implementation is slow many countries. The main reasons for this rely on the changes those countries need to make regarding the implementation of measures that have an effect on their economical resources in order to adapt their energy policies to the present sustainability requirements.Batteries and supercapacitors are two common alternatives for providing sources and storage of electrochemical energy. Energy obtained from green sources like wind and solar radiation can be stored in batteries as Lithium ion batteries (LIBs). Today, the most important and widely used storage alternative are rechargeable (secondary) batteries. Those batteries have many advantages: high voltage, low self-discharge rates, long cycling life, low toxicity, and high reliability. However, the performance of these devices depends on the materials used both for their components, i.e. electrodes and electrolytes. Unfortunately, a very precise material selection is not enough to guarantee good functionality; one of the biggest technology challenges is to find couples of materials -electrode/electrolyte-with high compatibility regarding the use of environmental friendly materials. Despite the fact that lithium batteries are the most popular in the present days, the technology and scientific community is developing a new generation of batteries mainly because of some safety issues. Therefore, Solid State Batteries (SSBs) are the future promise based not only on lithium but also on other cations like sodium, calcium, etc. essentially due to a most equal global distribution and a lower economical cost. In this presentation, it is shown some of our most recent results in new solid electrolytes materials based on glasses, ceramics and glassy-hybrid (IL-glass) materials in which Lithium cation is the main ionic carrier. A green chemical composition selection is one of the aims of our work.Our main goal is to improve not only the electrolyte ionic conductivity but also to find the proper electrode material that suits -as good as it can- at the interface region with a large variety of electrode materials, which represents one of the most important technical issues to overcome today, in order to obtain the new generation of all-solid state batteries [1-5] but always as greener as possible.