In the field of electrochemical energy storage, researchers are actively pursuing safer and higher energy density alternatives to traditional Lithium-ion batteries (LiBs). The imperative to facilitate electric mobility and contribute to UN Sustainable Development Goal #7 drives this quest. All-solid-state batteries (ASSBs) have emerged as a focal point of research interest over the past decade. However, challenges persist in realizing the market introduction of this transformative energy storage technology.
However, challenges persist in realizing the market introduction of this transformative energy storage technology. Key among these challenges is the fabrication of inorganic, organic, or hybrid (inorganic/organic) solid-state electrolytes (SSEs) characterized by broad electrochemical stability windows (ESWs), high ionic conductivity values, and chemical resistance to alkali metals (e.g. Li°).
Solid Inorganic Electrolytes (SIEs): These demonstrate high ionic conductivity and extended ESW but face challenges related to thermal processing and scalability. Salt-in-Polymer Solid Polymer Electrolytes (SiP-SPEs): Easier to synthesize, but they exhibit lower ionic conductivity and a narrower stability window. Single-Ion SPEs (SISPEs): Promising cation transference numbers but limited overall conductivity. Solid Composite Electrolytes (SCEs): These combine active and passive fillers, aiming to merge desirable features.
The MSCA-IF project titled “Self-assembled/Healable Hybrid Inorganic/Organic Polymer Electrolyte for Electrochemical Energy Storage” (HOPES) aligns with EU initiatives. It targets high-performance, sustainable all-solid-state lithium metal batteries (LMBs). HOPES aims to overcome scientific and technological obstacles hindering the realization of ultra-performing ASSBs. Specific objectives include developing robust, self-healable, and recyclable SSEs through colloidal self-assembly of nanosized building blocks (known as Hairy NPs or HNPs). Additionally, the project seeks to establish structure-property correlations using advanced characterization techniques at various levels, including synchrotron-based characterizations. This ambitious initiative holds the promise of advancing the frontiers of solid-state battery technology, ensuring safety, high performance, and sustainability.
