Publication date: 21st July 2025
In the development of more sustainable rechargeable batteries, battery safety, and in particular flammability, has become of greater interest. Non-flammable or flame-retarding liquid electrolytes are currently under development.[1] They are designed to offer the benefits of a conventional electrolyte, e.g. high ionic conductivity and wettability, but with the additional safety aspects. A common challenge, however, is the detrimental reaction of such electrolytes at the electrode-electrolyte interface (e.g. solvent co-intercalation leading to graphite exfoliation, or the formation of resistive solid electrolyte interphase (SEI) layers), resulting in poor performance.
Recent studies have shown several fluorinated carbonates as well as organophosphates as being promising candidates as non-flammable solvents or flame-retarding co-solvents/additives. One example of those we have investigated is bis(2,2,2-trifluoroethyl) carbonate (TFEC), which was used as a co-solvent with state-of-the-art carbonate ester solvents.[2] Comparable electrochemical performance was achieved when assessed against a benchmark, while very high TFEC fractions led to increased interfacial resistance and poor performance.
Electrolytes based on a non-flammable solvent, 1,1,1-trifluoroethyl methyl carbonate (FEMC), have also shown promise for their non-flammability attributes and other properties, but require approaches to stabilise the interfaces. Two such strategies are presented; the use of electrolyte additives, and interface engineering by pre-passivation.[3,4] The interfacial behaviour of FEMC-based electrolytes will also be discussed including properties of the formed SEI.
nanoGe is a prestigious brand of successful science conferences that are developed along the year in different areas of the world since 2009. Our worldwide conferences cover cutting-edge materials topics like perovskite solar cells, photovoltaics, optoelectronics, solar fuel conversion, surface science, catalysis and two-dimensional materials, among many others.
Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
The main topics of the Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics (IPEROP) are discussed every year in Asia-Pacific for gathering the recent advances in the fields of material preparation, modeling and fabrication of perovskite and hybrid and organic materials. Photovoltaic devices are analyzed from fundamental physics and materials properties to a broad set of applications. The conference also covers the developments of perovskite optoelectronics, including light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.
The International Conference on Perovskite Thin Film Photovoltaics Perovskite Photonics and Optoelectronics (NIPHO) is the best place to hear the latest developments in perovskite solar cells as well as on recent advances in the fields of perovskite light-emitting diodes, lasers, optical devices, nanophotonics, nonlinear optical properties, colloidal nanostructures, photophysics and light-matter coupling.