Screen Shot 2017 05 17 at 4.04.47 PM

Courtesy of Dr. Nicola Perry, Kyushu University

From top left, clockwise:

1) BATTERY: An ion chemical potential difference across the cell electrolyte enables electrical work to be done on an external load (discharging) or energy storage (charging) at room temperature (energy conversion/storage)
2) CHEMI-RESISTIVE SENSOR: Gas adsorption by electron-withdrawing species increases the measured n-type resistance in sensor material with high surface-to-volume ratio, enabling gas sensing (environmental monitoring)
3) SOLID OXIDE CELL: High temperature, clean, and efficient electrochemical power generation from various fuels, or chemical fuel production via electrolysis within the same reversible device (energy conversion/storage)
4) PHOTOELECTROCHEMICAL CELL: Electrons and holes, generated by incident sunlight in semiconductor, separate under internal electric field and drive the water splitting reaction generating fuel and oxygen (energy storage)
5) BIO-IONICS: Interactions between biological cells and redox active nanoparticles have implications for toxicity and antimicrobial applications; additionally, biological ion transport suggests possibilities for biomimetic solid state ionics (health)
6) PHOTO-CHROMICS: reversible voltage-driven ion motion changes optical absorption of window, giving control of light transmission with applications to smart windows and displays (energy conservation)
7) MEMRISTOR/ RESISTIVE SWITCH: voltage-driven changes in resistance state owing to formation of conductive regions or filaments enable new applications in memory and computing (nanoelectronics)
8) SOLAR THERMOCHEMICAL CELL: solar heating causes mixed conductor to lose oxygen; upon cooling materials are thermodynamically driven to pick up oxygen, for example turning water into useful fuel (energy storage)

Letter from the Current President, Prof. Han-Ill Yoo

Welcome to the new International Society for Solid State Ionics – ISSI – Website! 


Dear Solid State Ionicists all over the world:

Solid State Ionics is concerned with the science and technology of ions in motion in the solid state. It has now been extended to the condensed state in general to find even a wider variety of technological applications for, e.g., energy conversion/storage, information conversion/storage, materials sieving/pumping, iono-electronics, bio-ionics, and prevention and prediction of functional degradation of those ionic devices.
Our society ISSI was first founded at the international conference on Solid State Ionics held at Garmisch-Partenkirchen, Germany in 1987, and has just been re-founded as a legal foundation mainly thanks to the previous leadership of our society.
The main duty of the society is to promote the science and technology of ions in motion in condensed state and to organize the biennial conferences on Solid State Ionics, thereby providing an international forum for solid state ionicists from all over the world.
We enjoyed the 21st International Conference on Solid State Ionics (SSI-21) in Padua, Italy, June 14-18, 2017 with a record-breaking number of attendees and a variety of intellectual and social pleasures.
The next one, SSI-22 is already awaiting us all at the venue of Winter Olympic 2018, PyeongChang, Korea, June 16-21, 2019. We will keep you informed on the progress through this website.

Most sincerely,
Professor Han-Ill Yoo
ISSI President (2017-2019)