CMOS and beyond CMOS
Discover why imec is the premier R&D center for advanced logic & memory devices. anced logic & memory devices.
Connected health solutions
Explore the technologies that will power tomorrow’s wearable, implantable, ingestible and non-contact devices.
Life sciences
See how imec brings the power of chip technology to the world of healthcare.
Sensor solutions for IoT
Dive into innovative solutions for sensor networks, high speed networks and sensor technologies.
Artificial intelligence
Explore the possibilities and technologies of AI.
More expertises
Discover all our expertises.
Be the first to reap the benefits of imec’s research by joining one of our programs or starting an exclusive bilateral collaboration.
Build on our expertise for the design, prototyping and low-volume manufacturing of your innovative nanotech components and products.
Use one of imec’s mature technologies for groundbreaking applications across a multitude of industries such as healthcare, agriculture and Industry 4.0.
Venturing and startups
Kick-start your business. Launch or expand your tech company by drawing on the funds and knowhow of imec’s ecosystem of tailored venturing support.
/Expertise/Energy technologies/Large storage solid-state Li-ion batteries

Large storage solid-state Li-ion batteries


To make batteries suitable for electric cars or home storage, imec is developing solid state electrolytes with high conductivity (>1E-2 S/cm) to increase the energy capacity of solid state Li-ion batteries. Imec’s solid electrolyte is fully compatible with existing Li-ion battery fabrication tools as the electrolyte is applied via a liquid precursor and solidified once applied. In this way, Imec’s approach distinguishes from the typical inorganic solid powder electrolytes which needs new fabrication schemes.

High conductivity electrolyte

Imec is engineering materials at the nanoscale to develop an (inorganic) nano-composite electrolyte with high ion conductivities larger than 1E-2 S/cm and with a large electrochemical stability window (0V – 5V vs. Li+/Li).

We design solid electrolytes through the principle of heterogeneous doping.  Heterogeneous doping refers to the significantly enhanced ion transport that occurs at the interface between an oxide insulator (e.g. silica or alumina) and a salt electrolyte. This interface phenomena is exploited to create new Li-ion electrolyte materials with high ionic conductivity. The concept of using interfaces to engineer ion conductivity is termed “nanoionics”.

We use, for example, nanoporous silica, a material that we have a great deal of experience with in the chip industry. When combined with a lithium salt into a composite, faster ion conduction can be achieved as the lithium ions move through this material along the internal surface of the silica.

We have demonstrated nanocomposite electrolytes with ion conductivities exceeding several mS/cm at room temperature.

Embedded nanocomposite electrolyte

Using this high conductivity electrolyte, imec is developing a high capacity solid-state powder battery. Imec’s solid electrolyte is applied via a liquid precursor and solidified once inside the powder electrodes. As such, high density electrodes with high capacity are made.

Battery performance and reliability (life-time) are determined by the control of interfaces. If an interface is blocked, that part of the battery won’t work anymore. Imec is developing protective coatings with dually ionic and electronic conducting properties.

To increase the capacity to the order of Ah (ampere hours), imec is developing thick (>100 micrometers) electrode structures.

This work is part of EnergyVille, a center of expertise that unites KU Leuven, VITO, Hasselt University and imec for research into sustainable energy and intelligent energy systems.


Large storage systems for:

  • portable electronics (such as laptops or cameras)
  • electric cars
  • home storage systems for the smart grid
  • future smart house-hold appliances and autonomous robots

The SOLiDIFY project, coordinated by imec, aims to bring solid-state battery technology to manufacturability.

What can we do for you?

  • By participating in our research program, you can get early access to advanced research results to shorten your time-to-market, while sharing costs and lowering the risks associated with precompetitive research through collaboration with other technology leaders across the value chain.
  • Via dedicated research projects, we can provide you with state-of-the-art technology solutions to improve your industrial cell and module performance.

Why work with us?

  • Our in-depth technology knowledge is leveraged by our unique multidisciplinary science and design teams that cover a range of expertise areas, such as material and component analysis, modeling, metrology, reliability, process steps, and more.
  • We develop industry relevant solutions using industrial processes
  • Our unique infrastructure includes a state-of-the-art pre-pilot silicon photovoltaics process line and the industry’s most advanced thin-film photovoltaics R&D infrastructure.

How can we help you?

Send us your request

I'm looking for

At imec bright people build a bright future.

You could be one of these builders. Whether you are an engineer or an operator, a consultant or PhD student, we need a versatile group of people to help us create positive change.

Join the forward thinkers

Related jobs

Job opportunities