Antiferroelectrics are materials which present permanent electric dipoles such that (1) they compensate each other, yielding an overall zero electric polarization, and (2) can be switched to a state where the dipoles are aligned when subject to an external electric field. Their peculiar response to electric fields make them ideal candidates for high density electric energy storage, for example for pulsed-energy applications. Yet, relatively few antiferroelectrics are known, compared to e.g. ferroelectrics or antiferromagnets. In our group at LIST we tried to come up with new antiferroelectrics (see this work) or ideas to create "artificial antiferroelectrics" (see this work).