Materials with novel properties will enable energy savings in energy-intensive processes and applications and will create a new design space for renewable energy generation. Breakthroughs in materials science and engineering are needed to enable these new. . Innovative materials with increased functionality can improve the energy productivity of U. Energy storage systems, including battery energy storage systems, are critical for meeting growing energy demand. A team at HZB has examined, for the first time, individual MXene flakes to explore these processes in detail.