A new paper published in Scientific Reports identifies the existence of multiscale hysteretic pathways during the reversible electrochemical conversion of NiO. This insight clearly pinpoints one of the major roadblocks to making this class reactions viable for application in batteries. A big hat tip to Ulrike Boesenberg, a former Cabana group member, for an excellent piece of work! And remember: Scientific Reports is open access, so you may read the paper free of any charge, from anywhere in the world.