Phonon Engineering in Gradient Multilayers for Energy Storage Electrodes

PROBLEM: Gradient electrodes are designed to move ions smoothly from a porous outer zone to a dense storage zone, but the same gradient also grades thermal conductivity, so heat generated in the dense zone may struggle to escape through the porous outer layers. Fast charging can therefore overheat the storage zone while the surface stays cool, ageing the electrode from the inside out. A proposal that describes only the ion gradient misses the thermal gradient.

SOLUTION: IBM Cloud Ideas would host gradient electrode proposals that describe both the composition gradient and the phonon-interface reasoning for heat flow out of the storage zone, with the DFT binding prediction and cycling plan attached. Reviewers could challenge a proposal whose thermal gradient is unstated before the electrode is built.

EVIDENCE BASIS: DOCUMENTED — phonon engineering: thermal transport tuned by nanolayer interfaces and superlattices; gradient multilayers grade composition/porosity through the stack; DFT (Kohn–Sham) predicts binding; biosorption isotherms are textbook. Source: Hohenberg–Kohn 1964; Kohn–Sham 1965; Nobel Prize in Chemistry 1998.