Synthesis of new-phased VOOH hollow dandelions and their application in lithium-ion batteries

Organization of flakes into hollow, curved architectures (see figure) by means of an aggregation-then-growth process is described, providing in addition a fine example of a V3+ nanostructure. The new-phased VOOH hollow dandelions are shown to increase very effectively the capacity of lithium-ion intercalation/deintercalation in batteries, especially at low temperatures.