Composite sodium-supplement agent, and positive electrode sheet and preparation method therefor, and electricity-consumption device

Abstract

A composite sodium-supplement agent, a positive electrode sheet and preparation method therefor, and an electricity-consumption device. The composite sodium-supplement agent is located on a positive electrode sheet of a sodium-ion energy storage apparatus, and includes a first sodium-supplement agent and a second sodium-supplement agent. The first sodium-supplement agent has a first oxidation potential, and the second sodium-supplement agent has a second oxidation potential. The first oxidation potential is smaller than 3.9 V. The second oxidation potential ranges from 3.9 V to 4.4 V. The composite sodium-supplement agent has a relatively comprehensive sodium supplement function, and can form a certain gradient of oxidation potential. Full-stage sodium supplementation can be performed on a sodium-ion energy storage apparatus from an initial formation stage to a subsequent cyclic charging/discharging stage.

Dependencies are inferred from the claim text.