[Purposes]This paper studies and analyzes the patent technology of dry preparation of battery electrode in order to provide reference for battery industry.[Methods]This paper analyzes the main tech-nical branches of dry preparation of battery electrode and focuses on the direction of key technologies for improvement.[Findings]The fibrillation method is the key technology of dry preparation of battery elec-trode.Industrial application of this technology in positive electrodes is still difficult at present and it should be further improved in terms of binders,process/devices and additives.[Conclusions]This paper helps somehow the skilled person to understand the development in this field and provide reference for related work.
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