Abstract: The development of three-functional electrocatalysts with high activity and long cycle stability to simultaneously drive hydrogen evolution reaction (HER), oxygen evolution reaction (OER) and oxygen reduction reaction (ORR) is a key challenge to promote the development of clean energy technology. In the present study, a new type of self-supporting composite electrode material is introduced : nitrogen-doped carbon nanorod array supported Co particle catalyst (Co@CNT/CC) grown in situ on carbon cloth substrate, which can be used as a multifunctional electrode for zinc-air battery and total water splitting system.In 1.0 M KOH, at a current density of 10mA·cm⁻², the HER overpotential is 178 mV and the OER is 295 mV. In addition, the diffusion limiting current density of ORR in 0.1 M KOH is 5.02 mA·cm⁻², and the half-wave potential (E_1/2) is 0.793 V.Based on this material, an all-solid-state zinc-air battery-water splitting integrated device was constructed. The power density of the flexible zinc-air battery reached 116.2 mW·cm⁻², and the voltage for total water splitting at a current density of 10 mA·cm⁻² was 1.581 V. This study provides a new idea for promoting efficient energy conversion-storage integrated devices driven by renewable energy.