Miniaturized　batteries　are　widely　utilized　in　microscale　devices,　and　3D　printing　technology　has　great　advantages　in　the　manufacture　of　miniaturized　battery　electrodes.　Lithium-nickel-cobalt-manganate　material　(LiNi0.5Co0.2Mn0.3O2)　is　gradually　becoming　a　mainstream　cathode　material　for　lithium-ion　batteries　due　to　its　high　energy　density,　high　rate　of　performance,　high　stability,　and　low　cost.　In　this　study,　we　prepared　lithium-ion-battery　electrodes　using　extrusion-based　three-dimensional　(3D)　printing　technology,　and　we　selected　ternary　nickel-cobalt-manganese　hydride　as　the　positive　active　material.　Subsequently,　using　deionized　water,　hydroxyethyl　cellulose,　and　other　additives,　positive　inks　was　prepared　for　the　lithium-ion　battery　that　exhibited　stable　performance　and　adequate　3D　printing.　The　effects　of　thickener　type　and　content,　ink　viscosity,　and　the　printing　process　on　the　rheological　properties　and　printability　of　the　ink　were　investigated　using　a　rheometer,　X-ray　diffraction,　a　battery　tester,　and　ANSYS　simulation　analysis.　The　results　show　that　when　the　mass　ratio　of　hydroxyethyl　cellulose/hydroxypropyl　cellulose　is　1:1　and　the　mass　fraction　is　3%,　the　viscosity　of　the　prepared　ink　is　20.26　Pa•s,　and　it　shows　good　rheology　and　uniformity　in　printing.　At　present,　the　printing　electrode　has　good　rheology,　steady　ink　outflow,　and　a　smooth　surface,　which　satisfies　the　printability　requirements　of　the　ink.　Additionally,　the　simulation　results　show　that　the　fluidity　of　the　ink　is　significantly　influenced　by　its　viscosity.　The　electrode　preparation　process,　e.g.,　ultrasonic　dispersion,　printing,　or　sintering,　does　not　lead　to　a　change　in　the　crystal　structure　of　the　electrode　material.　The　first-charge　and　discharge　capacities　of　the　electrodes　are　226.5　and　119.4　mA•h•g-1,　respectively.　After　20　cycles,　the　change　rates　of　the　charge　and　discharge　capacities　in　the　battery　decrease　and　then　tend　to　become　stable.　Lastly,　the　3D　printed　electrode　exhibits　good　cycle　stability.　©　All　right　reserved.