Sacrificial Template Strategy toward a Hollow LiNi_1/3Co_1/3Mn_1/3O₂ Nanosphere Cathode for Advanced Lithium-Ion Batteries.

ABSTRACT: In this work, a hollow LiNi_1/3Co_1/3Mn_1/3O₂ (H-NCM) nanosphere cathode with excellent electrochemical performance is developed for lithium-ion batteries. Preparation of the H-NCM nanospheres involves the sacrificial template method, in which carbon nanospheres work as the template and polyvinylpyrrolidone works as an additive. Structural and morphological analyses show that the as-prepared H-NCM nanospheres are highly uniform with diameters of approximately 50 nm and wall thicknesses of 10 nm. Electrochemical tests demonstrate that the H-NCM cathode not only manifests outstanding rate performance in the potential window of 2.5-4.5 V with high reversible specific capacities of 205.6, 194.9, 177.8, 165.9, 151.7, 126.0, and 115.3 mA h g^-1

SUBMITTER: Zhang Y 

PROVIDER: S-EPMC6645208 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature