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A conformal heat-drying direct ink writing 3D printing for high-performance lithium-ion batteries

Journal Article · · Materials Today Chemistry

High areal capacity electrodes hold great potential for high-energy density lithium-ion batteries (LIBs), but their poor electrochemical kinetics limit their power density. Here, in this study, high areal capacity 3D-structured LiNi0.8Mn0.1Co0.1O2 cathodes (4.3 mAh cm-2) are prepared via 3D printing with a manner of direct ink writing. The electrodes had an enlarged electrode–electrolyte contact area, shortened diffusion pathway, and reduced intercalation-induced stress, thereby delivering enhanced rate capability and cyclability in LIBs, which is 143.6 mAh g-1 at 3C and a 60.2 % capacity retention over 800 cycles at 1C. Moreover, at electrode level, the 3D-NMC exhibits an energy and power densities of 313.1 Wh kg-1 and 657.9 W kg-1, respectively. Furthermore, the theoretical calculation suggests that reducing the gap width will be highly beneficial to the energy and power densities. This work establishes a milestone in understanding the cycling effect on the electrode local structure, including the void area and the LiNi0.8Mn0.1Co0.1O2 region, which confirms the effectiveness of 3D printing for electrode preparation.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1995699
Journal Information:
Materials Today Chemistry, Journal Name: Materials Today Chemistry Vol. 32; ISSN 2468-5194
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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