Journal
ENERGY STORAGE MATERIALS
Volume 24, Issue -, Pages 336-342Publisher
ELSEVIER
DOI: 10.1016/j.ensm.2019.07.041
Keywords
3D printing; Li metal anode; Ultrahigh areal capacity; High rate capability; MOF-derived carbon framework
Funding
- National Research Foundation (NRF, Singapore) [NRF2016NRF-CRP001-023]
- Ministry of Education Singapore [MOE2016-T2-2-138]
- NUS Strategic Research Fund [R-261-509-001-646, R-261-509-001-733, R-261-510-001-646, R-261-510-001-733]
- National Research Foundation Singapore [NRF-CRP16-2015-01 (R-284-000-159-281), NRF2017NRF-NSFC001-007]
- Singapore MOE [R143-000-A29-112]
Ask authors/readers for more resources
Lithium metal is the ultimate solution for high-energy density batteries, but is currently plagued from commercialization by the safety issue due to the uncontrollable Li dendrite growth. It would be worse when plating a higher areal capacity of lithium operating under higher current densities. Herein, we develop a novel N-doped carbon framework by extrusion-based 3D-printing of Zn-MOF precursor, which possess a hierarchically porous structure and a large specific surface area. Such unique structural features simultaneously suppress the dendrite growth, accommodate massive Li deposition, stabilize Li/electrolyte interface, and dissipate high current densities. As a result, the 3D-printed N-doped carbon framework (3DP-NC) enables an ultrahigh areal capacity of 30 mAh cm(-2) at the high rate of 10 mA cm(-2) and a high average Coulombic efficiency of 97.9% after a long life-span of similar to 2000 h at the rate of 1 mA cm(-2). Moreover, the Li-plated 3DP-NC anode is capable of working properly under an ultrahigh rate of 20 mA cm(-2) in symmetric cells with low overpotentials and manifesting a much-enhanced rate capability in full cells with a 3D-printed LiFePO4 cathode. The 3D-printing strategy demonstrated in the present work provides a promising new avenue for the fabrication of high-performance Li-metal batteries.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available