TY - JOUR
T1 - High-Performance Packaged 3D Lithium-Ion Microbatteries Fabricated Using Imprint Lithography
AU - Sun, Pengcheng
AU - Li, Xiangming
AU - Shao, Jinyou
AU - Braun, Paul V
N1 - Funding Information:
Research at the University of Illinois was supported by the Department of Defense/US Army W911NF‐17‐1‐0351 (microbattery fabrication) and the National Science Foundation Engineering Research Center for Power Optimization of Electro‐Thermal systems (POETS) with cooperative agreements EEC‐1449548 (microbattery testing). Research at Xi'an Jiaotong University was supported by the NSFC Funds (91323303 and 51975467).
Funding Information:
Research at the University of Illinois was supported by the Department of Defense/US Army W911NF-17-1-0351 (microbattery fabrication) and the National Science Foundation Engineering Research Center for Power Optimization of Electro-Thermal systems (POETS) with cooperative agreements EEC-1449548 (microbattery testing). Research at Xi'an Jiaotong University was supported by the NSFC Funds (91323303 and 51975467).
PY - 2021/1/7
Y1 - 2021/1/7
N2 - Fabrication of high-energy-density and high-power-density packaged long-cycle-life rechargeable microbatteries remains a considerable challenge. Here, high-performance microbatteries with high active volume fraction, thick, 3D-structured electrodes (V2 O5 cathode and Li metal anode) are realized through a combination of imprint lithography, self-assembly, and electrodeposition. To assist the critical challenge of hermetic packaging, the microbattery is infilled with a gel electrolyte. The packaged cell exhibits high areal energy and power densities of 1.24 J cm-2 and 75.5 mW cm-2 , respectively, and can be cycled 550 times in argon or 200 times in air with 75% capacity retention of the initial discharge capacity. An unpackaged cell, using a liquid electrolyte, provides a power density of 218 mW cm-2 . As far as it is known, the microbatteries have the highest peak power density among all reported microbatteries.
AB - Fabrication of high-energy-density and high-power-density packaged long-cycle-life rechargeable microbatteries remains a considerable challenge. Here, high-performance microbatteries with high active volume fraction, thick, 3D-structured electrodes (V2 O5 cathode and Li metal anode) are realized through a combination of imprint lithography, self-assembly, and electrodeposition. To assist the critical challenge of hermetic packaging, the microbattery is infilled with a gel electrolyte. The packaged cell exhibits high areal energy and power densities of 1.24 J cm-2 and 75.5 mW cm-2 , respectively, and can be cycled 550 times in argon or 200 times in air with 75% capacity retention of the initial discharge capacity. An unpackaged cell, using a liquid electrolyte, provides a power density of 218 mW cm-2 . As far as it is known, the microbatteries have the highest peak power density among all reported microbatteries.
KW - gel electrolytes
KW - hermetic packaging
KW - imprint lithography
KW - microbatteries
KW - thick 3D electrodes
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U2 - 10.1002/adma.202006229
DO - 10.1002/adma.202006229
M3 - Article
C2 - 33241634
SN - 0935-9648
VL - 33
SP - e2006229
JO - Advanced materials (Deerfield Beach, Fla.)
JF - Advanced materials (Deerfield Beach, Fla.)
IS - 1
M1 - 2006229
ER -