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The lithium metal anode has been considered the most promising anode in rechargeable batteries to meet the ever-increasing requirements of high energy density. Herein, a 3D porous lithiophilic-lithiophobic-lithiophilic dual-gradient Cu-Au-ZnO-PAN-ZnO (CAZPZ) current collector is fabricated to suppress Li dendrite growth. The lithiophilic Au and ZnO at the bottom are favorable for homogeneous Li nucleation, the ZnO-PAN-ZnO skeleton provides plenty of space to accommodate deposited Li and the lithiated ZnO (Li2O/LixZn) layer can act as an artificial SEI to regulate the well-distributed Li+ flux. As a result, long-term stabilization for 1200 h at 0.5 mA cm(-2) and a low overpotential of 22 mV at 3 mA cm(-2) are achieved in symmetric cells. Moreover, the CAZPZ-Li hybrid anode exhibits superb electrochemical properties when matched with a LiFePO4 (LFP) cathode. The CAZPZ-Li||LFP full cells exhibit excellent stabilization for 1000 cycles at 5C with a high capacity retention of 97.3%. The lithiophilic-lithiophobic-lithiophilic dual-gradient design of the 3D porous current collector for the Li metal anode can be a very promising strategy to enable the practical application of Li metal batteries.
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JOURNAL OF MATERIALS CHEMISTRY A
ISSN: 2050-7488
Year: 2020
Issue: 1
Volume: 8
Page: 313-322
1 2 . 7 3 2
JCR@2020
1 0 . 8 0 0
JCR@2023
ESI Discipline: MATERIALS SCIENCE;
ESI HC Threshold:196
JCR Journal Grade:1
CAS Journal Grade:1
Cited Count:
WoS CC Cited Count: 89
SCOPUS Cited Count: 88
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 1
Affiliated Colleges: