A multifunctional super‐sodiophilic coating on aluminum current collector for high-performance anode-free Na-metal batteries
Na-metal batteries (NMBs) are drawing soaring research interest as next-generation high-energy and low-cost batteries. However, the pursuit of high-reversibility Na metal anode with controllable and uniform Na plating/stripping remains a formidable challenge owing to the inhomogeneity of mass/charge transfer and high activity of Na. Herein, a 3D Zn@Al current collector is proposed by coating a 3D nanofiber-like Zn layer on the Al foil, which can suppress the dendritic Na growth to enable the high reversibility of Na plating/stripping. Experimental studies and theoretical calculations demonstrate that the 3D Zn@Al current collector greatly enhances the sodiophilicity due to the larger binding energy of Zn/NaZn with Na, and homogenizes electric field distribution owing to the 3D nanofiber-like Zn layer. Benefiting from such favorable properties, extraordinary electrochemical performances with low nucleation overpotential (5 mV at 1 mA cm), long cycle lifespan (1500 h) together with small polarization voltage (10 mV at 1 mA cm) have been achieved. Most noticeably, an anode-free NMBs with NaV(PO) as cathode can achieve excellent cycle life (with the capacity retention of 98.8% for 100 cycles). Our findings provide a simple and efficient strategy for designing functional current collector for Na anode to build high-performance anode-free NMBs.
National Natural Science Foundation of China;National Natural Science Foundation of China;National Natural Science Foundation of China;
|WOS Research Area|
Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
|WOS Accession No|
Cited Times [WOS]:0
|Document Type||Journal Article|
|Department||Academy for Advanced Interdisciplinary Studies|
1.Guangdong Provincial Key Laboratory on Functional Soft Condensed Matter,School of Materials and Energy,Guangdong University of Technology,Guangzhou,510006,China
2.Academy for Advanced Interdisciplinary Studies,Southern University of Science and Technology,Shenzhen,518055,China
Cai，Zijian,Tang，Fang,Yang，Yi,等. A multifunctional super‐sodiophilic coating on aluminum current collector for high-performance anode-free Na-metal batteries[J]. Nano Energy,2023,116.
Cai，Zijian.,Tang，Fang.,Yang，Yi.,Xu，Shitan.,Xu，Chen.,...&Rui，Xianhong.(2023).A multifunctional super‐sodiophilic coating on aluminum current collector for high-performance anode-free Na-metal batteries.Nano Energy,116.
Cai，Zijian,et al."A multifunctional super‐sodiophilic coating on aluminum current collector for high-performance anode-free Na-metal batteries".Nano Energy 116(2023).
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