A multifunctional super‐sodiophilic coating on aluminum current collector for high-performance anode-free Na-metal batteries

Cai，Zijian1; Tang，Fang1; Yang，Yi1; Xu，Shitan1; Xu，Chen2; Liu，Lin1; Rui，Xianhong1

2023-11-01

10.1016/j.nanoen.2023.108814

Nano Energy   Impact Factor & Quartile

2211-2855

2211-3282

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.

3D current collector Anode-free Low nucleation overpotential Na-metal batteries Sodiophilicity

SCI

English

Others

National Natural Science Foundation of China[51972067];National Natural Science Foundation of China[52202221];National Natural Science Foundation of China[52222210];

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied

WOS:001073656100001

ELSEVIER

2-s2.0-85168993266

Scopus

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).