3D hierarchical graphene matrices enable stable Zn anodes for aqueous Zn batteries

Mu，Yongbiao1,2,3; Li，Zheng1,2,3; Wu，Bu ke1,2,3; Huang，Haodong1,2,3; Wu，Fuhai1,2,3; Chu，Youqi2; Zou，Lingfeng1,2,3; Yang，Ming2,4; He，Jiafeng2,3; Ye，Ling2; Han，Meisheng2,3; Zhao，Tianshou1,2,3; Zeng，Lin1,2,3

2023-12-01

10.1038/s41467-023-39947-8

Nature Communications   Impact Factor & Quartile

2041-1723

Metallic zinc anodes of aqueous zinc ion batteries suffer from severe dendrite and side reaction issues, resulting in poor cycling stability, especially at high rates and capacities. Herein, we develop two three-dimensional hierarchical graphene matrices consisting of nitrogen-doped graphene nanofibers clusters anchored on vertical graphene arrays of modified multichannel carbon. The graphene matrix with radial direction carbon channels possesses high surface area and porosity, which effectively minimizes the surface local current density, manipulates the Zn ions concentration gradient, and homogenizes the electric field distribution to regulate Zn deposition. As a result, the engineered matrices achieve a superior coulombic efficiency of 99.67% over 3000 cycles at 120 mA cm, the symmetric cells with the composite zinc anode demonstrates 2600 h dendrite-free cycles at 80 mA cm and 80 mAh cm. The as-designed full cell exhibits an inspiring capacity of 16.91 mAh cm. The Zn capacitor matched with activated carbon shows a superior long-term cycle performance of 20000 cycles at 40 mA cm. This strategy of constructing a 3D hierarchical structure for Zn anodes may open up a new avenue for metal anodes operating under high rates and capacities.

SCI

English

NI Journal Papers ; NI论文

First ; Corresponding

Stable Support Plan Program for Higher Education Institutions[20220815094504001] ; Shenzhen Key Laboratory of Advanced Energy Storage[ZDSYS20220401141000001]

Science & Technology - Other Topics

Multidisciplinary Sciences

WOS:001033533300026

NATURE PORTFOLIO

2-s2.0-85164756503

Scopus

1.Shenzhen Key Laboratory of Advanced Energy Storage,Southern University of Science and Technology,Shenzhen,518055,China
2.Department of Mechanical and Energy Engineering,Southern University of Science and Technology,Shenzhen,518055,China
3.SUSTech Energy Institute for Carbon Neutrality,Southern University of Science and Technology,Shenzhen,518055,China
4.College of Chemistry and Environmental Engineering,Shenzhen University,Shenzhen,518060,China

Mu，Yongbiao,Li，Zheng,Wu，Bu ke,et al. 3D hierarchical graphene matrices enable stable Zn anodes for aqueous Zn batteries[J]. Nature Communications,2023,14(1).

Mu，Yongbiao.,Li，Zheng.,Wu，Bu ke.,Huang，Haodong.,Wu，Fuhai.,...&Zeng，Lin.(2023).3D hierarchical graphene matrices enable stable Zn anodes for aqueous Zn batteries.Nature Communications,14(1).

Mu，Yongbiao,et al."3D hierarchical graphene matrices enable stable Zn anodes for aqueous Zn batteries".Nature Communications 14.1(2023).