Riveting Nucleation Enabled Long Cycling Life Calcium Metal Anodes
Abstract
AbstractCalcium metal batteries with high capacity and low cost are promising alternatives to Li‐ion batteries for large‐scale energy storage. However, its development is crucially impeded by the irreversible Ca metal anode, which is highly associated with uncontrollable Ca plating/stripping. Here, we report a new riveting strategy to regulate the nucleation and growth of a Ca metal anode in the 3D structure of a carbon nanotube film (CNF) by introducing in situ‐formed Na metal mediators. Na metal mediators are found to first deposit in the CNF substrate prior to Ca nucleation and subsequently induce dense and uniform Ca plating due to their thermodynamically favorable kinetics. Therefore, even at a high current density of 10 mA cm−2 and a high capacity of 5 mAh cm−2, it realizes the uniform nucleation and growth of dendrite‐free Ca metal. Moreover, an unprecedented cycling life of over 800 cycles is also achieved for Ca metal batteries with a high coulombic efficiency above 98.4%. This work demonstrates the significance of a riveting strategy to enable the superior performance of Ca metal batteries by regulating the plating/stripping behaviors of Ca metal anodes and paves a new way for the development of Ca metal batteries.
Article Details
Authors (17)
Yehu Han
Hefei National Research Center for Physical Sciences at the Microscale Department of Materials Science and Engineering University of Science and Technology of China Hefei 230026 P. R. China
Youzhang Guo
Hefei National Research Center for Physical Sciences at the Microscale Department of Materials Science and Engineering University of Science and Technology of China Hefei 230026 P. R. China
Jianbin Zhou
Xu Ding
State Key Laboratory of Chemo/Bio-Sensing, College of Chemistry and Chemical Engineering
YuChen Zhang
Wanxia Li
State Key Laboratory of Precision and Intelligent Chemistry
Yang Liu
Yawei Chen
Key Laboratory of Precision and Intelligent Chemistry University of Science and Technology of China Hefei 230026 P. R. China
Yulin Jie
Hefei National Research Center for Physical Sciences at the Microscale Department of Materials Science and Engineering University of Science and Technology of China Hefei 230026 P. R. China
Zhanwu Lei
State Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science
Yue Liu
Yong Guan
National Synchrotron Radiation Laboratory
Yangchao Tian
National Synchrotron Radiation Laboratory University of Science and Technology of China Hezuohua South Road 42 Hefei 230029 P. R. China
Tao Cheng
Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Jiangsu Key Laboratory of Advanced Negative Carbon Technologies
Muqing Chen
School of Environment and Civil Engineering Research Institute of Interdisciplinary Science Dongguan University of Technology Dongguan Guangdong 523808 P.R. China
Shuhong Jiao
State Key Laboratory of Precision and Intelligent Chemistry
Ruiguo Cao
State Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science