Journal of the Chinese Ceramic Society, Volume. 51, Issue 9, 2306(2023)
Research Progress on Modification of Anodic Current Collectors for Sodium Metal Batteries
The sodium metal anode as an ideal candidate material beyond lithium-ion battery technology has a high theoretical specific capacity (i.e., 1 165 mA·h·g-1), a low redox potential (i.e., -2.71 V vs. standard hydrogen electrode), and low cost. However, the practical application of sodium metal anode involves sodium dendrite growth and infinite volume expansion, leading to a low Coulombic efficiency and a short cycle life, and affecting its development. Recent work have dedicated much effort to solving these problems. This review represented some effective strategies in enhancing the cycling stability of sodium metal anodes, i.e., reducing the local current density of sodium metal electrodes, increasing sodium nucleation sites, and creating appropriate pores in current collectors to alleviate volume expansion. This review also discussed the main problems of sodium metal anodes and summarized the modification strategies of current collectors of electrodeposited sodium metal anodes, i.e., three-dimensional current collector design, doping or defect engineering, introduction of crystal seeds, and buffer layer modification. In addition, the future development aspects of high-safety and high-energy-density sodium metal batteries were also prospected.
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TANG Fang, LIU Congcong, HUANG Hongyang, YAO Yu, LIU Lin, RUI Xianhong, YU Yan. Research Progress on Modification of Anodic Current Collectors for Sodium Metal Batteries[J]. Journal of the Chinese Ceramic Society, 2023, 51(9): 2306
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Received: Mar. 18, 2023
Accepted: --
Published Online: Oct. 7, 2023
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CSTR:32186.14.