Na_(3)P interphase reduces Na nucleation energy enabling stable anode-less sodium metal batteries  

作　　者：Haizhao Yang Haifeng Lv En Zhou Xiaohao Ji Chunnian Chen Haolei Yu Zhaowei Sun Dawei Zhang Hongchang Jin Xianghua Kong Hengxing Ji 

机构地区：[1]Department of Chemistry and Chemical Engineering,Hefei University of Technology,Hefei 230009,Anhui,China [2]Hefei National Research Center for Physical Sciences at the Microscale,School of Chemistry and Materials Science,University of Science and Technology of China,Hefei 230026,Anhui,China

出　　处：《Journal of Energy Chemistry》2024年第9期448-455,共8页能源化学（英文版）

基　　金：funding support from the National Natural Science Foundation of China (22125902, 22109150, 22279126, U2032202, and 21975243);the DNL cooperation Fund, CAS (DNL202020);the National Key R&D Program of China (no. 2022YFA1504101);the Anhui Provincial Natural Science Foundation (2108085QB65)

摘　　要：Sodium metal batteries(SMBs)are rising as viable alternatives to lithium-ion systems due to their superior energy density and sodium's relative abundance.However,SMBs face significant impediments,particularly the exceedingly high negative-to-positive capacity ratios(N/P ratios)which severely encumber energy density and hinder their practical application.Herein,a novel nucleophilic Na_(3)P interphase on aluminum foil has been designed to significantly lower the nucleation energy barrier for sodium atom deposition,resulting in a remarkable reduction of nucleation overpotential and efficient mitigation of dendritic growth at high sodium deposition of 5 mA h cm^(−2).The interphase promotes stable cycling in anode-less SMB configurations with a low N/P ratio of 1.4 and high cathode mass loading of 11.5 mg cm^(−2),and demonstrates a substantial increase in high capacity retention of 92.4%after 500 cycles even under 1 C rate condition.This innovation signifies a promising leap forward in the development of high-energy-density,anode-less SMBs,offering a potential solution to the longstanding issues of cycle stability and energy efficiency.

关 键 词：Anode-less Phosphorus anode Nucleation buffer layer Sodium metal Dendrite-free 

分 类 号：TM912[电气工程—电力电子与电力传动] O646[理学—物理化学]