Rational design of carbon skeleton interfaces for highly reversible sodium metal battery anodes  

作　　者：Fenqiang Luo Taiyu Lyu Jie Liu Peiwan Guo Junkai Chen Xiaoshan Feng Dechao Wang Zhifeng Zheng 

机构地区：[1]Key Laboratory of Advanced Energy Storage Technology,Fujian Province University,Fujian Provincial Industry Technologies Development Base for New Energy,Collaborative Innovation Platform for Advanced Electrochemical Energy Storage Technology,National User-Side Energy Storage Innovation Research and Development Center,Tan Kah Kee Innovation Laboratory(IKKEM),College of Energy,Xiamen University,Xiamen 361102,Fujian,China [2]College of Environmental Science and Engineering,Fujian Normal University,Fuzhou 350007,Fujian,China [3]Department of Chemical Engineering,Tsinghua University,Beijing 100084,China

出　　处：《Journal of Energy Chemistry》2024年第5期404-413,共10页能源化学（英文版）

基　　金：supported by the National Natural Science Foundation of China(32271799,31870570);the Science and Technology Plan of Fujian Provincial,China(3502ZCQXT2022001,2020H4026,2022G02020 and 2022H6002);the Scientific Research Start–up Funding for Special Professor of Minjiang Scholars。

摘　　要：Sodium metal batteries(SMBs)have attracted increasing attention over time due to their abundance of sodium resources and low cost.However,the widespread application of SMBs as a viable technology remains a great challenge,such as uneven metallic deposition and dendrite formation during cycling.Carbon skeletons as sodiophilic hosts can alleviate the dendrite formation during the plating/stripping.For the carbon skeleton,how to rationalize the design sodiophilic interfaces between the sodium metal and carbon species remains key to developing desirable Na anodes.Herein,we fabricated four kinds of structural features for carbon skeletons using conventional calcination and flash Joule heating.The roles of conductivity,defects,oxygen content,and the distribution of graphite for the deposition of metallic sodium were discussed in detail.Based on interface engineering,the J1600 electrode,which has abundant Na-C species on its surface,showed the highest sodiophilic.There are uniform and rich F-Na species distributed in the inner solid electrolyte interface layer.This study investigated the different Na-deposition behavior in carbon hosts with distinct graphitic arrangements to pave the way for designing and optimizing advanced electrode materials.

关 键 词：Carbon skeleton Graphited structure Deposition mechanism Sodiummetal batteries 

分 类 号：TM912[电气工程—电力电子与电力传动]