Article

Ti─O─C Bonding at 2D Heterointerfaces of 3D Composites for Fast Sodium Ion Storage at High Mass Loading Level

Diwen YuSchool of Energy and Power Engineering North University of China Taiyuan 030051 ChinaKaixuan GuoSchool of Energy and Power Engineering North University of China Taiyuan 030051 ChinaFengxiao HouSchool of Energy and Power Engineering North University of China Taiyuan 030051 ChinaYangang ZhangSchool of Energy and Power Engineering North University of China Taiyuan 030051 ChinaXiaolin YeSchool of Energy and Power Engineering North University of China Taiyuan 030051 ChinaYaohui ZhangSchool of Energy and Power Engineering North University of China Taiyuan 030051 ChinaPuguang JiTianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology School of Material Science and Engineering Hebei University of Technology Tianjin 300130 ChinaUmedjon KhalilovArifov Institute of Ion‐Plasma and Laser Technologies Academy of Sciences of the Republic of Uzbekistan Tashkent 100077 UzbekistanGongkai WangTianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology School of Material Science and Engineering Hebei University of Technology Tianjin 300130 ChinaXin ZhangTianjin Key Laboratory of Materials Laminating Fabrication and Interface Control Technology School of Material Science and Engineering Hebei University of Technology Tianjin 300130 ChinaKai WangSchool of Energy and Power Engineering North University of China Taiyuan 030051 ChinaYuexian SongSchool of Energy and Power Engineering North University of China Taiyuan 030051 ChinaXiaobin ZhongSchool of Energy and Power Engineering North University of China Taiyuan 030051 ChinaHongtao SunThe Harold and Inge Marcus Department of Industrial Engineering The Pennsylvania State University State College University Park PA 16802 USAJian ZhuCollege of Chemistry and Chemical Engineering Hunan University Changsha 410082 ChinaJunfei LiangSchool of Energy and Power Engineering North University of China Taiyuan 030051 ChinaHua WangSchool of Chemistry Beihang University Beijing 100191 China

Smalljournal2024en

ABI

Abstract

Abstract 3D composite electrodes have shown extraordinary promise as high mass loading electrode materials for sodium ion batteries (SIBs). However, they usually show poor rate performance due to the sluggish Na + kinetics at the heterointerfaces of the composites. Here, a 3D MXene‐reduced holey graphene oxide (MXene‐RHGO) composite electrode with Ti─O─C bonding at 2D heterointerfaces of MXene and RHGO is developed. Density functional theory (DFT) calculations reveal the built‐in electric fields (BIEFs) are enhanced by the formation of bridged interfacial Ti─O─C bonding, that lead to not only faster diffusion of Na + at the heterointerfaces but also faster adsorption and migration of Na + on the MXene surfaces. As a result, the 3D composite electrodes show impressive properties for fast Na + storage. Under high current density of 10 mA cm −2 , the 3D MXene‐RHGO composite electrodes with high mass loading of 10 mg cm −2 achieve a strikingly high and stable areal capacity of 3 mAh cm −2 , which is same as commercial LIBs and greatly exceeds that of most reported SIBs electrode materials. The work shows that rationally designed bonding at the heterointerfaces represents an effective strategy for promoting high mass loading 3D composites electrode materials forward toward practical SIBs applications.

Topics

MXene and MAX Phase Materials Advancements in Battery Materials Electromagnetic wave absorption materials

Identifiers

DOI: 10.1002/smll.202312167

Citations and references

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