Ten Thousand-Cycle Ultrafast Energy Storage of Wadsley-Roth Phase Fe-Nb Oxides with a Desolvation Promoting Interfacial Layer

Yang Yang; He Zhu; Fei Yang; Fan Yang; Dongjiang Chen; Zhipeng Wen; Dongzheng Wu; Minghui Ye; Yufei Zhang; Jinbao Zhao; Qi Liu; Xihong Lu; Meng Gu; Cheng Chao Li; Weidong He

doi:10.1021/acs.nanolett.1c03478

Ten Thousand-Cycle Ultrafast Energy Storage of Wadsley-Roth Phase Fe-Nb Oxides with a Desolvation Promoting Interfacial Layer

Nano Lett. 2021 Nov 24;21(22):9675-9683. doi: 10.1021/acs.nanolett.1c03478. Epub 2021 Oct 20.

Authors

Yang Yang¹, He Zhu², Fei Yang³, Fan Yang⁴, Dongjiang Chen⁵, Zhipeng Wen¹, Dongzheng Wu¹, Minghui Ye⁶, Yufei Zhang⁶, Jinbao Zhao¹, Qi Liu², Xihong Lu⁴, Meng Gu³, Cheng Chao Li⁶, Weidong He⁵

Affiliations

¹ State Key Lab of Physical Chemistry of Solid Surfaces, State-Province Joint Engineering Laboratory of Power Source Technology for New Energy Vehicle, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P.R. China.
² Department of Physics, City University of Hong Kong, Hong Kong 999077, P.R. China.
³ Department of Materials Science and Engineering, Southern University of Science and Technology (SUSTech), Shenzhen 518055, P.R. China.
⁴ MOE of the Key Laboratory of Bioinorganic and Synthetic Chemistry, The Key Lab of Low-Carbon Chem and Energy Conservation of Guangdong Province, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China.
⁵ National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Center for Composite Materials and Structures, Harbin Institute of Technology, Harbin 150080, P.R. China.
⁶ School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, P.R. China.

PMID: 34668713
DOI: 10.1021/acs.nanolett.1c03478

Abstract

Developing advanced electrode materials with enhanced charge-transfer kinetics is the key to realizing fast energy storage technologies. Commonly used modification strategies, such as nanoengineering and carbon coating, are mainly focused on electron transfer and bulk Li⁺ diffusion. Nonetheless, the desolvation behavior, which is considered as the rate-limiting process for charge-storage, is rarely studied. Herein, we designed a nitridation layer on the surface of Wadsley-Roth phase FeNb₁₁O₂₉ (FNO_-x@N) to act as a desolvation promoter. Theoretical calculations demonstrate that the adsorption and desolvation of solvated Li⁺ is efficiently improved at FNO_-x@N/electrolyte interphase, leading to the reduced desolvation energy barrier. Moreover, the nitridation layer can also help to prevent solvent cointercalation during Li⁺ insertion, leading to advantageous shrinkage of block area and reduced volume change of lattice cell during cycling. Consequently, FNO_-x@N exhibits a high-rate capacity of 129.7 mAh g^-1 with negligible capacity decay for 10 000 cycles.

Keywords: Wadsley−Roth phase FeNb11O29; charge-transfer kinetics; desolvation promoting interfacial layer; in situ XRD and Raman spectroscopies; ultrafast energy storage.