文献类型：期刊文献

英文题名：Engineering a superionic conductor surface enables fast Na⁺ transport kinetics for high-stable layered oxide cathode

作者：Zhang, Yawei[1];Guo, Min[1];Ding, Yi[1];Lu, Song[1];Ying, Jiadi[1];Wang, Yeqing[1];Liu, Tiancun[1];Yu, Zhixin[1];Ma, Zi-Feng[2,3]

机构：[1]Shaoxing Univ, Inst New Energy, Sch Chem & Chem Engn, Shaoxing 312000, Peoples R China;[2]Shanghai Jiao Tong Univ, Shanghai Electrochem Energy Devices Res Ctr, Frontiers Sci Ctr Transformat Mol, Sch Chem & Chem Engn, Shanghai 200240, Peoples R China;[3]Zhejiang Natrium Energy Co Ltd, Shaoxing 312000, Peoples R China

年份：2025

卷号：678

起止页码：608

外文期刊名：JOURNAL OF COLLOID AND INTERFACE SCIENCE

收录：SCI-EXPANDED(收录号：WOS:001321644400001)、、WOS

基金：This work was supported by the National Natural Science Foundation of China (No. 22208220) and Zhejiang Provincial Natural Science Foundation of China (No. LQ23B030005) .

语种：英文

外文关键词：Sodium-ion batteries; Layered transition metal oxides; NaNi1/3Mn1/3Fe1/3O2; Na3V2(PO4)(3); Fast ionic conductor interface

外文摘要：Unstable cathode/electrolyte interphase and severe interfacial side reaction have long been identified as the main cause for the failure of layered oxide cathode during fast charging and long-term cycling for rechargeable sodium-ion batteries. Here, we report a superionic conductor (Na3V2(PO4)(3), NVP) bonding surface strategy for O3-type layered NaNi1/Fe-3(1)/Mn-3(1)/O-3(2) (NFM) cathode to suppress electrolyte corrosion and near-surface structure deconstruction, especially at high operating potential. The strong bonding affinity at the NVP/NFM contact interface stabilizes the crystal structure by inhibiting surface parasitic reactions and transition metal dissolution, thus significantly improving the phase change reversibility at high desodiation state and prolonging the lifespan of NFM cathode. Due to the high-electron-conductivity of NFM, the redox activity of NVP is also enhanced to provide additional capacity. Therefore, benefiting from the fast ion transport kinetics and electrochemical Na+-storage activity of NVP, the composite NFM@NVP electrode displays a high initial coulombic efficiency of 95.5 % at 0.1 C and excellent rate capability (100 mAh g(-1) at 20 C) within high cutoff voltage of 4.2 V. The optimized cathode also delivers preeminent cyclic stability with similar to 80 % capacity retention after 500 cycles at 2 C. This work sheds light on a facile and universal strategy on improving interphase stability to develop fast-charging and sustainable batteries.