文献类型：期刊文献

英文题名：Enhanced Na-Ion Storage of the NASICON Cathode through Synergistic Bulk Lattice Modulation and Porous Architecture

作者：Guo, Min[1];Zhang, Yawei[1];Qi, Shaohong[1];Liu, Tiancun[1];Ying, Jiadi[1];Wang, Yeqing[1];Chai, Yanfu[1];Gao, Guohua[2];Yu, Zhixin[1]

机构：[1]Shaoxing Univ, Inst New Energy, Sch Chem & Chem Engn, Shaoxing 312000, Peoples R China;[2]Tongji Univ, Sch Phys & Sci Engn, Shanghai 201804, Peoples R China

年份：2023

卷号：37

期号：22

起止页码：17575

外文期刊名：ENERGY & FUELS

收录：SCI-EXPANDED(收录号：WOS:001096746900001)、、EI(收录号：20234815137678)、Scopus(收录号：2-s2.0-85178200537)、WOS

基金：This work was supported by the National Natural Science Foundation of China (Nos. 22208220 and 52304408), Zhejiang Provincial Natural Science Foundation of China (Nos. LQ23B030005 and LQ23E030016), and China Postdoctoral Science Foundation (No. 2023M733154).

语种：英文

外文关键词：Electric conductivity - Electrolytes - Materials handling - Metal ions - Morphology - Nickel compounds - Sodium compounds - Sodium-ion batteries

外文摘要：A NASICON-type Na3V2(PO4)(3) cathode, known for its stable three-dimensional Na+ diffusion channels, has been recognized as a prevailing candidate for sodium-ion batteries. However, the practical implementation of this cathode has been hindered by severe capacity degradation and inferior rate capability, resulting from its intrinsic poor electronic conductivity. Here, this work reports Ni2+ doping Na3V2(PO4)(3) materials accompanied by hierarchical porous morphology to strengthen ion migration and improve electronic conductivity. Owing to the porous structure and lattice modulation, the as-synthesized material displays a large surface area, short transport distance, easy electrolyte infiltration, and rapid electron/ion transportation. These multiple effects contribute to the superior rate and cycling stabilities of the modified NVP compared to those of its bare counterpart. When explored as a cathode for SIB, the NVP-Ni0.05 exhibits impressive rate capability (88.1 mAh g(-1) at 20C) and excellent cycling stability (93.8% capacity retention after 1500 cycles at 10C). This study provides a feasible strategy for developing a high-rate and long cycle-life electrode material and could motivate researchers to develop other sodium-based cathode materials.