Compositing pine pollen derived carbon matrix with Na4FeV(PO4)3 nanoparticle for cost-effective sodium-ion batteries cathode

Cong Wang; Jieying Xiu; Kunxi Lü; Yafeng Li; Mingdeng Wei

doi:10.1016/j.jcis.2024.04.143

Compositing pine pollen derived carbon matrix with Na₄FeV(PO₄)₃ nanoparticle for cost-effective sodium-ion batteries cathode

J Colloid Interface Sci. 2024 Aug:667:510-519. doi: 10.1016/j.jcis.2024.04.143. Epub 2024 Apr 21.

Authors

Cong Wang¹, Jieying Xiu¹, Kunxi Lü¹, Yafeng Li², Mingdeng Wei³

Affiliations

¹ Fujian Key Laboratory of Electrochemical Energy Storage Materials, Fuzhou University, Fuzhou 350116, China.
² Fujian Key Laboratory of Electrochemical Energy Storage Materials, Fuzhou University, Fuzhou 350116, China; State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, Fujian 350002, China. Electronic address: liyf@fzu.edu.cn.
³ Fujian Key Laboratory of Electrochemical Energy Storage Materials, Fuzhou University, Fuzhou 350116, China; State Key Laboratory of Photocatalysis on Energy and Environment, Fuzhou University, Fuzhou, Fujian 350002, China. Electronic address: wei-mingdeng@fzu.edu.cn.

PMID: 38653072
DOI: 10.1016/j.jcis.2024.04.143

Abstract

Na super-ion conductor type material Na₃V₂(PO₄)₃ has been widely researched as the cathode of sodium-ion batteries (SIBs) in recent years, but the unsatisfying cost of Na₃V₂(PO₄)₃ impedes its wide application in SIBs. In this study, iron element is used to replace part of vanadium in Na₃V₂(PO₄)₃ to reduce its expense, and pine pollen is applied for the first time as a very effective carbon source to improve the performance of Na₄FeV(PO₄)₃. The fabricated composite material achieves a capacity of 105 mA h g^-1 under 0.2 C and fascinating cycling stability over 94 % under 2 C for 500 cycles and 98 % under 10 C for 1000 cycles. The excellent cycle performance is caused by the involvement of pine pollen that acts as a carbon matrix to enhance the electron conductivity and block the agglomeration of active material effectively, thus the well-dispersed nano sized Na₄FeV(PO₄)₃ shortens the diffusion path of sodium ion and gains a remarkable rate capability. Moreover, the distinguished reversibility during the charge and discharge procedures is ascribed also to the robust structure of Na₄FeV(PO₄)₃. This work provides an efficient route to realize the economic cathode material of SIBs with good performance.

Keywords: Cathode materials; Na super-ion conductor; Pine pollen bio-mass; Sodium-ion batteries.