articleJournal of the American Chemical SocietyMar 28, 2024Closed access

Development of High-Performance Iron-Based Phosphate Cathodes toward Practical Na-Ion Batteries

CXChunliu XuLZLin ZhouTGTeng GaoZCZhao ChenXHXueyan Hou

Chinese Academy of Sciences · Institute of Process Engineering · +3 more institutions

PubMed
Indexed incrossrefpubmed

Abstract

Iron-based phosphate cathode of Na4Fe3(PO4)2(P2O7) has been regarded as a low-cost and structurally stable cathode material for Na-ion batteries (NIBs). However, their practical application is greatly hindered by the insufficient electrochemical performance and limited energy density. Here, we report a new iron-based phosphate cathode of Na4.5Fe3.5(PO4)2.5(P2O7) with the intergrown heterostructure of the maricite-type NaFePO4 and orthorhombic Na4Fe3(PO4)2(P2O7) phases at a mole ratio of 0.5:1. Benefited from the increased composition ratio and the spontaneous activation of the maricite-type NaFePO4 phase, the as-prepared Na4.5Fe3.5(PO4)2.5(P2O7) composites deliver a reversible capacity over 130 mA h g–1 and…

Citation impact

135
total citations
FWCI
25.77
Percentile
100%
References
40
Citations per year

Authors

12

Topics & keywords

Topics
Keywords
  • Iron phosphate
  • Cathode
  • Chemistry
  • Orthorhombic crystal system
  • Electrochemistry
  • Phosphate
  • Ion
  • Phase (matter)
UN Sustainable Development Goals
  • Affordable and clean energy
No related works found for this paper.

Funding