Format

Send to

Choose Destination
See comment in PubMed Commons below
Nanoscale. 2011 Oct 5;3(10):4434-9. doi: 10.1039/c1nr10950b. Epub 2011 Sep 20.

Synthesis of micro-nano hierarchical structured LiFePO₄/C composite with both superior high-rate performance and high tap density.

Author information

1
College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China.

Abstract

Efforts were made to synthesize LiFePO(4)/C composites showing both high rate capability and high tap density. First, monoclinic phase FePO(4)·2H(2)O with micro-nano hierarchical structures are synthesized using a hydrothermal method, which are then lithiated to LiFePO(4)/C also with hierarchical structures by a simple rheological phase method. The primary structures of FePO(4)·2H(2)O are nanoplates with ∼30 nm thickness, and the secondary structures of the materials are intertwisted micro-scale rings. The LiFePO(4)/C materials lithiated from these specially structured precursors also have hierarchical structures, showing discharge capacities of more than 120, 110, and 90 mAh g(-1) at rates of 5 C, 10 C and 20 C, respectively, and high tap density of 1.4 g cm(-3) as cathode materials for lithium ion batteries. Since tap density is an important factor that needs to be considered in fabricating real batteries in industry, these hierarchical structured LiFePO(4)/C moves closer to real and large-scale applications.

PMID:
21935524
DOI:
10.1039/c1nr10950b
[Indexed for MEDLINE]
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Royal Society of Chemistry
    Loading ...
    Support Center