Journal Article

FZJ-2020-00313

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Morphology-controllable synthesis of LiCoPO4 and its influence on electrochemical performance for high-voltage lithium ion batteries

Wu, X. (Corresponding author)FZJ*RWTH* ; Meledina, M.FZJ* ; Tempel, H.FZJ* ; Kungl, H.FZJ* ; Mayer, J.FZJ* ; Eichel, R.-A.FZJ*RWTH*

2020
Elsevier New York, NY [u.a.]

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Please use a persistent id in citations: http://hdl.handle.net/2128/24351  doi:10.1016/j.jpowsour.2020.227726

Abstract: LiCoPO4 is a cathode material for 5V lithium ion batteries, but in practice it often suffers from the poor electrochemical performance due to its intrinsically slow ionic diffusion. Herein, various LiCoPO4 materials with different morphology, including unstructured nanoparticle, nanorod and microrod shape, have been synthesized by solvothermal methods and a subsequent annealing process in air. Electrochemical analysis shows that the controllable morphology has an influence in electronic and ionic pathways, thus affects the electrochemical performance. The nanorod shape LiCoPO4 shows the largest discharge capacity, the best rate capability and best cycling stability. Furthermore, the apparent Li+ ion diffusion coefficients of LiCoPO4 samples were determined to investigate the influence of particle shape and the orientation on the Li+ ions migration.

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Contributing Institute(s):

1. Grundlagen der Elektrochemie (IEK-9)
2. Materialwissenschaft u. Werkstofftechnik (ER-C-2)

Research Program(s):

1. 131 - Electrochemical Storage (POF3-131) (POF3-131)
2. HITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406) (HITEC-20170406)

Appears in the scientific report 2020

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Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Current Contents - Physical, Chemical and Earth Sciences ; Ebsco Academic Search ; IF >= 5 ; JCR ; NCBI Molecular Biology Database ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

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