A high-performance solid-state synthesized LiVOPO4 for lithium-ion batteries

Yong Shi; Hui Zhou; Sylvia Britto; Ieuan D. Seymour; Kamila M. Wiaderek; Fredrick Omenya; Natasha A. Chernova; Karena W. Chapman; Clare P. Grey; M. Stanley Whittingham

Electrochemistry Communications (Aug 2019)

A high-performance solid-state synthesized LiVOPO4 for lithium-ion batteries

Yong Shi,
Hui Zhou,
Sylvia Britto,
Ieuan D. Seymour,
Kamila M. Wiaderek,
Fredrick Omenya,
Natasha A. Chernova,
Karena W. Chapman,
Clare P. Grey,
M. Stanley Whittingham

Affiliations

Yong Shi: Chemistry and Materials Science and Engineering, Binghamton University, Binghamton, NY 13902, United States
Hui Zhou: Chemistry and Materials Science and Engineering, Binghamton University, Binghamton, NY 13902, United States
Sylvia Britto: Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom; NorthEast Center for Chemical Energy Storage (NECCES), Binghamton, NY 13902, United States
Ieuan D. Seymour: Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom; NorthEast Center for Chemical Energy Storage (NECCES), Binghamton, NY 13902, United States
Kamila M. Wiaderek: X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, United States; NorthEast Center for Chemical Energy Storage (NECCES), Binghamton, NY 13902, United States
Fredrick Omenya: Chemistry and Materials Science and Engineering, Binghamton University, Binghamton, NY 13902, United States
Natasha A. Chernova: NorthEast Center for Chemical Energy Storage (NECCES), Binghamton, NY 13902, United States
Karena W. Chapman: NorthEast Center for Chemical Energy Storage (NECCES), Binghamton, NY 13902, United States; X-ray Science Division, Advanced Photon Source, Argonne National Laboratory, Argonne, IL 60439, United States; Department of Chemistry, Stony Brook University, Stony Brook, NY 11974, United States
Clare P. Grey: Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge CB2 1EW, United Kingdom; NorthEast Center for Chemical Energy Storage (NECCES), Binghamton, NY 13902, United States
M. Stanley Whittingham: Chemistry and Materials Science and Engineering, Binghamton University, Binghamton, NY 13902, United States; NorthEast Center for Chemical Energy Storage (NECCES), Binghamton, NY 13902, United States; Corresponding author at: Chemistry and Materials Science and Engineering, Binghamton University, Binghamton, NY 13902, United States.

Journal volume & issue: Vol. 105

Abstract

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ε-LiVOPO4, a multi-electron cathode material for Li-ion batteries, suffers from structural disorder upon nanosizing by high-energy ball-milling, which impedes kinetics and promotes undesirable interfacial side reactions. This work presents a feasible way to decrease the disorder in the ball-milled composite of ε-LiVOPO4/C by post-annealing at 450 °C in an Ar atmosphere, with no reduction reaction caused by carbon and no particle growth. The post-annealed material shows recovered voltage plateaus, enhanced kinetics of Li diffusivity, and suppressed interfacial reactions. As a result, a high-performance solid-state synthesized ε-LiVOPO4 can be obtained, delivering a capacity of 270 mAh g−1 at C/5 with less than 4% degradation upon 100 cycles. Keywords: Li-ion battery, Cathode, Annealing, Structural disorder

Published in Electrochemistry Communications

ISSN: 1388-2481 (Print); 1873-1902 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Technology: Chemical technology: Industrial electrochemistry; Science: Chemistry
Website: https://www.journals.elsevier.com/electrochemistry-communications

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