Comparative study of Li(Li1/3Ti5/3)O4 and Li(Ni1/2-xLi2x/3Tix/3)Ti3/2O4 (x = 1/3) anodes for Li rechargeable batteries

Jongsoon Kim; Sung Wook Kim; Hyeokjo Gwon; Won Sub Yoon; Kisuk Kang

doi:10.1016/j.electacta.2009.05.058

Comparative study of Li(Li_1/3Ti_5/3)O₄ and Li(Ni_1/2-xLi_2x/3Ti_x/3)Ti_3/2O₄ (x = 1/3) anodes for Li rechargeable batteries

Jongsoon Kim
, Sung Wook Kim
, Hyeokjo Gwon
, Won Sub Yoon
, Kisuk Kang

Research output: Contribution to journal › Article › peer-review

31 Scopus citations

Abstract

A solid solution of spinel (2/3)Li(Li_1/3Ti_5/3)O₄-(1/3)Li(Ni_1/2Ti_3/2)O₄ was prepared, and its structural/electrochemical properties were compared with Li(Li_1/3Ti_5/3)O₄ to identify the effect of doping to the structural invariance of Li(Li_1/3Ti_5/3)O₄. The solid solution retained the zero strain characteristic of Li(Li_1/3Ti_5/3)O₄ during discharge/charge with an excellent cycle stability, while the rate capability was notably improved. However, a reversible broadening of the XRD peak was observed at the end of discharge, indicating some structural changes. XANES measurements showed that the oxidation state of Ti was +4 and that of Ni was +2 in the solid solution.

Original language	English
Pages (from-to)	5914-5918
Number of pages	5
Journal	Electrochimica Acta
Volume	54
Issue number	24
DOIs	https://doi.org/10.1016/j.electacta.2009.05.058
State	Published - 1 Oct 2009
Externally published	Yes

Keywords

Li(LiTi)O
Lithium rechargeable battery
Ni substitution
Spinel
Zero strain

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10.1016/j.electacta.2009.05.058

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@article{16b574dfc77741f4b0271fc42b882153,

title = "Comparative study of Li(Li1/3Ti5/3)O4 and Li(Ni1/2-xLi2x/3Tix/3)Ti3/2O4 (x = 1/3) anodes for Li rechargeable batteries",

abstract = "A solid solution of spinel (2/3)Li(Li1/3Ti5/3)O4-(1/3)Li(Ni1/2Ti3/2)O4 was prepared, and its structural/electrochemical properties were compared with Li(Li1/3Ti5/3)O4 to identify the effect of doping to the structural invariance of Li(Li1/3Ti5/3)O4. The solid solution retained the zero strain characteristic of Li(Li1/3Ti5/3)O4 during discharge/charge with an excellent cycle stability, while the rate capability was notably improved. However, a reversible broadening of the XRD peak was observed at the end of discharge, indicating some structural changes. XANES measurements showed that the oxidation state of Ti was +4 and that of Ni was +2 in the solid solution.",

keywords = "Li(LiTi)O, Lithium rechargeable battery, Ni substitution, Spinel, Zero strain",

author = "Jongsoon Kim and Kim, \{Sung Wook\} and Hyeokjo Gwon and Yoon, \{Won Sub\} and Kisuk Kang",

year = "2009",

month = oct,

day = "1",

doi = "10.1016/j.electacta.2009.05.058",

language = "English",

volume = "54",

pages = "5914--5918",

journal = "Electrochimica Acta",

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publisher = "Elsevier Ltd",

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TY - JOUR

T1 - Comparative study of Li(Li1/3Ti5/3)O4 and Li(Ni1/2-xLi2x/3Tix/3)Ti3/2O4 (x = 1/3) anodes for Li rechargeable batteries

AU - Kim, Jongsoon

AU - Kim, Sung Wook

AU - Gwon, Hyeokjo

AU - Yoon, Won Sub

AU - Kang, Kisuk

PY - 2009/10/1

Y1 - 2009/10/1

N2 - A solid solution of spinel (2/3)Li(Li1/3Ti5/3)O4-(1/3)Li(Ni1/2Ti3/2)O4 was prepared, and its structural/electrochemical properties were compared with Li(Li1/3Ti5/3)O4 to identify the effect of doping to the structural invariance of Li(Li1/3Ti5/3)O4. The solid solution retained the zero strain characteristic of Li(Li1/3Ti5/3)O4 during discharge/charge with an excellent cycle stability, while the rate capability was notably improved. However, a reversible broadening of the XRD peak was observed at the end of discharge, indicating some structural changes. XANES measurements showed that the oxidation state of Ti was +4 and that of Ni was +2 in the solid solution.

AB - A solid solution of spinel (2/3)Li(Li1/3Ti5/3)O4-(1/3)Li(Ni1/2Ti3/2)O4 was prepared, and its structural/electrochemical properties were compared with Li(Li1/3Ti5/3)O4 to identify the effect of doping to the structural invariance of Li(Li1/3Ti5/3)O4. The solid solution retained the zero strain characteristic of Li(Li1/3Ti5/3)O4 during discharge/charge with an excellent cycle stability, while the rate capability was notably improved. However, a reversible broadening of the XRD peak was observed at the end of discharge, indicating some structural changes. XANES measurements showed that the oxidation state of Ti was +4 and that of Ni was +2 in the solid solution.

KW - Li(LiTi)O

KW - Lithium rechargeable battery

KW - Ni substitution

KW - Spinel

KW - Zero strain

UR - https://www.scopus.com/pages/publications/67649206509

U2 - 10.1016/j.electacta.2009.05.058

DO - 10.1016/j.electacta.2009.05.058

M3 - Article

AN - SCOPUS:67649206509

SN - 0013-4686

VL - 54

SP - 5914

EP - 5918

JO - Electrochimica Acta

JF - Electrochimica Acta

IS - 24

ER -

Comparative study of Li(Li_1/3Ti_5/3)O₄ and Li(Ni_1/2-xLi_2x/3Ti_x/3)Ti_3/2O₄ (x = 1/3) anodes for Li rechargeable batteries

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