Electrochemical and structural evolution of structured V2O5 microspheres during Li-ion intercalation

被引：25

作者：

Park, Sul Ki ^{[1
,2
]}

Nakhanivej, Puritut ^{[1
]}

Yeon, Jeong Seok ^{[1
]}

Shin, Kang Ho ^{[1
]}

Dose, Wesley M. ^{[2
,3
]}

De Volder, Michael ^{[2
]}

Lee, Jin Bae ^{[4
]}

Kim, Hae Jin ^{[4
]}

Park, Ho Seok ^{[1
,5
,6
]}

机构：

[1] Sungkyunkwan Univ, Sch Chem Engn, 2066 Seoburo, Suwon 440746, South Korea

[2] Univ Cambridge, Dept Engn, Inst Mfg, Cambridge CB3 0FS, England

[3] Univ Cambridge, Dept Chem, Lensfield Rd, Cambridge CB2 1EW, England

[4] Korea Basic Sci Inst, Res Ctr Mat Anal, Daejeon, South Korea

[5] Sungkyunkwan Univ, SKKU Adv Inst Nano Technol SAINT, 2066 Seoburo, Suwon 440746, South Korea

[6] Sungkyunkwan Univ, Samsung Adv Inst Hlth Sci & Technol SAIHST, Dept Hlth Sci & Technol, 2066 Seoburo, Suwon 440746, South Korea

来源：

JOURNAL OF ENERGY CHEMISTRY | 2021年 / 55卷

关键词：

Lithium ion batteries; Vanadium pentoxide (V2O5); In-situ analysis; Phase transformation; Intercalation/de-intercalation; RAY-ABSORPTION SPECTROSCOPY; VANADIUM PENTOXIDE; CATHODE MATERIALS; LITHIUM INTERCALATION; HIGH-CAPACITY; ELECTRODES; CONVERSION; CHEMISTRY; BATTERIES; STORAGE;

D O I：

10.1016/j.jechem.2020.06.028

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

With the development of stable alkali metal anodes, V2O5 is gaining traction as a cathode material due to its high theoretical capacity and the ability to intercalate Li, Na and K ions. Herein, we report a method for synthesizing structured orthorhombic V2O5 microspheres and investigate Li intercalation/deintercalation into this material. For industry adoption, the electrochemical behavior of V2O5 as well as structural and phase transformation attributing to Li intercalation reaction must be further investigated. Our synthesized V2O5 microspheres consisted of small primary particles that were strongly joined together and exhibited good cycle stability and rate capability, triggered by reversible volume change and rapid Li ion diffusion. In addition, the reversibility of phase transformation (alpha, epsilon, delta, gamma and omega-LixV2O5) and valence state evolution (5+, 4+, and 3.5+) during intercalation/de-intercalation were studied via in-situ X-ray powder diffraction and X-ray absorption near edge structure analyses. (C) 2020 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by ELSEVIER B.V. and Science Press. All rights reserved.

引用

页码：108 / 113

页数：6

共 43 条

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