Hollow and yolk-shell structured off-stoichiometric tungsten trioxide via selective leaching and hydrogenation for enhanced lithium storage properties

Wenxiu Wang; Xianhui Meng; Kan Zhang; Ping Li; Dongchul Choi; Jong Hyeok Park; Yongkeun Son

doi:10.1016/j.electacta.2016.08.112

Hollow and yolk-shell structured off-stoichiometric tungsten trioxide via selective leaching and hydrogenation for enhanced lithium storage properties

Wenxiu Wang, Xianhui Meng, Kan Zhang, Ping Li, Dongchul Choi, Jong Hyeok Park, Yongkeun Son

Department of Chemical and Biomolecular Engineering

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

9 Citations (Scopus)

Abstract

Highly porous off-stoichiometric tungsten trioxide (WO_3-σ) with hollow and yolk-shell structures have been successfully synthesized via a selective leaching strategy, following hydrogenation using PbWO₄ spheres as the starting material. It was found that the yolk-shell WO_3-σ could be obtained from hollow WO_3-σ by dividing the continuous leaching process into two intervallic processes. The unique structural features and high conductivity facilitate both ion and electron transport, greatly enhancing reversible lithium storage capacity. In comparisons of the hollow WO_3-σ and yolk-shell WO_3-σ, the yolk-shell structure exhibited more long-term stability due to extra spatial elasticity.

Original language	English
Pages (from-to)	466-472
Number of pages	7
Journal	Electrochimica Acta
Volume	215
DOIs	https://doi.org/10.1016/j.electacta.2016.08.112
Publication status	Published - 2016 Oct 10

Bibliographical note

Funding Information:
We gratefully acknowledge the National Research Foundation of Korea ( NRF-2016 R1A2B1015504 ) for financial support. D. Choi is thankful for the support from the National Research Foundation of Korea ( NRF-2015R1D1A1A01060947 ). W.X. Wang and X.H. Meng contributed equally to this work.

Publisher Copyright:
© 2016 Elsevier Ltd

All Science Journal Classification (ASJC) codes

Chemical Engineering(all)
Electrochemistry

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10.1016/j.electacta.2016.08.112

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title = "Hollow and yolk-shell structured off-stoichiometric tungsten trioxide via selective leaching and hydrogenation for enhanced lithium storage properties",

abstract = "Highly porous off-stoichiometric tungsten trioxide (WO3-σ) with hollow and yolk-shell structures have been successfully synthesized via a selective leaching strategy, following hydrogenation using PbWO4 spheres as the starting material. It was found that the yolk-shell WO3-σ could be obtained from hollow WO3-σ by dividing the continuous leaching process into two intervallic processes. The unique structural features and high conductivity facilitate both ion and electron transport, greatly enhancing reversible lithium storage capacity. In comparisons of the hollow WO3-σ and yolk-shell WO3-σ, the yolk-shell structure exhibited more long-term stability due to extra spatial elasticity.",

author = "Wenxiu Wang and Xianhui Meng and Kan Zhang and Ping Li and Dongchul Choi and Park, {Jong Hyeok} and Yongkeun Son",

note = "Funding Information: We gratefully acknowledge the National Research Foundation of Korea ( NRF-2016 R1A2B1015504 ) for financial support. D. Choi is thankful for the support from the National Research Foundation of Korea ( NRF-2015R1D1A1A01060947 ). W.X. Wang and X.H. Meng contributed equally to this work. Publisher Copyright: {\textcopyright} 2016 Elsevier Ltd",

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T1 - Hollow and yolk-shell structured off-stoichiometric tungsten trioxide via selective leaching and hydrogenation for enhanced lithium storage properties

AU - Wang, Wenxiu

AU - Meng, Xianhui

AU - Zhang, Kan

AU - Li, Ping

AU - Choi, Dongchul

AU - Park, Jong Hyeok

AU - Son, Yongkeun

N1 - Funding Information: We gratefully acknowledge the National Research Foundation of Korea ( NRF-2016 R1A2B1015504 ) for financial support. D. Choi is thankful for the support from the National Research Foundation of Korea ( NRF-2015R1D1A1A01060947 ). W.X. Wang and X.H. Meng contributed equally to this work. Publisher Copyright: © 2016 Elsevier Ltd

PY - 2016/10/10

Y1 - 2016/10/10

N2 - Highly porous off-stoichiometric tungsten trioxide (WO3-σ) with hollow and yolk-shell structures have been successfully synthesized via a selective leaching strategy, following hydrogenation using PbWO4 spheres as the starting material. It was found that the yolk-shell WO3-σ could be obtained from hollow WO3-σ by dividing the continuous leaching process into two intervallic processes. The unique structural features and high conductivity facilitate both ion and electron transport, greatly enhancing reversible lithium storage capacity. In comparisons of the hollow WO3-σ and yolk-shell WO3-σ, the yolk-shell structure exhibited more long-term stability due to extra spatial elasticity.

AB - Highly porous off-stoichiometric tungsten trioxide (WO3-σ) with hollow and yolk-shell structures have been successfully synthesized via a selective leaching strategy, following hydrogenation using PbWO4 spheres as the starting material. It was found that the yolk-shell WO3-σ could be obtained from hollow WO3-σ by dividing the continuous leaching process into two intervallic processes. The unique structural features and high conductivity facilitate both ion and electron transport, greatly enhancing reversible lithium storage capacity. In comparisons of the hollow WO3-σ and yolk-shell WO3-σ, the yolk-shell structure exhibited more long-term stability due to extra spatial elasticity.

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VL - 215

SP - 466

EP - 472

JO - Electrochimica Acta

JF - Electrochimica Acta

ER -

Hollow and yolk-shell structured off-stoichiometric tungsten trioxide via selective leaching and hydrogenation for enhanced lithium storage properties

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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