Lithiation dynamics in vertically aligned 1T-PtSe2 and its application in dendrite-free lithium metal batteries DOI
Tingting Xu,

Lijuan Hou,

Zhiwen Zhou

et al.

Applied Physics Letters, Journal Year: 2025, Volume and Issue: 126(20)

Published: May 19, 2025

Lithium metal anodes are highly promising for next-generation high-energy-density batteries due to their ultrahigh theoretical capacity and low electrochemical potential. However, practical application is hindered by issues such as lithium dendrite growth poor cyclability. Herein, a vertically aligned 1T-PtSe2 film on carbon cloth (PtSe2-CC) designed promote uniform Li plating via an in situ-formed Li2Pt/Li2Se interphase. Indeed, situ transmission electron microscopy studies ab initio molecular dynamics simulations elucidate the reaction mechanism between PtSe2 nanostructures metal, revealing formation of Li2Pt Li2Se phases that serve effective nucleation sites lithium. These facilitate homogeneous Li+ flux, thereby significantly enhancing performance. The PtSe2-CC electrode achieves ultralow overpotential (11.0 mV at 5 mA cm−2), stable cycling lifetime (>400 h cm−2, mAh high Coulombic efficiency (99.7% over 200 cycles), offering strategy dendrite-free batteries.

Language: Английский

Lithiation dynamics in vertically aligned 1T-PtSe2 and its application in dendrite-free lithium metal batteries DOI
Tingting Xu,

Lijuan Hou,

Zhiwen Zhou

et al.

Applied Physics Letters, Journal Year: 2025, Volume and Issue: 126(20)

Published: May 19, 2025

Lithium metal anodes are highly promising for next-generation high-energy-density batteries due to their ultrahigh theoretical capacity and low electrochemical potential. However, practical application is hindered by issues such as lithium dendrite growth poor cyclability. Herein, a vertically aligned 1T-PtSe2 film on carbon cloth (PtSe2-CC) designed promote uniform Li plating via an in situ-formed Li2Pt/Li2Se interphase. Indeed, situ transmission electron microscopy studies ab initio molecular dynamics simulations elucidate the reaction mechanism between PtSe2 nanostructures metal, revealing formation of Li2Pt Li2Se phases that serve effective nucleation sites lithium. These facilitate homogeneous Li+ flux, thereby significantly enhancing performance. The PtSe2-CC electrode achieves ultralow overpotential (11.0 mV at 5 mA cm−2), stable cycling lifetime (>400 h cm−2, mAh high Coulombic efficiency (99.7% over 200 cycles), offering strategy dendrite-free batteries.

Language: Английский

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