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Title: A 3D Lithiophilic Mo2N–Modified Carbon Nanofiber Architecture for Dendrite–Free Lithium–Metal Anodes in a Full Cell

Abstract

Abstract The pursuit for high‐energy‐density batteries has inspired the resurgence of metallic lithium (Li) as a promising anode, yet its practical viability is restricted by the uncontrollable Li dendrite growth and huge volume changes during repeated cycling. Herein, a new 3D framework configured with Mo 2 N‐mofidied carbon nanofiber (CNF) architecture is established as a Li host via a facile fabrication method. The lithiophilic Mo 2 N acts as a homogeneously pre‐planted seed with ultralow Li nucleation overpotential, thus spatially guiding a uniform Li nucleation and deposition in the matrix. The conductive CNF skeleton effectively homogenizes the current distribution and Li‐ion flux, further suppressing Li‐dendrite formation. As a result, the 3D hybrid Mo 2 N@CNF structure facilitates a dendrite‐free morphology with greatly alleviated volume expansion, delivering a significantly improved Coulombic efficiency of ≈99.2% over 150 cycles at 4 mA cm −2 . Symmetric cells with Mo 2 N@CNF substrates stably operate over 1500 h at 6 mA cm −2 for 6 mA h cm −2 . Furthermore, full cells paired with LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NMC811) cathodes in conventional carbonate electrolytes achieve a remarkable capacity retention of 90% over 150 cycles. This work sheds new lightmore » on the facile design of 3D lithiophilic hosts for dendrite‐free lithium‐metal anodes.« less

Authors:
 [1];  [1];  [1]; ORCiD logo [1]
  1. Univ. of Texas, Austin, TX (United States)
Publication Date:
Research Org.:
Univ. of Texas, Austin, TX (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Vehicle Technologies Office (VTO); Welch Foundation; USDOE
OSTI Identifier:
2217329
Alternate Identifier(s):
OSTI ID: 1569490
Grant/Contract Number:  
EE0007762; F-1254; DE‐EE0007762
Resource Type:
Accepted Manuscript
Journal Name:
Advanced Materials
Additional Journal Information:
Journal Volume: 31; Journal Issue: 48; Journal ID: ISSN 0935-9648
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE; Batteries, Li-metal stabilization; 3D lithiophilic hosts; full cells; lithium dendrites; lithium-metal anodes; nucleation overpotential

Citation Formats

Luo, Liu, Li, Jianyu, Yaghoobnejad Asl, Hooman, and Manthiram, Arumugam. A 3D Lithiophilic Mo2N–Modified Carbon Nanofiber Architecture for Dendrite–Free Lithium–Metal Anodes in a Full Cell. United States: N. p., 2019. Web. doi:10.1002/adma.201904537.
Luo, Liu, Li, Jianyu, Yaghoobnejad Asl, Hooman, & Manthiram, Arumugam. A 3D Lithiophilic Mo2N–Modified Carbon Nanofiber Architecture for Dendrite–Free Lithium–Metal Anodes in a Full Cell. United States. https://doi.org/10.1002/adma.201904537
Luo, Liu, Li, Jianyu, Yaghoobnejad Asl, Hooman, and Manthiram, Arumugam. Mon . "A 3D Lithiophilic Mo2N–Modified Carbon Nanofiber Architecture for Dendrite–Free Lithium–Metal Anodes in a Full Cell". United States. https://doi.org/10.1002/adma.201904537. https://www.osti.gov/servlets/purl/2217329.
@article{osti_2217329,
title = {A 3D Lithiophilic Mo2N–Modified Carbon Nanofiber Architecture for Dendrite–Free Lithium–Metal Anodes in a Full Cell},
author = {Luo, Liu and Li, Jianyu and Yaghoobnejad Asl, Hooman and Manthiram, Arumugam},
abstractNote = {Abstract The pursuit for high‐energy‐density batteries has inspired the resurgence of metallic lithium (Li) as a promising anode, yet its practical viability is restricted by the uncontrollable Li dendrite growth and huge volume changes during repeated cycling. Herein, a new 3D framework configured with Mo 2 N‐mofidied carbon nanofiber (CNF) architecture is established as a Li host via a facile fabrication method. The lithiophilic Mo 2 N acts as a homogeneously pre‐planted seed with ultralow Li nucleation overpotential, thus spatially guiding a uniform Li nucleation and deposition in the matrix. The conductive CNF skeleton effectively homogenizes the current distribution and Li‐ion flux, further suppressing Li‐dendrite formation. As a result, the 3D hybrid Mo 2 N@CNF structure facilitates a dendrite‐free morphology with greatly alleviated volume expansion, delivering a significantly improved Coulombic efficiency of ≈99.2% over 150 cycles at 4 mA cm −2 . Symmetric cells with Mo 2 N@CNF substrates stably operate over 1500 h at 6 mA cm −2 for 6 mA h cm −2 . Furthermore, full cells paired with LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NMC811) cathodes in conventional carbonate electrolytes achieve a remarkable capacity retention of 90% over 150 cycles. This work sheds new light on the facile design of 3D lithiophilic hosts for dendrite‐free lithium‐metal anodes.},
doi = {10.1002/adma.201904537},
journal = {Advanced Materials},
number = 48,
volume = 31,
place = {United States},
year = {Mon Oct 07 00:00:00 EDT 2019},
month = {Mon Oct 07 00:00:00 EDT 2019}
}

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