High‐Capacity, Dendrite‐Free, and Ultrahigh‐Rate Lithium‐Metal Anodes Based on Monodisperse N‐Doped Hollow Carbon Nanospheres

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Autoren

  • Yuping Liu
  • Yanzhong Zhen
  • Taoran Li
  • Frederik Bettels
  • Tao He
  • Manhua Peng
  • Yucang Liang
  • Fei Ding
  • Lin Zhang
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Details

OriginalspracheEnglisch
Aufsatznummer2004770
FachzeitschriftSmall
Jahrgang16
Ausgabenummer44
Frühes Online-Datum8 Okt. 2020
PublikationsstatusVeröffentlicht - 5 Nov. 2020

Abstract

To unlock the great potential of lithium metal anodes for high-performance batteries, a number of critical challenges must be addressed. The uncontrolled dendrite growth and volume changes during cycling (especially, at high rates) will lead to short lifespan, low Coulombic efficiency (CE), and security risks of the batteries. Here it is reported that Li metal anodes, employing the monodisperse, lithiophilic, robust, and large-cavity N-doped hollow carbon nanospheres (NHCNSs) as the host, show remarkable performances—high areal capacity (10 mAh cm −2), high CE (up to 99.25% over 500 cycles), complete suppression of dendrite growth, dense packing of Li anode, and an extremely smooth electrode surface during repeated Li plating/stripping. In symmetric cells, a highly stable voltage hysteresis over a long cycling life >1200 h is achieved, and a low and stable voltage hysteresis can be realized even at an ultrahigh current density of 64 mA cm −2. Furthermore, the NHCNSs-based anodes, when paired with a LiFePO 4 (LFP) cathode in full cells, give rise to highly improved rate capability (104 mAh g −1 at 10 C) and cycling stability (91.4% capacity retention for 200 cycles), enabling a promising candidate for the next-generation high energy/power density batteries.

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High‐Capacity, Dendrite‐Free, and Ultrahigh‐Rate Lithium‐Metal Anodes Based on Monodisperse N‐Doped Hollow Carbon Nanospheres. / Liu, Yuping; Zhen, Yanzhong; Li, Taoran et al.
in: Small, Jahrgang 16, Nr. 44, 2004770, 05.11.2020.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Liu Y, Zhen Y, Li T, Bettels F, He T, Peng M et al. High‐Capacity, Dendrite‐Free, and Ultrahigh‐Rate Lithium‐Metal Anodes Based on Monodisperse N‐Doped Hollow Carbon Nanospheres. Small. 2020 Nov 5;16(44):2004770. Epub 2020 Okt 8. doi: 10.1002/smll.202004770
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title = "High‐Capacity, Dendrite‐Free, and Ultrahigh‐Rate Lithium‐Metal Anodes Based on Monodisperse N‐Doped Hollow Carbon Nanospheres",
abstract = "To unlock the great potential of lithium metal anodes for high-performance batteries, a number of critical challenges must be addressed. The uncontrolled dendrite growth and volume changes during cycling (especially, at high rates) will lead to short lifespan, low Coulombic efficiency (CE), and security risks of the batteries. Here it is reported that Li metal anodes, employing the monodisperse, lithiophilic, robust, and large-cavity N-doped hollow carbon nanospheres (NHCNSs) as the host, show remarkable performances—high areal capacity (10 mAh cm −2), high CE (up to 99.25% over 500 cycles), complete suppression of dendrite growth, dense packing of Li anode, and an extremely smooth electrode surface during repeated Li plating/stripping. In symmetric cells, a highly stable voltage hysteresis over a long cycling life >1200 h is achieved, and a low and stable voltage hysteresis can be realized even at an ultrahigh current density of 64 mA cm −2. Furthermore, the NHCNSs-based anodes, when paired with a LiFePO 4 (LFP) cathode in full cells, give rise to highly improved rate capability (104 mAh g −1 at 10 C) and cycling stability (91.4% capacity retention for 200 cycles), enabling a promising candidate for the next-generation high energy/power density batteries. ",
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note = "Funding Information: Y.L. and Y.Z. contributed equally to this work. Y.L. is grateful to Prof. Dr. Reiner Anwander for normal financial support for this research. Y.Z. acknowledges financial support from the China Scholarship Council (CSC).",
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T1 - High‐Capacity, Dendrite‐Free, and Ultrahigh‐Rate Lithium‐Metal Anodes Based on Monodisperse N‐Doped Hollow Carbon Nanospheres

AU - Liu, Yuping

AU - Zhen, Yanzhong

AU - Li, Taoran

AU - Bettels, Frederik

AU - He, Tao

AU - Peng, Manhua

AU - Liang, Yucang

AU - Ding, Fei

AU - Zhang, Lin

N1 - Funding Information: Y.L. and Y.Z. contributed equally to this work. Y.L. is grateful to Prof. Dr. Reiner Anwander for normal financial support for this research. Y.Z. acknowledges financial support from the China Scholarship Council (CSC).

PY - 2020/11/5

Y1 - 2020/11/5

N2 - To unlock the great potential of lithium metal anodes for high-performance batteries, a number of critical challenges must be addressed. The uncontrolled dendrite growth and volume changes during cycling (especially, at high rates) will lead to short lifespan, low Coulombic efficiency (CE), and security risks of the batteries. Here it is reported that Li metal anodes, employing the monodisperse, lithiophilic, robust, and large-cavity N-doped hollow carbon nanospheres (NHCNSs) as the host, show remarkable performances—high areal capacity (10 mAh cm −2), high CE (up to 99.25% over 500 cycles), complete suppression of dendrite growth, dense packing of Li anode, and an extremely smooth electrode surface during repeated Li plating/stripping. In symmetric cells, a highly stable voltage hysteresis over a long cycling life >1200 h is achieved, and a low and stable voltage hysteresis can be realized even at an ultrahigh current density of 64 mA cm −2. Furthermore, the NHCNSs-based anodes, when paired with a LiFePO 4 (LFP) cathode in full cells, give rise to highly improved rate capability (104 mAh g −1 at 10 C) and cycling stability (91.4% capacity retention for 200 cycles), enabling a promising candidate for the next-generation high energy/power density batteries.

AB - To unlock the great potential of lithium metal anodes for high-performance batteries, a number of critical challenges must be addressed. The uncontrolled dendrite growth and volume changes during cycling (especially, at high rates) will lead to short lifespan, low Coulombic efficiency (CE), and security risks of the batteries. Here it is reported that Li metal anodes, employing the monodisperse, lithiophilic, robust, and large-cavity N-doped hollow carbon nanospheres (NHCNSs) as the host, show remarkable performances—high areal capacity (10 mAh cm −2), high CE (up to 99.25% over 500 cycles), complete suppression of dendrite growth, dense packing of Li anode, and an extremely smooth electrode surface during repeated Li plating/stripping. In symmetric cells, a highly stable voltage hysteresis over a long cycling life >1200 h is achieved, and a low and stable voltage hysteresis can be realized even at an ultrahigh current density of 64 mA cm −2. Furthermore, the NHCNSs-based anodes, when paired with a LiFePO 4 (LFP) cathode in full cells, give rise to highly improved rate capability (104 mAh g −1 at 10 C) and cycling stability (91.4% capacity retention for 200 cycles), enabling a promising candidate for the next-generation high energy/power density batteries.

KW - N-doped hollow carbon nanospheres

KW - dendrite-free surface

KW - dense Li anode

KW - high capacity

KW - lithium metal anodes

KW - ultrahigh rate

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DO - 10.1002/smll.202004770

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SN - 1613-6810

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ER -

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