Dense graphene monolith oxygen cathodes for ultrahigh volumetric energy densities

Lei Qin; Dengyun Zhai; Wei Lv; Wei Wei; Wei Yu; Yu Lei; Wei Yang; Jiaqiang Huang; Shanshan Yao; Jiang Cui; Feiyu Kang; Jang Kyo Kim; Quan Hong Yang

doi:10.1016/j.ensm.2017.06.003

Dense graphene monolith oxygen cathodes for ultrahigh volumetric energy densities

Lei Qin, Dengyun Zhai, Wei Lv, Wei Wei, Wei Yu, Yu Lei, Wei Yang, Jiaqiang Huang, Shanshan Yao, Jiang Cui, Feiyu Kang, Jang Kyo Kim, Quan Hong Yang

Mechanical & Nuclear Engineering

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

22 Scopus citations

Abstract

A convenient strategy is developed to prepare template-assisted, high density, porous graphene monolith (THPGM) cathodes with high densities for compact Li-O₂ batteries. Graphene oxide is used as the primary building block to construct condensed carbon electrodes by self-assembly followed by capillary drying. SiO₂ nanoparticles are incorporated onto the dense graphene monolith to function as sacrificial pore former. The bimodal pores of diameters ranging 1–6 and ∼ 40 nm created in the close-grained graphene monolith facilitate ion transport and oxygen diffusion, while providing sufficient space to accommodate the discharge products. The oxygen cathodes made from THPGM possess the advantageous features of high volumetric densities, a fully-developed porous structure and a robust architecture, resulting in unprecedented volumetric energy densities and excellent cyclic stability for Li-O₂ batteries.

Original language	British English
Pages (from-to)	134-139
Number of pages	6
Journal	Energy Storage Materials
Volume	9
DOIs	https://doi.org/10.1016/j.ensm.2017.06.003
State	Published - Oct 2017

Keywords

Graphene monolith
Lithium-oxygen battery
Volumetric energy density

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ensm.2017.06.003

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title = "Dense graphene monolith oxygen cathodes for ultrahigh volumetric energy densities",

abstract = "A convenient strategy is developed to prepare template-assisted, high density, porous graphene monolith (THPGM) cathodes with high densities for compact Li-O2 batteries. Graphene oxide is used as the primary building block to construct condensed carbon electrodes by self-assembly followed by capillary drying. SiO2 nanoparticles are incorporated onto the dense graphene monolith to function as sacrificial pore former. The bimodal pores of diameters ranging 1–6 and ∼ 40 nm created in the close-grained graphene monolith facilitate ion transport and oxygen diffusion, while providing sufficient space to accommodate the discharge products. The oxygen cathodes made from THPGM possess the advantageous features of high volumetric densities, a fully-developed porous structure and a robust architecture, resulting in unprecedented volumetric energy densities and excellent cyclic stability for Li-O2 batteries.",

keywords = "Graphene monolith, Lithium-oxygen battery, Volumetric energy density",

author = "Lei Qin and Dengyun Zhai and Wei Lv and Wei Wei and Wei Yu and Yu Lei and Wei Yang and Jiaqiang Huang and Shanshan Yao and Jiang Cui and Feiyu Kang and Kim, {Jang Kyo} and Yang, {Quan Hong}",

note = "Funding Information: The authors appreciate the financial support from the National Science Fund for Distinguished Young Scholars, China (No. 51525204), National Natural Science Foundation of China (Nos. U1401243, 21506212, and 51302146) and National Basic Research Program of China (2014CB932400), and Shenzhen Basic Research Project (Nos. ZDSYS20140509172959981 and JCYJ20150529164918734), as well as from the Research Grants Council (GRF Project: 613612 and 16212814) and the Innovation and Technology Commission (ITS/318/14) of Hong Kong SAR. Publisher Copyright: {\textcopyright} 2017 Elsevier B.V.",

year = "2017",

month = oct,

doi = "10.1016/j.ensm.2017.06.003",

language = "British English",

volume = "9",

pages = "134--139",

journal = "Energy Storage Materials",

issn = "2405-8297",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Dense graphene monolith oxygen cathodes for ultrahigh volumetric energy densities

AU - Qin, Lei

AU - Zhai, Dengyun

AU - Lv, Wei

AU - Wei, Wei

AU - Yu, Wei

AU - Lei, Yu

AU - Yang, Wei

AU - Huang, Jiaqiang

AU - Yao, Shanshan

AU - Cui, Jiang

AU - Kang, Feiyu

AU - Kim, Jang Kyo

AU - Yang, Quan Hong

N1 - Funding Information: The authors appreciate the financial support from the National Science Fund for Distinguished Young Scholars, China (No. 51525204), National Natural Science Foundation of China (Nos. U1401243, 21506212, and 51302146) and National Basic Research Program of China (2014CB932400), and Shenzhen Basic Research Project (Nos. ZDSYS20140509172959981 and JCYJ20150529164918734), as well as from the Research Grants Council (GRF Project: 613612 and 16212814) and the Innovation and Technology Commission (ITS/318/14) of Hong Kong SAR. Publisher Copyright: © 2017 Elsevier B.V.

PY - 2017/10

Y1 - 2017/10

N2 - A convenient strategy is developed to prepare template-assisted, high density, porous graphene monolith (THPGM) cathodes with high densities for compact Li-O2 batteries. Graphene oxide is used as the primary building block to construct condensed carbon electrodes by self-assembly followed by capillary drying. SiO2 nanoparticles are incorporated onto the dense graphene monolith to function as sacrificial pore former. The bimodal pores of diameters ranging 1–6 and ∼ 40 nm created in the close-grained graphene monolith facilitate ion transport and oxygen diffusion, while providing sufficient space to accommodate the discharge products. The oxygen cathodes made from THPGM possess the advantageous features of high volumetric densities, a fully-developed porous structure and a robust architecture, resulting in unprecedented volumetric energy densities and excellent cyclic stability for Li-O2 batteries.

AB - A convenient strategy is developed to prepare template-assisted, high density, porous graphene monolith (THPGM) cathodes with high densities for compact Li-O2 batteries. Graphene oxide is used as the primary building block to construct condensed carbon electrodes by self-assembly followed by capillary drying. SiO2 nanoparticles are incorporated onto the dense graphene monolith to function as sacrificial pore former. The bimodal pores of diameters ranging 1–6 and ∼ 40 nm created in the close-grained graphene monolith facilitate ion transport and oxygen diffusion, while providing sufficient space to accommodate the discharge products. The oxygen cathodes made from THPGM possess the advantageous features of high volumetric densities, a fully-developed porous structure and a robust architecture, resulting in unprecedented volumetric energy densities and excellent cyclic stability for Li-O2 batteries.

KW - Graphene monolith

KW - Lithium-oxygen battery

KW - Volumetric energy density

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DO - 10.1016/j.ensm.2017.06.003

M3 - Article

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SN - 2405-8297

VL - 9

SP - 134

EP - 139

JO - Energy Storage Materials

JF - Energy Storage Materials

ER -

Dense graphene monolith oxygen cathodes for ultrahigh volumetric energy densities

Abstract

Keywords

UN SDGs

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