GeO2-SnCoC composite anode material for lithium-ion batteries

Bo Liu; Ali Abouimrane; Mahalingam Balasubramanian; Yang Ren; Khalil Amine

doi:10.1021/jp411462v

GeO₂-SnCoC composite anode material for lithium-ion batteries

Bo Liu
, Ali Abouimrane
, Mahalingam Balasubramanian
, Yang Ren
, Khalil Amine

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

32 Citations (Scopus)

Abstract

Current methods for extending the cycle life of volume-expanded anode materials for lithium-ion batteries mainly focus on development of nanosize three-dimensional structures and composite materials. We propose a novel anode material of GeO₂-Sn₃₀Co₃₀C₄₀ that is synthesized by high energy ball milling (SPEX). This material depends on the nanosized and composite concept, which combines the advantageous properties of Sn-Co-C (long cycle life) and GeO₂ (high capacity). The composite anode shows a reversible capacity over 800 mAh/g with good capacity retention. Furthermore, the first-cycle Coulombic efficiency is 80%, much higher than the 34.6% obtained for pure GeO₂. Pair distribution function measurements indicated the reversible reaction of GeO₂ and SnO₂, which is the key factor in the improved Coulombic efficiency. This reversibility can be explained by the catalytic role of Co₃Ge₂ phase, which facilities the conversion reactions of metal oxides and acts as an electronic conductive component for the composite anode. © 2014 American Chemical Society.

Original language	English
Pages (from-to)	3960-3967
Journal	The Journal of Physical Chemistry C
Volume	118
Issue number	8
DOIs	https://doi.org/10.1021/jp411462v
Publication status	Published - 27 Feb 2014
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

UN SDGs

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

SDG 7 Affordable and Clean Energy

Access Output

10.1021/jp411462v

Other Access Options

Check CityUHK Library

Permanent Link

Right click to copy link

Cite this

@article{a8fdb772f4cb4356a6ec8e04b98b3a91,

title = "GeO2-SnCoC composite anode material for lithium-ion batteries",

abstract = "Current methods for extending the cycle life of volume-expanded anode materials for lithium-ion batteries mainly focus on development of nanosize three-dimensional structures and composite materials. We propose a novel anode material of GeO2-Sn30Co30C40 that is synthesized by high energy ball milling (SPEX). This material depends on the nanosized and composite concept, which combines the advantageous properties of Sn-Co-C (long cycle life) and GeO2 (high capacity). The composite anode shows a reversible capacity over 800 mAh/g with good capacity retention. Furthermore, the first-cycle Coulombic efficiency is 80\%, much higher than the 34.6\% obtained for pure GeO2. Pair distribution function measurements indicated the reversible reaction of GeO2 and SnO2, which is the key factor in the improved Coulombic efficiency. This reversibility can be explained by the catalytic role of Co3Ge2 phase, which facilities the conversion reactions of metal oxides and acts as an electronic conductive component for the composite anode. {\textcopyright} 2014 American Chemical Society.",

author = "Bo Liu and Ali Abouimrane and Mahalingam Balasubramanian and Yang Ren and Khalil Amine",

note = "Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].",

year = "2014",

month = feb,

day = "27",

doi = "10.1021/jp411462v",

language = "English",

volume = "118",

pages = "3960--3967",

journal = "The Journal of Physical Chemistry C",

issn = "1932-7447",

publisher = "American Chemical Society",

number = "8",

}

TY - JOUR

T1 - GeO2-SnCoC composite anode material for lithium-ion batteries

AU - Liu, Bo

AU - Abouimrane, Ali

AU - Balasubramanian, Mahalingam

AU - Ren, Yang

AU - Amine, Khalil

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2014/2/27

Y1 - 2014/2/27

N2 - Current methods for extending the cycle life of volume-expanded anode materials for lithium-ion batteries mainly focus on development of nanosize three-dimensional structures and composite materials. We propose a novel anode material of GeO2-Sn30Co30C40 that is synthesized by high energy ball milling (SPEX). This material depends on the nanosized and composite concept, which combines the advantageous properties of Sn-Co-C (long cycle life) and GeO2 (high capacity). The composite anode shows a reversible capacity over 800 mAh/g with good capacity retention. Furthermore, the first-cycle Coulombic efficiency is 80%, much higher than the 34.6% obtained for pure GeO2. Pair distribution function measurements indicated the reversible reaction of GeO2 and SnO2, which is the key factor in the improved Coulombic efficiency. This reversibility can be explained by the catalytic role of Co3Ge2 phase, which facilities the conversion reactions of metal oxides and acts as an electronic conductive component for the composite anode. © 2014 American Chemical Society.

AB - Current methods for extending the cycle life of volume-expanded anode materials for lithium-ion batteries mainly focus on development of nanosize three-dimensional structures and composite materials. We propose a novel anode material of GeO2-Sn30Co30C40 that is synthesized by high energy ball milling (SPEX). This material depends on the nanosized and composite concept, which combines the advantageous properties of Sn-Co-C (long cycle life) and GeO2 (high capacity). The composite anode shows a reversible capacity over 800 mAh/g with good capacity retention. Furthermore, the first-cycle Coulombic efficiency is 80%, much higher than the 34.6% obtained for pure GeO2. Pair distribution function measurements indicated the reversible reaction of GeO2 and SnO2, which is the key factor in the improved Coulombic efficiency. This reversibility can be explained by the catalytic role of Co3Ge2 phase, which facilities the conversion reactions of metal oxides and acts as an electronic conductive component for the composite anode. © 2014 American Chemical Society.

UR - https://www.scopus.com/pages/publications/84896815990

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84896815990&origin=recordpage

U2 - 10.1021/jp411462v

DO - 10.1021/jp411462v

M3 - RGC 21 - Publication in refereed journal

SN - 1932-7447

VL - 118

SP - 3960

EP - 3967

JO - The Journal of Physical Chemistry C

JF - The Journal of Physical Chemistry C

IS - 8

ER -