Co3S4 porous nanosheets embedded in graphene sheets as high-performance anode materials for lithium and sodium storage

Author(s): Yichen Du ¹ ^, ² ^, ³ ^, ⁴ ^, ⁵ , Xiaoshu Zhu ⁶ ^, ³ ^, ⁴ ^, ⁵ , Xiaosi Zhou ¹ ^, ² ^, ³ ^, ⁴ ^, ⁵ , Lingyun Hu ¹ ^, ² ^, ³ ^, ⁴ ^, ⁵ , Zhihui Dai ¹ ^, ² ^, ³ ^, ⁴ ^, ⁵ , Jianchun Bao ¹ ^, ² ^, ³ ^, ⁴ ^, ⁵

Publication date (Electronic): 2015

Journal: Journal of Materials Chemistry A

Publisher: Royal Society of Chemistry (RSC)

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Abstract

A robust three-dimensional sandwich-like Co ₃S ₄ porous nanosheet/graphene sheet composite exhibits improved rate performance and cycling stability for both lithium and sodium storage.

Abstract

Co ₃S ₄ porous nanosheets embedded in flexible graphene sheets have been synthesized through a simple freeze-drying and subsequent hydrazine treatment process. The robust structural stability of the as-prepared three-dimensional sandwich-like Co ₃S ₄–PNS/GS composite affords improved rate performance and cycling stability for both lithium and sodium storage.

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Most cited references 40

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Electrodes with high power and high capacity for rechargeable lithium batteries.

Kisuk Kang, Ying Meng, Julien Bréger … (2006)

New applications such as hybrid electric vehicles and power backup require rechargeable batteries that combine high energy density with high charge and discharge rate capability. Using ab initio computational modeling, we identified useful strategies to design higher rate battery electrodes and tested them on lithium nickel manganese oxide [Li(Ni(0.5)Mn(0.5))O2], a safe, inexpensive material that has been thought to have poor intrinsic rate capability. By modifying its crystal structure, we obtained unexpectedly high rate-capability, considerably better than lithium cobalt oxide (LiCoO2), the current battery electrode material of choice.

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Self-healing chemistry enables the stable operation of silicon microparticle anodes for high-energy lithium-ion batteries.

Chao Wang, Hui Wu, Zheng Chen … (2013)

The ability to repair damage spontaneously, which is termed self-healing, is an important survival feature in nature because it increases the lifetime of most living creatures. This feature is highly desirable for rechargeable batteries because the lifetime of high-capacity electrodes, such as silicon anodes, is shortened by mechanical fractures generated during the cycling process. Here, inspired by nature, we apply self-healing chemistry to silicon microparticle (SiMP) anodes to overcome their short cycle-life. We show that anodes made from low-cost SiMPs (~3-8 µm), for which stable deep galvanostatic cycling was previously impossible, can now have an excellent cycle life when coated with a self-healing polymer. We attain a cycle life ten times longer than state-of-art anodes made from SiMPs and still retain a high capacity (up to ~3,000 mA h g(-1)). Cracks and damage in the coating during cycling can be healed spontaneously by the randomly branched hydrogen-bonding polymer used.

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Single-layered ultrasmall nanoplates of MoS2 embedded in carbon nanofibers with excellent electrochemical performance for lithium and sodium storage.

Changbao Zhu, Xiaoke Mu, Peter van Aken … (2014)

The preparation and electrochemical storage behavior of MoS2 nanodots--more precisely single-layered ultrasmall nanoplates--embedded in carbon nanowires has been studied. The preparation is achieved by an electrospinning process that can be easily scaled up. The rate performance and cycling stability of both lithium and sodium storage were found to be outstanding. The storage behavior is, moreover, highly exciting from a fundamental point of view, as the differences between the usual storage modes--insertion, conversion, interfacial storage--are beneficially blurred. The restriction to ultrasmall reaction domains allows for an almost diffusion-less and nucleation-free "conversion", thereby resulting in a high capacity and a remarkable cycling performance.

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Author and article information

Journal

Journal ID (publisher-id): JMCAET

Title: Journal of Materials Chemistry A

Abbreviated Title: J. Mater. Chem. A

Publisher: Royal Society of Chemistry (RSC)

ISSN (Print): 2050-7488

ISSN (Electronic): 2050-7496

Publication date Created: 2015

Publication date (Electronic): 2015

Volume: 3

Issue: 13

Pages: 6787-6791

Affiliations

[1 ]Jiangsu Key Laboratory of Biofunctional Materials

[2 ]School of Chemistry and Materials Science

[3 ]Nanjing Normal University

[4 ]Nanjing 210023

[5 ]P. R. China

[6 ]Center for Analysis and Testing

Article

DOI: 10.1039/C5TA00621J

SO-VID: 22f41a56-5192-4c3d-89be-4c96be76f43f

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Co3S4 porous nanosheets embedded in graphene sheets as high-performance anode materials for lithium and sodium storage

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Most cited references 40

Electrodes with high power and high capacity for rechargeable lithium batteries.

Self-healing chemistry enables the stable operation of silicon microparticle anodes for high-energy lithium-ion batteries.

Single-layered ultrasmall nanoplates of MoS2 embedded in carbon nanofibers with excellent electrochemical performance for lithium and sodium storage.

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