LiFePO 4 Particles Embedded in Fast Bifunctional Conductor rGO&C@Li 3 V 2 (PO 4 ) 3 Nanosheets as Cathodes for High-Performance Li-Ion Hybrid Capacitors

Yue Zhang; Zihe Zhang; Yakun Tang; Dianzeng Jia; Yudai Huang; Weikong Pang; Zaiping Guo; Zhen Zhou

doi:10.1002/adfm.201807895

LiFePO 4 Particles Embedded in Fast Bifunctional Conductor rGO&C@Li 3 V 2 (PO 4 ) 3 Nanosheets as Cathodes for High-Performance Li-Ion Hybrid Capacitors

Yue Zhang, Zihe Zhang, Yakun Tang, Dianzeng Jia^*, Yudai Huang, Weikong Pang, Zaiping Guo, Zhen Zhou

^*Corresponding author for this work

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

60 Citations (Scopus)

Abstract

The sluggish kinetics of Faradaic reactions in bulk electrodes is a significant obstacle to achieve high energy and power density in energy storage devices. Herein, a composite of LiFePO 4 particles trapped in fast bifunctional conductor rGO&C@Li 3 V 2 (PO 4 ) 3 nanosheets is prepared through an in situ competitive redox reaction. The composite exhibits extraordinary rate capability (71 mAh g −1 at 15 A g −1 ) and remarkable cycling stability (0.03% decay per cycle over 1000 cycles at 10 A g −1 ). Improved extrinsic pseudocapacitive contribution is the origin of fast kinetics, which endows this composite with high energy and power density, since the unique 2D nanosheets and embedded ultrafine LiFePO 4 nanoparticles can shorten the ion and electron diffusion length. Even applied to Li-ion hybrid capacitors, the obtained devices still achieve high power density of 3.36 kW kg −1 along with high energy density up to 77.8 Wh kg −1 . Density functional theory computations also validate that the remarkable rate performance is facilitated by the desirable ionic and electronic conductivity of the composite. © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Original language	English
Article number	1807895
Number of pages	11
Journal	Advanced Functional Materials
Volume	29
Issue number	17
DOIs	https://doi.org/10.1002/adfm.201807895
Publication status	Published - 25 Apr 2019
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 <a href="mailto:[email protected]">[email protected]</a>.

Funding

This work was financially supported by National Natural Science Foundation of China (21771157) and the Doctoral Innovation Program of Xinjiang University (XJUBSCX-2016011).

Research Keywords

bifunctional conductor
cathode
Li-ion hybrid capacitors
Li 3 V 2 (PO 4 ) 3
LiFePO 4

UN SDGs

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

Access Output

10.1002/adfm.201807895

Other Access Options

Check CityUHK Library

Permanent Link

Right click to copy link

Fingerprint

Dive into the research topics of 'LiFePO 4 Particles Embedded in Fast Bifunctional Conductor rGO&C@Li 3 V 2 (PO 4 ) 3 Nanosheets as Cathodes for High-Performance Li-Ion Hybrid Capacitors'. Together they form a unique fingerprint.

Cite this

Zhang, Y., Zhang, Z., Tang, Y., Jia, D., Huang, Y., Pang, W., Guo, Z., & Zhou, Z. (2019). LiFePO 4 Particles Embedded in Fast Bifunctional Conductor rGO&C@Li 3 V 2 (PO 4 ) 3 Nanosheets as Cathodes for High-Performance Li-Ion Hybrid Capacitors. Advanced Functional Materials, 29(17), Article 1807895. https://doi.org/10.1002/adfm.201807895

@article{46fdc076fb1a42dfae3d902b9158b679,

title = "LiFePO 4 Particles Embedded in Fast Bifunctional Conductor rGO&C@Li 3 V 2 (PO 4 ) 3 Nanosheets as Cathodes for High-Performance Li-Ion Hybrid Capacitors",

abstract = "The sluggish kinetics of Faradaic reactions in bulk electrodes is a significant obstacle to achieve high energy and power density in energy storage devices. Herein, a composite of LiFePO 4 particles trapped in fast bifunctional conductor rGO&C@Li 3 V 2 (PO 4 ) 3 nanosheets is prepared through an in situ competitive redox reaction. The composite exhibits extraordinary rate capability (71 mAh g −1 at 15 A g −1 ) and remarkable cycling stability (0.03% decay per cycle over 1000 cycles at 10 A g −1 ). Improved extrinsic pseudocapacitive contribution is the origin of fast kinetics, which endows this composite with high energy and power density, since the unique 2D nanosheets and embedded ultrafine LiFePO 4 nanoparticles can shorten the ion and electron diffusion length. Even applied to Li-ion hybrid capacitors, the obtained devices still achieve high power density of 3.36 kW kg −1 along with high energy density up to 77.8 Wh kg −1 . Density functional theory computations also validate that the remarkable rate performance is facilitated by the desirable ionic and electronic conductivity of the composite. {\textcopyright} 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",

keywords = "bifunctional conductor, cathode, Li-ion hybrid capacitors, Li 3 V 2 (PO 4 ) 3, LiFePO 4",

author = "Yue Zhang and Zihe Zhang and Yakun Tang and Dianzeng Jia and Yudai Huang and Weikong Pang and Zaiping Guo and Zhen Zhou",

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 <a href={"}mailto:[email protected]{"}>[email protected]</a>.",

year = "2019",

month = apr,

day = "25",

doi = "10.1002/adfm.201807895",

language = "English",

volume = "29",

journal = "Advanced Functional Materials",

issn = "1616-301X",

publisher = "Wiley-VCH Verlag GmbH",

number = "17",

}

Zhang, Y, Zhang, Z, Tang, Y, Jia, D, Huang, Y, Pang, W, Guo, Z & Zhou, Z 2019, 'LiFePO 4 Particles Embedded in Fast Bifunctional Conductor rGO&C@Li 3 V 2 (PO 4 ) 3 Nanosheets as Cathodes for High-Performance Li-Ion Hybrid Capacitors', Advanced Functional Materials, vol. 29, no. 17, 1807895. https://doi.org/10.1002/adfm.201807895

LiFePO 4 Particles Embedded in Fast Bifunctional Conductor rGO&C@Li 3 V 2 (PO 4 ) 3 Nanosheets as Cathodes for High-Performance Li-Ion Hybrid Capacitors. / Zhang, Yue; Zhang, Zihe; Tang, Yakun et al.
In: Advanced Functional Materials, Vol. 29, No. 17, 1807895, 25.04.2019.

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

TY - JOUR

T1 - LiFePO 4 Particles Embedded in Fast Bifunctional Conductor rGO&C@Li 3 V 2 (PO 4 ) 3 Nanosheets as Cathodes for High-Performance Li-Ion Hybrid Capacitors

AU - Zhang, Yue

AU - Zhang, Zihe

AU - Tang, Yakun

AU - Jia, Dianzeng

AU - Huang, Yudai

AU - Pang, Weikong

AU - Guo, Zaiping

AU - Zhou, Zhen

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 <a href="mailto:[email protected]">[email protected]</a>.

PY - 2019/4/25

Y1 - 2019/4/25

N2 - The sluggish kinetics of Faradaic reactions in bulk electrodes is a significant obstacle to achieve high energy and power density in energy storage devices. Herein, a composite of LiFePO 4 particles trapped in fast bifunctional conductor rGO&C@Li 3 V 2 (PO 4 ) 3 nanosheets is prepared through an in situ competitive redox reaction. The composite exhibits extraordinary rate capability (71 mAh g −1 at 15 A g −1 ) and remarkable cycling stability (0.03% decay per cycle over 1000 cycles at 10 A g −1 ). Improved extrinsic pseudocapacitive contribution is the origin of fast kinetics, which endows this composite with high energy and power density, since the unique 2D nanosheets and embedded ultrafine LiFePO 4 nanoparticles can shorten the ion and electron diffusion length. Even applied to Li-ion hybrid capacitors, the obtained devices still achieve high power density of 3.36 kW kg −1 along with high energy density up to 77.8 Wh kg −1 . Density functional theory computations also validate that the remarkable rate performance is facilitated by the desirable ionic and electronic conductivity of the composite. © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

AB - The sluggish kinetics of Faradaic reactions in bulk electrodes is a significant obstacle to achieve high energy and power density in energy storage devices. Herein, a composite of LiFePO 4 particles trapped in fast bifunctional conductor rGO&C@Li 3 V 2 (PO 4 ) 3 nanosheets is prepared through an in situ competitive redox reaction. The composite exhibits extraordinary rate capability (71 mAh g −1 at 15 A g −1 ) and remarkable cycling stability (0.03% decay per cycle over 1000 cycles at 10 A g −1 ). Improved extrinsic pseudocapacitive contribution is the origin of fast kinetics, which endows this composite with high energy and power density, since the unique 2D nanosheets and embedded ultrafine LiFePO 4 nanoparticles can shorten the ion and electron diffusion length. Even applied to Li-ion hybrid capacitors, the obtained devices still achieve high power density of 3.36 kW kg −1 along with high energy density up to 77.8 Wh kg −1 . Density functional theory computations also validate that the remarkable rate performance is facilitated by the desirable ionic and electronic conductivity of the composite. © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

KW - bifunctional conductor

KW - cathode

KW - Li-ion hybrid capacitors

KW - Li 3 V 2 (PO 4 ) 3

KW - LiFePO 4

UR - http://www.scopus.com/inward/record.url?scp=85062330350&partnerID=8YFLogxK

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85062330350&origin=recordpage

U2 - 10.1002/adfm.201807895

DO - 10.1002/adfm.201807895

M3 - RGC 21 - Publication in refereed journal

SN - 1616-301X

VL - 29

JO - Advanced Functional Materials

JF - Advanced Functional Materials

IS - 17

M1 - 1807895

ER -

LiFePO <sub>4</sub> Particles Embedded in Fast Bifunctional Conductor rGO&C@Li <sub>3</sub> V <sub>2</sub> (PO <sub>4</sub> ) <sub>3</sub> Nanosheets as Cathodes for High-Performance Li-Ion Hybrid Capacitors