Integrating Multiredox Centers into One Framework for High-Performance Organic Li-Ion Battery Cathodes

Chunyu Cui; Xiao Ji; Peng Fei Wang; Gui Liang Xu; Long Chen; Ji Chen; Hacksung Kim; Yang Ren; Fu Chen; Chongyin Yang; Xiulin Fan; Chao Luo; Khalil Amine; Chunsheng Wang

doi:10.1021/acsenergylett.9b02466

Integrating Multiredox Centers into One Framework for High-Performance Organic Li-Ion Battery Cathodes

Chunyu Cui, Xiao Ji, Peng Fei Wang, Gui Liang Xu, Long Chen, Ji Chen, Hacksung Kim, Yang Ren, Fu Chen, Chongyin Yang, Xiulin Fan, Chao Luo^*, Khalil Amine, Chunsheng Wang

^*Corresponding author for this work

CCSS - Center for Catalysis and Surface Science

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

60 Scopus citations

Abstract

Organic cathode materials are promising for developing high-energy and high-power Li-ion batteries (LIBs). However, the energy storage of most organic cathodes relies on the electron transfer of a single type of functional group, leading to either a low redox potential or a low capacity. Here we propose a new strategy for the structure design and performance optimization of organic materials. A new organic cathode, dithianon (DTN), containing three functional groups (-S-, C-O, CN) in one framework, is reported. The -S- group increases the redox potential to 3.0 V, while C-O and CN groups enable a three Li-ions-involved redox reaction. As a cathode, DTN delivers 270.2 mAh g^-1 at 0.5C for 300 cycles. Even at 5C, it still retains 161.5 mAh g^-1 after 1000 cycles. The high-capacity, high-power, and stable DTN cathode offers great promise for high-performance and sustainable LIBs.

Original language	English (US)
Pages (from-to)	224-231
Number of pages	8
Journal	ACS Energy Letters
Volume	5
Issue number	1
DOIs	https://doi.org/10.1021/acsenergylett.9b02466
State	Published - Jan 10 2020

ASJC Scopus subject areas

Chemistry (miscellaneous)
Renewable Energy, Sustainability and the Environment
Fuel Technology
Energy Engineering and Power Technology
Materials Chemistry

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10.1021/acsenergylett.9b02466

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title = "Integrating Multiredox Centers into One Framework for High-Performance Organic Li-Ion Battery Cathodes",

abstract = "Organic cathode materials are promising for developing high-energy and high-power Li-ion batteries (LIBs). However, the energy storage of most organic cathodes relies on the electron transfer of a single type of functional group, leading to either a low redox potential or a low capacity. Here we propose a new strategy for the structure design and performance optimization of organic materials. A new organic cathode, dithianon (DTN), containing three functional groups (-S-, C-O, CN) in one framework, is reported. The -S- group increases the redox potential to 3.0 V, while C-O and CN groups enable a three Li-ions-involved redox reaction. As a cathode, DTN delivers 270.2 mAh g-1 at 0.5C for 300 cycles. Even at 5C, it still retains 161.5 mAh g-1 after 1000 cycles. The high-capacity, high-power, and stable DTN cathode offers great promise for high-performance and sustainable LIBs.",

author = "Chunyu Cui and Xiao Ji and Wang, {Peng Fei} and Xu, {Gui Liang} and Long Chen and Ji Chen and Hacksung Kim and Yang Ren and Fu Chen and Chongyin Yang and Xiulin Fan and Chao Luo and Khalil Amine and Chunsheng Wang",

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doi = "10.1021/acsenergylett.9b02466",

language = "English (US)",

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T1 - Integrating Multiredox Centers into One Framework for High-Performance Organic Li-Ion Battery Cathodes

AU - Cui, Chunyu

AU - Ji, Xiao

AU - Wang, Peng Fei

AU - Xu, Gui Liang

AU - Chen, Long

AU - Chen, Ji

AU - Kim, Hacksung

AU - Ren, Yang

AU - Chen, Fu

AU - Yang, Chongyin

AU - Fan, Xiulin

AU - Luo, Chao

AU - Amine, Khalil

AU - Wang, Chunsheng

PY - 2020/1/10

Y1 - 2020/1/10

N2 - Organic cathode materials are promising for developing high-energy and high-power Li-ion batteries (LIBs). However, the energy storage of most organic cathodes relies on the electron transfer of a single type of functional group, leading to either a low redox potential or a low capacity. Here we propose a new strategy for the structure design and performance optimization of organic materials. A new organic cathode, dithianon (DTN), containing three functional groups (-S-, C-O, CN) in one framework, is reported. The -S- group increases the redox potential to 3.0 V, while C-O and CN groups enable a three Li-ions-involved redox reaction. As a cathode, DTN delivers 270.2 mAh g-1 at 0.5C for 300 cycles. Even at 5C, it still retains 161.5 mAh g-1 after 1000 cycles. The high-capacity, high-power, and stable DTN cathode offers great promise for high-performance and sustainable LIBs.

AB - Organic cathode materials are promising for developing high-energy and high-power Li-ion batteries (LIBs). However, the energy storage of most organic cathodes relies on the electron transfer of a single type of functional group, leading to either a low redox potential or a low capacity. Here we propose a new strategy for the structure design and performance optimization of organic materials. A new organic cathode, dithianon (DTN), containing three functional groups (-S-, C-O, CN) in one framework, is reported. The -S- group increases the redox potential to 3.0 V, while C-O and CN groups enable a three Li-ions-involved redox reaction. As a cathode, DTN delivers 270.2 mAh g-1 at 0.5C for 300 cycles. Even at 5C, it still retains 161.5 mAh g-1 after 1000 cycles. The high-capacity, high-power, and stable DTN cathode offers great promise for high-performance and sustainable LIBs.

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Integrating Multiredox Centers into One Framework for High-Performance Organic Li-Ion Battery Cathodes

Abstract

ASJC Scopus subject areas

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