TY - JOUR
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
N1 - Funding Information:
We acknowledge the support of the Maryland NanoCenter and its NispLab. The NispLab is supported in part by the NSF as a MRSEC Shared Experimental Facility. We also acknowledge the support from the Nanostructures for Electrical Energy Storage (NEES), an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, under Award Number DESC0001160. G.-L.X. and K.A. gratefully acknowledge support from the U.S. Department of Energy (DOE), Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Office. This research used resources of the Advanced Photon Source, an Office of Science User Facility operated for the U.S. Department of Energy (DOE) Office of Science by Argonne National Laboratory and was supported by the U.S. DOE under Contract No. DE-AC0-06CH11357. H.K (Raman work) was supported by the U.S. Department of Energy, Office of Basic Energy Sciences, through Grant DE-FG02-03ER15457 to the Institute for Catalysis for Energy Processes (ICEP) at Northwestern University. C.L. acknowledges the support from George Mason University, Award No. 183904.
Publisher Copyright:
© 2019 American Chemical Society.
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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U2 - 10.1021/acsenergylett.9b02466
DO - 10.1021/acsenergylett.9b02466
M3 - Article
AN - SCOPUS:85077111307
SN - 2380-8195
VL - 5
SP - 224
EP - 231
JO - ACS Energy Letters
JF - ACS Energy Letters
IS - 1
ER -
