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A Li-contained air-stable cathode for high-performance all-organic lithium-ion batteries by Deng, Wenwen (author);Shi, Weibo (author);Li, Peiyuan (author);Hu, Naiqi (author);Wang, Shuchan (author);Wang, Jiayao (author);Liu, Liang (author);Shi, Zhuanzhuan (author);Lin, Jian (author);Guo, Chunxian (author) is a Engineering article available to read on EtoBox.

What is A Li-contained air-stable cathode for high-performance all-organic lithium-ion batteries about?

All-organic lithium-ion battery Li-contained cathode air-stable organic cathode LiTCNQ a b s t r a c t All-organic lithium-ion battery (AOLB) is a new type of energy storage device that is sustainable, versatile and potentially low-cost. Current development of AOLBs is still largely restrained by the Li-contained organic cathodes, which should be air stable and high performance. In this work, lithium tetracyanoquinodimethan (LiTCNQ) is presented as a new Li-contained organic cathode for AOLBs. Theoretical calculation proves the air-stable nature of LiTCNQ, of which the frontline molecular orbital mismatches with O 2 molecules with an energy difference more than 6 eV. The LiTCNQ-based half-cells deliver an outstanding performance with an average redox potential of 3.2 V, a capacity of 127 mAh g -1 at a current density of 20 mA g -1 , and a capacity retention of 85% after 100 cycles. Advanced characterizations prove the high reversibility of transformation between C ≡N groups of TCNQ and -C = N groups of LiTCNQ. The LiTCNQ-based AOLBs with Li2TPh anode exhibit a high capacity of 150 mAh g -1 at a current density of 20 mA g -1 , an energy density up to 270 wh kg -1 , and a capacity re

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Author
Deng, Wenwen (author);Shi, Weibo (author);Li, Peiyuan (author);Hu, Naiqi (author);Wang, Shuchan (author);Wang, Jiayao (author);Liu, Liang (author);Shi, Zhuanzhuan (author);Lin, Jian (author);Guo, Chunxian (author)
Publisher
Elsevier BV
Published
2022
Language
EN
Field
Engineering (Physical Sciences)

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