π-π Stacked Nigrosine@Carbon Nanotube Nanocomposite as an All-in-One Additive for High Energy Flexible Batteries.

Xing, Zhihao; Zou, Shihui; Ma, Cong; Qiao, Qiangqiang; Cai, Xiaohan; Yue, Ke; Yue, Juxin; Zhou, Chunyi et al. · ACS Nano · 2024

basic_science · Level V

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Abstract

The pursuit of high energy density in lithium batteries has driven the development of efficient electrodes with low levels of inactive components. Herein, a facile approach involving the use of π-π stacked nigrosine@carbon nanotube nanocomposites as an all-in-one additive for a LiFePO<sub>4</sub> cathode has been developed. This design significantly reduces the proportion of inactive substances within the cathode, resulting in a battery that exhibits a high specific capacity of 143 mAh g<sup>-1</sup> at a 1 C rate and shows commendable cyclic performance. Furthermore, the elimination of rigid current collectors endows the electrode with flexibility, offering avenues for future wearable energy storage devices.