Organic molecules with redox-active motifs have attracted great attention as next-generation electrodes for sustainable energy storage. While there has been significant progress in designing redox-active molecules, the practical requirements of high electrochemical activity and stability, as well as rapid kinetics for fast charging, are motivating a search for methods to engineer three-dimensional (3D) structures of organic-based electrodes. Here, we demonstrate a lithographic fabrication strategy for realizing a 3D bicontinuous nano-network consisting of a periodically porous nickel-supported redox-active polyimide layer (pore radius <300 nm), which provides highly conductive pathways for electron and ion transport. Through super-lithiation of nearly all unsaturated CC bonds in this 3D-structured anode, a high reversible capacity of 1260 mA h g⁻¹ and 82.8% capacity retention over 250 cycles at a 10C rate are realized. Rates of up to 400C for lithium-ion storage of organic anodes have been achieved for the first time, opening up new engineering opportunities for high-performance organic batteries.

中文翻译：

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用于超高速率和可持续储能的 3D 周期性聚酰亚胺纳米网络

具有氧化还原活性基序的有机分子作为用于可持续储能的下一代电极引起了极大的关注。虽然在设计氧化还原活性分子方面取得了重大进展，但高电化学活性和稳定性的实际要求，以及快速充电的快速动力学，正在推动寻找方法来设计有机的三维 (3D) 结构。基于电极。在这里，我们展示了一种用于实现 3D 双连续纳米网络的光刻制造策略，该网络由周期性多孔镍支撑的氧化还原活性聚酰亚胺层（孔半径 <300 nm）组成，为电子和离子传输提供高导电通路。通过几乎所有不饱和碳的超锂化这种 3D 结构阳极中的 C 键实现了 1260 mA hg ^-1的高可逆容量和 10C 倍率下 250 次循环的 82.8% 容量保持率。首次实现了高达 400C 的有机负极锂离子存储速率，为高性能有机电池开辟了新的工程机会。