Lithium ion capacitors (LICs) are deemed to be an ideal complement between lithium-ion batteries and supercapacitors. However, the sluggish kinetics that leads to a poor rate capability of Faradaic insertion anodes remains a handicap. Herein, a self-supported architecture is designed by combining an interconnected graphene scroll (GS) framework with in situ formed well-distributed MnO nanoparticles (NPs) for an advanced LIC anode. In this architecture, the inner-connected tubular GS framework plays a multifunctional role: serving as an electron transport bridge like “highways”, providing a favorable ion transport pathway as well as accommodating the volume expansion and maintaining the structural stability of MnO. Benefiting from the stable structure, highly localized charge-transfer and low energy diffusion barrier, the as-built anode exhibits an ultrahigh-rate behavior (203 mAh g⁻¹ at 20 A g⁻¹) and robust cycling stability (759 mAh g⁻¹ after 1000 cycles at 2 A g⁻¹). When evaluated as a self-supported anode for LIC, the LIC delivers a high energy density of 179.3 Wh kg⁻¹, a high power density of 11.7 kW kg⁻¹, and a capacity retention of 80.8% after 5000 cycles. Moreover, the corresponding soft-packaged LIC keeps stable electrochemical performances at various bending states. All these features manifest the potential of the architecture for application in advanced energy storage devices.

锂离子电容器（LIC）被认为是锂离子电池和超级电容器之间的理想补充。然而，导致法拉第插入阳极的差速能力差的动力学缓慢仍然是一个障碍。在本文中，通过将互连的石墨烯涡旋（GS）框架与原位形成的分布均匀的MnO纳米颗粒（NPs）用于高级LIC阳极相结合，来设计自支撑体系结构。在此体系结构中，内部连接的管状GS框架起着多功能的作用：充当“高速公路”之类的电子传输桥，提供了有利的离子传输路径，并适应了MnO的体积膨胀并保持其结构稳定性。得益于稳定的结构，高度局部化的电荷转移和低能量扩散势垒，^-1在20 A G ^-1）和鲁棒的循环稳定性（759毫安克^-1后2 A G 1000次循环^-1）。当评估为LIC的自支撑阳极时，LIC在5000次循环后可提供179.3 Wh kg ^-1的高能量密度，11.7 kW kg ^-1的高功率密度和80.8％的容量保持率。而且，相应的软包装LIC在各种弯曲状态下保持稳定的电化学性能。所有这些功能都表明了该架构在高级能量存储设备中的应用潜力。