Planar micro-supercapacitors (MSCs) with high energy/power densities and long cycle life are expected to expedite the development of the future wearable miniaturized electronics. However, its low energy density issue always falls short in ever-increasing demands of specific energy consumption. Herein, a dual active and kinetically inter-promoting Li₃VO₄ (LVO)/graphene composite is designed as the anode for high energy density lithium ion micro capacitors (LIMCs). The LVO nanoparticles are evenly confined on graphene nanosheets through an atomic layer pre-deposition (ALD) technique, which substantially disperses the nucleation site and impedes the coarse grain growth in the successive solid-state formation of LVO. The much-promoted reaction kinetics of LVO and graphene substrate with sufficient diffusion space in the interdigital electrodes of LIMCs synergistically boost the three-dimensional and efficiently lithium ion storage behavior. The LVO/graphene exhibits extraordinary rate capability (98.5 mAh g⁻¹ at 40 A g⁻¹ (100 C)) and long-term stability. All the current collectors and asymmetric interdigital electrodes are spray printed, opening a facile and delicate technique for a large-scale production of LIMCs. The LIMCs deliver a superior volumetric energy density of 51.4 mWh cm⁻³, excellent flexible and cyclic stability, demonstrating a great potential for the future miniaturized, flexible, and high-performance energy storage devices.

具有高能量/功率密度和长循环寿命的平面微型超级电容器（MSC）有望加速未来可穿戴微型电子产品的发展。然而，它的低能量密度问题总是无法满足不断增长的特定能耗需求。在此，双活性和动力学互促进的 Li ₃ VO ₄(LVO)/石墨烯复合材料被设计为高能量密度锂离子微型电容器 (LIMC) 的阳极。LVO 纳米粒子通过原子层预沉积 (ALD) 技术均匀地限制在石墨烯纳米片上，该技术显着分散了成核位点并阻止了 LVO 连续固态形成中的粗晶粒生长。LVO 和石墨烯基底在 LIMC 的叉指电极中具有足够扩散空间的极大促进的反应动力学协同促进了三维和高效的锂离子存储行为。LVO/石墨烯表现出非凡的倍率能力（98.5 mAh g ^-1 at 40 A g ^-1(100 C)) 和长期稳定性。所有集电器和非对称叉指电极都是喷涂印刷的，为大规模生产 LIMC 开辟了一种简便而精细的技术。LIMCs 具有 51.4 mWh cm ^-3的优异体积能量密度、优异的柔性和循环稳定性，展示了未来小型化、柔性和高性能储能设备的巨大潜力。