With the rapidly growing demand for low‐cost and safe energy storage, the advanced battery concepts have triggered strong interests beyond the state‐of‐the‐art Li‐ion batteries (LIBs). Herein, a novel hybrid Li/Na‐ion full battery (HLNIB) composed of the high‐energy and lithium‐free Na₃V₂(PO₄)₂O₂F (NVPOF) cathode and commercial graphite anode mesophase carbon micro beads is for the first time designed. The assembled HLNIBs exhibit two high working voltage at about 4.05 and 3.69 V with a specific capacity of 112.7 mA h g⁻¹. Its energy density can reach up to 328 W h kg⁻¹ calculated from the total mass of both cathode and anode materials. Moreover, the HLNIBs show outstanding high‐rate capability, long‐term cycle life, and excellent low‐temperature performance. In addition, the reaction kinetics and Li/Na‐insertion/extraction mechanism into/out NVPOF is preliminarily investigated by the galvanostatic intermittent titration technique and ex situ X‐ray diffraction. This work provides a new and profound direction to develop advanced hybrid batteries.

中文翻译：

---

由高压阴极和商用石墨阳极组装而成的实用锂/钠混合全电池：出色的储能性能和工作机理

随着对低成本和安全储能的需求迅速增长，先进的电池概念已经引起了人们对除最新锂离子电池（LIB）之外的浓厚兴趣。本文中，由高能量和无锂的Na ₃ V ₂（PO ₄）₂ O ₂ F（NVPOF）阴极和商用石墨阳极中间相碳微珠组成的新型混合锂/锂离子全电池（HLNIB）是首次设计。组装后的HLNIB在约4.05和3.69 V处表现出两个高工作电压，比容量为112.7 mA hg ^-1。它的能量密度可以达到328 W h kg ^-1由正极和负极材料的总质量计算得出。此外，HLNIB具有出色的高倍率性能，长期循环寿命和出色的低温性能。此外，通过恒电流间歇滴定技术和非原位X射线衍射初步研究了NVPOF进出锂离子的反应动力学和Li / Na插入/萃取机理。这项工作为开发先进的混合动力电池提供了新的深刻方向。