Layered P2 type transition metal oxides (TMOs) are considered as the promising cathode candidates for the sodium ion batteries (SIBs). However, the high operating voltage of the P2 cathodes always involves the irreversible phasic transition, which thus compromises the structural stability and practical applications. Through the sustainable recycling of biomass carbon as the sacrificial precursor framework, herein, a Na_0.92Li_0.40Ni_0.73Mn_0.24Co_0.12O₂ cathode with the coexisting P2/O3 phases is reported. By the aid of transmission-mode operando X-ray diffraction, the real-time phasic transition upon the solid-state reaction is precisely tracked. Furthermore, a full cell prototype by pairing the as-fabricated cathode with the anode that developed via a similar sacrificial templating strategy is established. The full cell model renders the simultaneous robust stability, the high energy density of ∼218.5 Wh kg^-1 at a power density of 83 W kg^-1 (0.5C). This biomass-templated strategy demonstrates a precise control over the structural and compositional features of electrodes for the SIBs.

层状P2型过渡金属氧化物（TMO）被认为是钠离子电池（SIB）的有希望的阴极候选材料。但是，P2阴极的高工作电压始终涉及不可逆的相变，因此损害了结构稳定性和实际应用。通过可持续地回收生物质碳作为牺牲性前驱体框架，在本文中，报道了具有共存的P2 / O3相的Na _0.92 Li _0.40 Ni _0.73 Mn _0.24 Co _0.12 O ₂阴极。借助传输模式操作通过X射线衍射，可以精确跟踪固态反应时的实时相变。此外，通过将制成的阴极与通过类似的牺牲模板策略开发的阳极配对，建立了全电池原型。全电池模型提供了同时的鲁棒稳定性，在83 W kg ^-1（0.5C）的功率密度下具有218.5 Wh kg ^-1的高能量密度。这种以生物质为模板的策略展示了对SIB电极结构和组成特征的精确控制。