As the treasure on the earth, forest resources should be utilized in a high value-added and efficient way. Herein, a wood-based quasi-solid-state aqueous zinc ion battery (AZIB) is developed to address the issues of AZIBs, i.e., low Zn stripping/plating reversibility and poor tolerance to low-temperature environments. Particularly, the anode is fabricated by ultraviolet light irradiation-assisted delignification of wood veneer and subsequent decoration of metallic Ni and Zn. This wood-based electrode exhibits large electrical conductivity, good affinity to aqueous electrolyte, high tensile strength, and can combine the advantages of unique structure and cellulose framework from wood. It is found that this electrode can considerably restrict two-dimensional diffusion of Zn²⁺ ions, facilitate desolvation process, improve Zn deposition kinetics, and inhibit Zn metal corrosion, thereby significantly stabilizing Zn deposition behavior. Thanks to that, the Zn//Zn cell with wood-based electrodes can deliver a long lifespan of 900 h at 2 mA cm⁻² and 2 mAh cm⁻². Besides, wood-derived current collector and nanocellulose are used to construct cathode and hydrogel electrolyte, respectively. The assembled wood-based AZIB delivers superior performances even at −20 °C and under bending. The strategy in this work could be extended in other flexible energy storage systems.

森林资源作为地球上的宝藏，应该以高附加值、高效率的方式加以利用。在此，开发了一种木质准固态水系锌离子电池（AZIB）以解决AZIBs的问题，即锌剥离/电镀可逆性低和对低温环境的耐受性差。特别地，阳极是通过紫外光照射辅助木皮脱木质素和随后的金属镍和锌装饰来制造的。这种木质电极具有较大的导电性、对水性电解质的亲和性好、抗拉强度高，可以结合木材独特的结构和纤维素骨架的优点。^{发现该电极可以显着限制Zn 2+}的二维扩散。离子，促进去溶剂化过程，改善锌沉积动力学，抑制锌金属腐蚀，从而显着稳定锌沉积行为。得益于此，带有木质电极的 Zn//Zn 电池在 2 mA cm ^-2和 2 mAh cm ^-2下可提供 900 小时的长寿命。此外，木材衍生的集电器和纳米纤维素分别用于构建阴极和水凝胶电解质。即使在 -20 °C 和弯曲条件下，组装的木质 AZIB 也能提供卓越的性能。这项工作中的策略可以扩展到其他灵活的储能系统。