The safe and affordable aqueous zinc-ion batteries (ZIBs) are highly desirable for complementing lithium-ion batteries. Nevertheless, Zn anode encounters severe dendrite growth in aqueous media, impeding the practical implementation of ZIBs. Herein, we prepared the metal-free aqueous ZIBs, where the MoTe_1.7 with tellurium vacancies from the laser reduction serves as the negative electrode. The metal-free tactics bypass the hazards of Zn metal, and laser-radiated Te vacancies boost capacity, stability, conductivity, and diffusion kinetics of the electrode. The laser-reduced MoTe_1.7 electrode shows a high reversible capacity (338 mAh g^–1 at 0.2 A g^–1) and outstanding cycling stability (96% retention for 10,000 cycles at 1 A g^–1). The conversion chemistry is confirmed as the charge-storage mechanism of the MoTe_1.7 electrode in aqueous ZIBs. As expected, the as-fabricated MoTe_1.7//Zn_xMnO₂ pouch-type full cell delivers a superb energy density (electrode level) of 137 Wh kg^–1, higher than those of the state-of-the-art metal-free ZIBs. The high capacity retention of 95% is achieved over 1000 cycles in pouch cells, verifying the enormous application prospect of the laser-reduced MoTe_1.7 anode. This finding may accelerate the development process of rechargeable aqueous ZIBs.

安全且价格合理的水系锌离子电池 (ZIB) 非常适合作为锂离子电池的补充。然而，锌负极在水介质中会遇到严重的枝晶生长，阻碍了 ZIBs 的实际应用。在此，我们制备了无金属水系 ZIB，其中具有来自激光还原的碲空位的 MoTe _1.7作为负极。无金属策略绕过了 Zn 金属的危害，激光辐射的 Te 空位提高了电极的容量、稳定性、导电性和扩散动力学。激光还原的 MoTe _1.7电极显示出高可逆容量（在 0.2 A g ^{–1 下为 338 mAh g –1 ）}和出色的循环稳定性（在 1 A g –1 下 10,000 次循环保持 96%^–1 )。转换化学被证实为 MoTe _1.7电极在水性 ZIB 中的电荷存储机制。正如预期的那样，所制造的 MoTe _1.7 //Zn _x MnO ₂袋型全电池提供了 137 Wh kg ^–1的卓越能量密度（电极水平） ，高于最先进的金属-免费的 ZIB。在软包电池中循环超过 1000 次后，容量保持率高达 95%，验证了激光还原 MoTe _1.7阳极的巨大应用前景。这一发现可能会加速可充电水性 ZIB 的开发过程。