Decoupled Electrochemical Hydrazine “Splitting” via a Rechargeable Zn–Hydrazine Battery

• DOI: 10.1002/adma.202207747
• Publication Date: 2022-10-03T10:33:32Z
• Authors: Yangyang Feng; Qingmei Shi; Jing Lin; Erchong Chai; Xiang Zhang; Zhenli Liu; Lei Jiao; Yaobing Wang
• Keywords: Hydrazine (antidepressant)

Abstract Hydrogen generation via electrochemical splitting plays an important role to achieve hydrogen economy. However, the large‐scale application is highly limited by high cost and low efficiency. Herein, a new type of rechargeable Zn–hydrazine (Zn–Hz) battery proposed realized bifunctional electrocatalyst based on two separate cathodic reactions evolution (discharge: 2H 2 O + e − → H 2OH ) hydrazine oxidation (charge: ). This Zn–Hz battery, driven temporally decoupled cathode during discharge charge processes, can generate separated without purification. When active 3D Mo C/Ni@C/CS paired with Zn foil, efficient energy input less than 0.4 V (77.2 kJ mol −1 efficiency 96%. Remarkably, this exhibits outstanding long‐term stability for 600 cycles (200 h), achieving continuous production demand, which presents great potential practical application.