Cost-Effective Electrode Fabrication Method Using Hydroxypropyl Methylcellulose Binder for Proton Exchange Membrane Water Electrolysis

. However, despite this improved initial performance, the higher voltage decay rate of the HPMC binder (0.305 mV/h vs 0.250 mV/h) over 200 h indicates the need for further elaboration on its long-term durability. These findings suggest that the cross-linked HPMC holds promise as a cost-effective and efficient binder for PEMWE anodes, with the potential for further optimization for durability.