| 초록 |
Zinc dendrite growth negatively affects zinc–bromine flow battery (ZBB) performance because it causes membrane damage, which induces self-discharge in the battery. To prevent short-circuiting, an added electrode refreshing process is necessary during cycling. In this work, a three-dimensional (3D) structured anode for zinc-bromine flow battery is prepared by simple titanium mesh, which increases active sites of Zn/Zn2+ redox reaction as well as provides well-developed electrolyte flow channels. The flow cell containing the 3D titanium mesh anode shows a 50% decrease in overall stripping capacity and a 37.2% increase in the average energy efficiency compared to the control battery at current density of 40 mA cm-2. In addition, an average energy efficiency increase of 10.8% is achieved even at current density of 80 mA cm−2. The results indicate that this modification of electrode structure is promising for suppressing dendrite growth and obtaining high-performance ZBBs. |
