One big challenge for long-lived inverted perovskite solar cells (PSCs) is that commonly used metal electrodes react with perovskite layer, inducing electrode corrosion and device degradation. Motivated by the idea of metal anticorrosion, here, we propose a chemical anticorrosion strategy to fabricate stable inverted PSCs through introducing a typical organic corrosion inhibitor of benzotriazole (BTA) before Cu electrode deposition. BTA molecules chemically coordinate to the Cu electrode and form an insoluble and polymeric film of [BTA-Cu], suppressing the electrochemical corrosion and reaction between perovskite and the Cu electrode. PSCs with BTA/Cu show excellent air stability, retaining 92.8 ± 1.9% of initial efficiency after aging for 2500 hours. In addition, >90% of initial efficiency is retained after 85°C aging for over 1000 hours. PSCs with BTA/Cu also exhibit good operational stability, and 88.6 ± 2.6% of initial efficiency is retained after continuous maximum power point tracking for 1000 hours.
Surfactants attract attentions in aluminum-air batteries (AABs) due to its profound effects for anti-corrosion. This research proposes a patching reinforcement strategy using surfactants of dodecyl-β-D-maltoside (βD) and dodecyldimethyl benzyl ammonium bromide (DDBAB) to enhance the action of 8-hydroxyquinoline (8-HQ) as electrolyte additive . Hybrid surfactants consolidate the complexation of 8-HQ with aluminum , forming a dense protective film on the electrode surface . The results show that the assembled AABs has the highest capacity density of 2517 mAh·g −1 under optimizing condition, and the anode utilization rate reaches 84.5%. The corrosion protection efficiency can reach 87.2% on Al-5052 electrode in 4 M NaOH solution. This strategy provides a new method for using hybrid additives for AABs and aims to promote their commercial application.
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