Ammonia-induced construction of three-dimensional sea urchin-like Co(OH)2 @CuO structure for oxygen evolution reaction and supercapacitor
Source abstract
Abstract
The development of low-cost and earth-abundant electrocatalysts with efficient energy conversion and excellent super-capacitive storage is highly desirable for practical applications. Herein, three-dimensional sea urchin-like Co(OH) 2 @CuO structure nanocomposites were successfully synthesized by an ammonia coordination strategy. Compared with Co(OH) 2 and CuO electrocatalysts, the optimized Co(OH) 2 @CuO composite exhibits excellent oxygen evolution reaction activity and supercapacitor performance due to the synergistic effect between them. The as-prepared Co(OH) 2 @CuO-2 electrocatalyst displays a low overpotential of 361 mV to drive 10 mA cm –2 and a long-term durability during at least 30 h of OER testing. In addition, Co(OH) 2 @CuO-2 also exhibits a high capacitance of 270.8 F g −1 at 0.5 A g −1 when used as a supercapacitor electrode. This work provides a new idea for developing highly active, low-cost bifunctional electrocatalysts for electrochemical conversion and energy storage.
Source: expertdata · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Supercapacitor Materials and Fabrication · Advanced battery technologies research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (67)
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