Self-reconstructed interlayer derived by in-situ Mn diffusion from La0.5Sr0.5MnO3 via atomic layer deposition for an efficient bi-functional electrocatalyst
Cited 0 times inCited 0 times in
- Self-reconstructed interlayer derived by in-situ Mn diffusion from La0.5Sr0.5MnO3 via atomic layer deposition for an efficient bi-functional electrocatalyst
- Seong, Arim; Kim, Jeongwon; Kwon, Ohhun; Jeong, Hu Young; Gorte, Raymond J.; Vohs, John M.; Kim, Guntae
- Issue Date
- NANO ENERGY, v.71, pp.104564
- The development of efficient electrocatalyst is crucial to realize a sustainable energy conversion and storage system. Herein, we have applied atomic layer deposition (ALD) to depositing nano-sized Co3O4 onto La0.5Sr0.5MnO3 (LSM). Interestingly, an in-situ Mn diffusion from LSM during ALD process gives a self-reconstructed MnCo2O4 spinel interlayer between LSM and Co3O4. The X-ray absorption fine structure (XAFS) of LSM with 20 ALD cycles of Co3O4 (LSM-20-Co) showed a partially left-shifted white line of Co K-edge compared to the that of Co3O4, confirming the existence of the MnCo2O4 interlayer. Notably, the LSM-20-Co catalyst showed comparable Tafel slope for both the ORR (65 mV dec(-1)) and the OER (82 mV dec(-1)) comparing with the Pt/C (58 mV dec(-1)) and IrO2 (114 mV dec(-1)), along with stable cycling performance over 450 min for alkaline Zinc-air battery. This work provides the rational design strategy of self-constructed interlayer via ALD process for efficient bi-functional electrocatalyst.
- Appears in Collections:
- UCRF_Journal Papers
- Files in This Item:
- There are no files associated with this item.
can give you direct access to the published full text of this article. (UNISTARs only)
Show full item record
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.