Effect of Componential Proportion in Bimetallic Electrocatalysts on the Aprotic Lithium-Oxygen Battery Performance
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States); Imam Abdulrahman Bin Faisal Univ., Dammam (Saudi Arabia); Stanford Univ., Stanford, CA (United States)
Rechargeable lithium-oxygen (Li-O2) batteries are one of the most promising technologies for next-generation energy storage, which is also a critical part of the future renewable energy portfolio; however, its commercialization is still hindered by several challenges. The high charge overpotential, in particular, not only causes problems by increasing the possibility of electrolyte decomposition but also induces a low round-trip efficiency and coulombic efficiency. Here, by choosing the right component proportion in Pt-Cu bimetallic electrocatalysts that optimize electrocatalytic activity of electrochemical reactions, especially of oxygen evolution reactions, a superior electrochemical behavior is demonstrated, with a low charge overpotential of 0.2 V and cycleability of 50 discharge/charge cycles before capacity fading. In conclusion, the optimized Pt-Cu bimetallic electrocatalysts significantly reduce the charge overpotential and furthermore enhance the efficiency, stability, and cycleability of an aprotic Li-O2 battery.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
- Grant/Contract Number:
- AC02-06CH11357
- OSTI ID:
- 1466392
- Alternate ID(s):
- OSTI ID: 1433269
- Journal Information:
- Advanced Energy Materials, Vol. 8, Issue 20; ISSN 1614-6832
- Publisher:
- WileyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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