Hf Doping Boosts the Excellent Activity and Durability of Fe-N-C Catalysts for Oxygen Reduction Reaction and Li-O2 Batteries
Mingrui Liu, Shaoqiu Ke, Chuangqing Sun, Chenzhuo Zhang, Shijun Liao · 2024
Read Hf Doping Boosts the Excellent Activity and Durability of Fe-N-C Catalysts for Oxygen Reduction Reaction and Li-O2 Batteries by Mingrui Liu, Shaoqiu Ke, Chuangqing Sun, Chenzhuo Zhang, Shijun Liao (2024) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-11728555.txt.
Description
Mingrui Liu and four co-authors spike an iron catalyst with hafnium and watch it outlast its rivals in two energy devices. Iron-nitrogen-carbon catalysts are the leading cheap stand-ins for platinum in fuel cells and lithium-oxygen batteries, but they fade. The new material grows from a hafnium-bearing framework, co-doped with iron and nitrogen in a porous carbon. Hafnium reshapes the iron sites' electronics and pins them in place.
In a fuel cell cathode the catalyst hit a peak power density of 1.15 watts per square centimeter. Lithium-oxygen cells reached huge discharge capacity with 200 millivolts less charging penalty than the undoped version. Endurance improved in both devices.
Catalog record
| CREATOR | Mingrui Liu, Shaoqiu Ke, Chuangqing Sun, Chenzhuo Zhang, Shijun Liao |
|---|---|
| YEAR | 2024 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 22 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |