The high overpotential of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) leading to slow air cathode kinetics is still a major challenge for zinc-air batteries (ZABs), hindering...
Developing an efficient and robust electrocatalyst for the sluggish oxygen reduction reaction (ORR) in PEMFC is imperatively desirable and challenging. This study presents a feasible route of co-carbonization of Fe-loaded...
Nowadays,
lithium (Li) metal is regarded as the most prospective
electrode for the next generation of rechargeable batteries. Regrettably,
poor coulombic efficiency (CE) and dendritic lithium development after
repeated lithium electroplating/exfoliation treatments significantly
restrict Li metal battery applications. To prevent dendrite growth
of the Li metal during the reaction, an adequate amount of lithium
perchlorate (LiClO4) is added to the ether-based electrolyte
as an additive. When this additive is combined with lithium metal,
a homogeneous and dense solid electrolyte interphase (SEI) layer rich
in lithium chloride and lithium oxide can be created in situ. As a result of the general synergistic protection of LiCl and Li2O, the produced SEI has high ionic conductivity, allowing
Li+ mobility, resulting in a more homogeneous distribution
of electric field strength, helping to uniform Li deposition, and
preventing the development of Li dendrites. As a result, the superior
electrochemical performances are demonstrated by an ultralong cycling
lifetime (>1500 h) in Li||Li symmetrical cells, coupled with a
relatively
low hysteresis voltage of 60 mV at 1 mA cm–2, a
sufficiently high-quality CE (approximately 96% for 200 cycles at
the current density of 0.5 mA cm–2 in Li||Cu cells),
and an improved cycling stability in the Li||LiFePO4 complete
cell.
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