2022•Advanced Energy MaterialsRequires access

Enabling Stable and Nonhysteretic Oxygen Redox Capacity in Li‐Excess Na Layered Oxides (Adv. Energy Mater. 11/2022)

Geon‐Hee Yoon, Sojung Koo, Sung‐Joon Park, Jaewoon Lee, Chanwoo Koo, Seok Hyun Song, Tae‐Yeol Jeon, Hyungsub Kim, Jong‐Seong Bae, Won‐Jin Moon, Sung‐Pyo Cho, Duho Kim, Seung‐Ho Yu

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Abstract

Oxygen Redox In article number 2103384 Duho Kim, Seung-Ho Yu and co-workers improve the reversibility of oxygen redox in Li-excess Na layered oxides by Al3+ doping. The presence of an additional stable phase during the oxygen redox is a critical factor in extending and stabilizing the discharge capacity. In addition, redox-inactive Al3+ causes heterogeneous oxygen redox, which stabilizes the oxide framework under sensitively controlled oxygen participation upon cycling.

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Key concepts: Redox, Oxygen, Materials science, Oxide, Inorganic chemistry, Chemical engineering, Chemistry, Organic chemistry