Feixiang Ding

Aug 25, 2024 | nature.com | Feixiang Ding |Yaoshen Niu |Xiaohui Rong |Yaxiang Lu |Huican Mao |Dong Su

AbstractHigh-entropy oxides have expanded the potential for high-performance Na-ion battery cathodes due to their vast compositional space and entropy-driven stabilization. However, a rational design approach for optimizing their composition is still lacking. Here, we develop an O3-type oxide cathode composed of all-3d transition metals, NaNi0.3Cu0.1Fe0.2Mn0.3Ti0.1O2 (NCFMT), which exhibits improved reversible specific capacity and exceptional cycling stability.

Jun 14, 2023 | dx.doi.org | Feixiang Ding |Haibo Wang |Qinghua Zhang |Lirong Zheng

Charge compensation from cationic and anionic redox couples accompanying Na+ (de)intercalation in layered oxide cathodes contributes to high specific capacity. However, the engagement level of different redox couples remains unclear and their relationship with Na+ content is less studied.