CeO2 Supported on Reduced Graphene Oxide as Li-O2 Battery Cathode

Fu, Zerui; Wang, Zonghua; Yu, Hao; Nie, M.; Feng, Xun; Zuo, Xintao; Fu, Liangjie; Liu, Dapeng; Zhang, Yu

doi:10.1007/s40242-023-3107-0

“…Fluorite-structured ZrO 2 , CeO 2 , and Pr 6 O 11 exhibit good catalytic performance in Li–O 2 batteries, especially when riched in oxygen defects. 9–28 The large center space of the fluorite crystal cell benefits the adsorption and transport of oxygen. Because Hf and Zr are IVB group elements with similar atomic radii, fluorite or fluorite-like structured HfO 2 , existing in the crystal forms of tetragonal, cubic, and monoclinic, 29,30 might have comparable or better catalytic performance.…”

Section: Introductionmentioning

confidence: 99%

Oxygen defect regulation, catalytic mechanism, and modification of HfO₂ as a novel catalyst for lithium–oxygen batteries

Su,

Zhang,

Zhan

et al. 2024

J. Mater. Chem. A

2

0

View full text Add to dashboard Cite

show abstract

Dual‐Anionic Coordination Manipulation Induces Phosphorus and Boron‐Rich Gradient Interphase Towards Stable and Safe Sodium Metal Batteries

Feng,

Liu,

Qi

et al. 2024

Angewandte Chemie

0

View full text Add to dashboard Cite

High‐voltage sodium metal batteries (SMBs) present a viable pathway towards high‐energy‐density sodium‐based batteries due to the competitive cost advantage and abundant supply of sodium resources. However, they still suffer from severe capacity decay induced by the notorious decomposition of the electrolyte under high voltage and unstable cathode/electrolyte interphase (CEI). In addition, the high reactivity of Na metal and flammable electrolytes push SMBs to their safety limits. Herein, a special dual‐anion aggregated Na+ solvation structure is designed in a nonflammable trimethyl phosphate‐based localized high‐concentration electrolyte, and a gradient CEI enriched with phosphorus and boron compounds is formed on the cathode. This thin and stable interphase effectively suppresses the parasitic reaction, improves the interfacial stability of the cathode, and facilitates Na+ transport through the interface by the synergistic effect of multi‐components, thus optimizing the cycling stability and safety of SMBs. The Na0.95Ni0.4Fe0.15Mn0.3Ti0.15O2//Na batteries employing such electrolyte provide a discharge capacity of 167.5 mA h g−1 and high retention in the capacity of 85.2% after 800 cycles at 1 C. This approach offers a general strategy for the design of flame‐retardant high‐voltage electrolytes and the practical application of SMBs.

show abstract

Dual‐Anionic Coordination Manipulation Induces Phosphorus and Boron‐Rich Gradient Interphase Towards Stable and Safe Sodium Metal Batteries

Feng,

Liu,

Qi

et al. 2024

Angew Chem Int Ed

0

View full text Add to dashboard Cite

High‐voltage sodium metal batteries (SMBs) present a viable pathway towards high‐energy‐density sodium‐based batteries due to the competitive cost advantage and abundant supply of sodium resources. However, they still suffer from severe capacity decay induced by the notorious decomposition of the electrolyte under high voltage and unstable cathode/electrolyte interphase (CEI). In addition, the high reactivity of Na metal and flammable electrolytes push SMBs to their safety limits. Herein, a special dual‐anion aggregated Na+ solvation structure is designed in a nonflammable trimethyl phosphate‐based localized high‐concentration electrolyte, and a gradient CEI enriched with phosphorus and boron compounds is formed on the cathode. This thin and stable interphase effectively suppresses the parasitic reaction, improves the interfacial stability of the cathode, and facilitates Na+ transport through the interface by the synergistic effect of multi‐components, thus optimizing the cycling stability and safety of SMBs. The Na0.95Ni0.4Fe0.15Mn0.3Ti0.15O2//Na batteries employing such electrolyte provide a discharge capacity of 167.5 mA h g−1 and high retention in the capacity of 85.2% after 800 cycles at 1 C. This approach offers a general strategy for the design of flame‐retardant high‐voltage electrolytes and the practical application of SMBs.

show abstract

CeO2 Supported on Reduced Graphene Oxide as Li-O2 Battery Cathode

Cited by 5 publications

References 38 publications

Oxygen defect regulation, catalytic mechanism, and modification of HfO₂ as a novel catalyst for lithium–oxygen batteries

Oxygen defect regulation, catalytic mechanism, and modification of HfO₂ as a novel catalyst for lithium–oxygen batteries

Dual‐Anionic Coordination Manipulation Induces Phosphorus and Boron‐Rich Gradient Interphase Towards Stable and Safe Sodium Metal Batteries

Dual‐Anionic Coordination Manipulation Induces Phosphorus and Boron‐Rich Gradient Interphase Towards Stable and Safe Sodium Metal Batteries

Contact Info

Product

Resources

About

CeO2 Supported on Reduced Graphene Oxide as Li-O2 Battery Cathode

Cited by 5 publications

References 38 publications

Oxygen defect regulation, catalytic mechanism, and modification of HfO2 as a novel catalyst for lithium–oxygen batteries

Oxygen defect regulation, catalytic mechanism, and modification of HfO2 as a novel catalyst for lithium–oxygen batteries

Dual‐Anionic Coordination Manipulation Induces Phosphorus and Boron‐Rich Gradient Interphase Towards Stable and Safe Sodium Metal Batteries

Dual‐Anionic Coordination Manipulation Induces Phosphorus and Boron‐Rich Gradient Interphase Towards Stable and Safe Sodium Metal Batteries

Contact Info

Product

Resources

About

Oxygen defect regulation, catalytic mechanism, and modification of HfO₂ as a novel catalyst for lithium–oxygen batteries

Oxygen defect regulation, catalytic mechanism, and modification of HfO₂ as a novel catalyst for lithium–oxygen batteries