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Achieving High-Capacity Cathode Presodiation Agent Via Triggering Anionic Oxidation Activity in Sodium Oxide.
Chen, Yilong; Zhu, Yuanlong; Sun, Zhefei; Kuai, Xiaoxiao; Chen, Jianken; Zhang, Baodan; Yin, Jianhua; Luo, Haiyan; Tang, Yonglin; Zeng, Guifan; Zhang, Kang; Li, Li; Xu, Juping; Yin, Wen; Qiu, Yongfu; Zou, Yeguo; Ning, Ziyang; Ouyang, Chuying; Zhang, Qiaobao; Qiao, Yu; Sun, Shi-Gang.
Afiliação
  • Chen Y; State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
  • Zhu Y; Fujian Science & Technology Innovation Laboratory for Energy, Materials of China (Tan Kah Kee Innovation Laboratory), Xiamen, 361005, China.
  • Sun Z; State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
  • Kuai X; State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Materials, Xiamen University, Xiamen, 361005, China.
  • Chen J; State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
  • Zhang B; Fujian Science & Technology Innovation Laboratory for Energy, Materials of China (Tan Kah Kee Innovation Laboratory), Xiamen, 361005, China.
  • Yin J; State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
  • Luo H; State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
  • Tang Y; State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
  • Zeng G; State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
  • Zhang K; State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
  • Li L; State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
  • Xu J; State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
  • Yin W; State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
  • Qiu Y; Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China.
  • Zou Y; Spallation Neutron Source Science Center, Dongguan, 523803, China.
  • Ning Z; Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, China.
  • Ouyang C; Spallation Neutron Source Science Center, Dongguan, 523803, China.
  • Zhang Q; School of Materials Science and Engineering, Dongguan University of Technology, Guangdong, 523808, China.
  • Qiao Y; State Key Laboratory of Physical Chemistry of Solid Surfaces, Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
  • Sun SG; Fujian Science & Technology Innovation Laboratory for Energy, Materials of China (Tan Kah Kee Innovation Laboratory), Xiamen, 361005, China.
Adv Mater ; 36(36): e2407720, 2024 Sep.
Article em En | MEDLINE | ID: mdl-39032096
ABSTRACT
Compensating for the irreversible loss of limited active sodium (Na) is crucial for enhancing the energy density of practical sodium-ion batteries (SIBs) full-cell, especially when employing hard carbon anode with initially lower coulombic efficiency. Introducing sacrificial cathode presodiation agents, particularly those that own potential anionic oxidation activity with a high theoretical capacity, can provide additional sodium sources for compensating Na loss. Herein, Ni atoms are precisely implanted at the Na sites within Na2O framework, obtaining a (Na0.89Ni0.05□0.06)2O (Ni-Na2O) presodiation agent. The synergistic interaction between Na vacancies and Ni catalyst effectively tunes the band structure, forming moderate Ni-O covalent bonds, activating the oxidation activity of oxygen anion, reducing the decomposition overpotential to 2.8 V (vs Na/Na+), and achieving a high presodiation capacity of 710 mAh/g≈Na2O (Na2O decomposition rate >80%). Incorporating currently-modified presodiation agent with Na3V2(PO4)3 and Na2/3Ni2/3Mn1/3O2 cathodes, the energy density of corresponding Na-ion full-cells presents an essential improvement of 23.9% and 19.3%, respectively. Further, not limited to Ni-Na2O, the structure-function relationship between the anionic oxidation mechanism and electrode-electrolyte interface fabrication is revealed as a paradigm for the development of sacrificial cathode presodiation agent.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Adv Mater Ano de publicação: 2024 Tipo de documento: Article
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Adv Mater Ano de publicação: 2024 Tipo de documento: Article