Vacancy and Composition Engineering of Manganese Hexacyanoferrate for Sodium-Ion Storage

Abd El-Hady, Deia3; Lyu, Yuxiang1; Zhan, Sikai1; Yang, Jixiang1; Wang, Yian1; Yang, Fei1,2; Zhao, Qinglan1; Gu, Meng2; Shao, Minhua1,4

2022-06-01

10.1021/acsaem.2c01085

ACS Applied Energy Materials   影响因子和分区

2574-0962

Manganese hexacyanoferrate (MnHCF) with an open framework is suitable for accommodating sodium ions. However, it suffers from severe capacity decay caused by the large structural deformation resulting advantage of the strong chelation between EDTA and Mn ions, a strategy employing Mn vacancies (VMn) in combination with the introduction of Ni is proposed to suppress the J-T distortion of MnHCF. A Ni-doped MnHCF with VMn and a low crystal water content (K1.95Na0.05Ni0.02Mn0.93[Fe(CN)6] ???0.05middot0.41H2O) is prepared, which delivered an improved capacity retention of 80% at 0.5C after 100 cycles. This work provides a combined vacancy and composition engineering strategy for effective suppression of J-T distortion in the MnHCF framework toward high-performance sodium-ion batteries.

sodium-ion battery Prussian blue analogue manganese hexacyanoferrate Jahn-Teller distortion cycling stability

SCI ; EI

英语

其他

Ministry of Education in Saudi Arabia[MoE-IF-20-02/04] ; Hong Kong RGC Postdoctoral Fellowship Scheme[HKUST PDFS2021-4S12]

Chemistry ; Energy & Fuels ; Materials Science

Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary

WOS:000820796300001

AMER CHEMICAL SOC

20223012400809

Binary alloys ; Iron compounds ; Jahn-Teller effect ; Manganese ; Metal ions

Metallurgy:531.1 ; Manganese and Alloys:543.2 ; Secondary Batteries:702.1.2 ; Atomic and Molecular Physics:931.3

Web of Science

1.Hong Kong Univ Sci & Technol, Dept Chem & Biol Engn, Hong Kong 999077, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China
3.Univ Jeddah, Dept Chem, Coll Sci, Jeddah 21589, Saudi Arabia
4.Hong Kong Univ Sci & Technol, Energy Inst, Hong Kong 999077, Peoples R China

Abd El-Hady, Deia,Lyu, Yuxiang,Zhan, Sikai,et al. Vacancy and Composition Engineering of Manganese Hexacyanoferrate for Sodium-Ion Storage[J]. ACS Applied Energy Materials,2022,5:8547-8553.

Abd El-Hady, Deia.,Lyu, Yuxiang.,Zhan, Sikai.,Yang, Jixiang.,Wang, Yian.,...&Shao, Minhua.(2022).Vacancy and Composition Engineering of Manganese Hexacyanoferrate for Sodium-Ion Storage.ACS Applied Energy Materials,5,8547-8553.

Abd El-Hady, Deia,et al."Vacancy and Composition Engineering of Manganese Hexacyanoferrate for Sodium-Ion Storage".ACS Applied Energy Materials 5(2022):8547-8553.