Synthesis, crystal structures and semiconducting properties of new hexacyanidometallates

Qiao, Xianji; Qiu, Yi; Xin, Junjie; Chen, Da; Ma, Zili; Corkett, Alex J.; Cai, Guohong; Cai, Guanqun; Qu, Shangqing; Wang, Yuchao; Zhu, Zhenqi; Gao, Yiman; Wang, Zhigang; Dronskowski, Richard; Li, Guobao; Sun, Junliang

doi:10.1039/d3dt00384a

Dalton Trans.

2023

DOI: 10.1039/d3dt00384a

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Synthesis, crystal structures and semiconducting properties of new hexacyanidometallates

Xianji Qiao

Yi Qiu

Junjie Xin

et al.

Abstract: We describe the synthesis and properties of a number of mixed hexacyanidometallatesmetal ferrocyanides with the formula A2[MFe(CN)6]·xH2O (A = Na, K; M = Mg, Ca, Sr and Ba). All crystal...

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Cited by 6 publications

References 49 publications

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Heat‐Resistant Carbon‐Coated Potassium Magnesium Hexacyanoferrate Nanoplates for High‐Performance Potassium‐Ion Batteries

Liao,

Yuan,

et al. 2024

Angewandte Chemie

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Metal hexacyanoferrates (HCFs) are regarded as promising cathode materials for potassium‐ion batteries (PIBs) on account of their low cost and high energy density. However, the difficult‐to‐remove [Fe(CN)6] vacancies and crystal water lead to structural instability and capacity deterioration as well as the stereotype of poor thermostability of conventional HCFs. Herein, we report (100) face‐oriented potassium magnesium hexacyanoferrate (KMgHCF) nanoplates with low [Fe(CN)6] vacancies and high crystallinity, enabling thermostability up to 550 °C, high‐temperature carbon coating and crystal water elimination. The as‐obtained KMgHCF/C nanoplates exhibit superior potassium storage properties, including a large reversible capacity of 84.6 mAh g−1, a high voltage plateau of 3.87 V, excellent long‐term cycling performance over 15000 cycles and high rate capability at 5 A g−1. The unprecedented cycling stability of KMgHCF/C is attributed to the synergistic effect of a highly reversible two‐phase reaction, low [Fe(CN)6] vacancies and no crystal water, a specially exposed steady (100) surface, and a protective carbon coating. This work provides a new material selection and modification strategy for the practical application of HCFs in PIBs.

show abstract

Heat‐Resistant Carbon‐Coated Potassium Magnesium Hexacyanoferrate Nanoplates for High‐Performance Potassium‐Ion Batteries

Liao,

Yuan,

et al. 2024

Angewandte Chemie

View full text Add to dashboard Cite

show abstract

Heat‐Resistant Carbon‐Coated Potassium Magnesium Hexacyanoferrate Nanoplates for High‐Performance Potassium‐Ion Batteries

Liao,

Yuan,

et al. 2024

Angew Chem Int Ed

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Enhanced cadmium removal by a magnetic potassium ferrocyanide framework: Performance and mechanism study

Chen,

Liu,

Pan

et al. 2024

Ecotoxicology and Environmental Safety

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Synthesis, crystal structures and semiconducting properties of new hexacyanidometallates

Abstract: We describe the synthesis and properties of a number of mixed hexacyanidometallatesmetal ferrocyanides with the formula A2[MFe(CN)6]·xH2O (A = Na, K; M = Mg, Ca, Sr and Ba). All crystal...

Cited by 6 publications

References 49 publications

Heat‐Resistant Carbon‐Coated Potassium Magnesium Hexacyanoferrate Nanoplates for High‐Performance Potassium‐Ion Batteries

Heat‐Resistant Carbon‐Coated Potassium Magnesium Hexacyanoferrate Nanoplates for High‐Performance Potassium‐Ion Batteries

Heat‐Resistant Carbon‐Coated Potassium Magnesium Hexacyanoferrate Nanoplates for High‐Performance Potassium‐Ion Batteries

Enhanced cadmium removal by a magnetic potassium ferrocyanide framework: Performance and mechanism study

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