期刊
CHEMICAL COMMUNICATIONS
卷 54, 期 72, 页码 10080-10083出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8cc04136a
关键词
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资金
- French fluorine network
- Royal Society [UF130329]
- Faraday Institution [FIRG003]
- EPSRC [EP/L000202]
- Royal Society [UF130329] Funding Source: Royal Society
- Engineering and Physical Sciences Research Council [EP/S003053/1] Funding Source: researchfish
- The Faraday Institution [FIRG003] Funding Source: researchfish
- EPSRC [EP/L000202/1, EP/S003053/1] Funding Source: UKRI
In anatase TiO2, substituting oxide anions with singly charged (F,OH) anions allows the controlled formation of cation vacancies, which act as reversible intercalation sites for Mg2+. We show that ion-transport (diffusion coefficients) and intercalation (reversible capacity) properties are controlled by two critical parameters: the vacancy concentration and the local anionic environment. Our results emphasise the complexity of this behaviour, and highlight the potential benefits of chemically controlling cationic-defects in electrode materials for rechargeable multivalent-ion batteries.
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