Electrochemical intercalation of lithium in the titanium hydrogeno phosphate Ti(HPO4)2·H2O
作者： M. Satya Kishore , V. Pralong , V. Caignaert , U.V. Varadaraju , B. Raveau
DOI: 10.1016/J.JPOWSOUR.2007.03.051
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摘要: Abstract The electrochemical reactivity of the layered titanium hydrogeno phosphate Ti(HPO4)2·H2O versus lithium has been studied. Lithium intercalation occurs at ∼2.5 V with low polarization, leading to a new lithiated Ti(III) phase, LiTi(HPO4)2·H2O. exhibits reversible capacity 80 mAh g−1 in voltage window 1.8–3.5 V C/10 rate. stable reveals that presence H2O lattice is not affecting reaction. reversibility reaction demonstrated by extracting from LiTi(HPO4)2·H2O and host structure intact. behaviour dehydrated phases Ti(HPO4)2 TiP2O7 also investigated.
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