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01189 am a22001573u 4500 |
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146313 |
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|a Roberts, Mattthew
|e author
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|a Vitins, GIrts
|e author
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|a Denuault, Guy
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|a Owen, John
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|a High throughput electrochemical observation of structural phase changes in liFe1-xMnxPO4 during charge and discharge
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|c 2010-02-09.
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|z Get fulltext
|u https://eprints.soton.ac.uk/146313/1/185654_0_art_1_kq4957.pdf
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|a Electrochemical lithium extraction and insertion in LiFe1-xMnxPO4 has been investigated by high throughput cyclic voltammetry on an array of samples with different degrees of carbon coating to assist electron transfer. A linear decrease in the capacity was observed with an increase in the value of x and was explained by a gradual loss of electronic conductivity due to the manganese substituent. Slow scan voltammograms show differences in peak shapes corresponding to a heterogeneous (two-phase) reaction in LiFePO4 and a homogeneous (one-phase) reaction of iron in LiFe0.2Mn0.8PO4, illustrating a general interpretation of voltammograms to differentiate these mechanisms.
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|a Article
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