20. Electrochemistry
Electroplating
40PRACTICE PROBLEM
The cathode LiMn2O4 in Li-ion batteries can be replaced by LiFePO4. The use of LiFePO4 has received widespread market approval because of its low cost, non-toxicity, and iron's natural abundance. During the charging of a certain battery with a LiFePO4 cathode, about 40.8% of the lithium migrates from the cathode to the anode. To migrate the same amount of lithium to the graphite anode, what fraction of the lithium in LiMn2O4 would have to migrate in a battery that uses a LiMn2O4 cathode?
The cathode LiMn2O4 in Li-ion batteries can be replaced by LiFePO4. The use of LiFePO4 has received widespread market approval because of its low cost, non-toxicity, and iron's natural abundance. During the charging of a certain battery with a LiFePO4 cathode, about 40.8% of the lithium migrates from the cathode to the anode. To migrate the same amount of lithium to the graphite anode, what fraction of the lithium in LiMn2O4 would have to migrate in a battery that uses a LiMn2O4 cathode?