m ) for Lithium‐Ion (Shuttlecock) BatteriesAbstract
The synthesis and characterization of 
were carried out in order to improve the electrochemical properties of 
for lithium ion batteries. Single phase of 
(
and 
in hexagonal setting) was obtained by heating a reaction mixture of 
, 
, and 
at 750°C under an oxygen stream for 20 h and examined in nonaqueous lithium cells. 
was oxidized to 
in the voltage range of 3.5–4.8 V. X‐ray diffraction examinations of 
indicated that the reaction
proceeded in a single phase over the entire range. The rechargeable capacity was observed to be about 150 mAh · g−1 based on the sample weight. DSC measurements on fully charged 
and 
at 4.8 V were also done and the effects of substitution of aluminum for nickel in 
upon the electrochemical properties were discussed in terms of capacity, failure, and safety coupled with overcharge.