Theoretical capacity

Although Li[Ti2]04 and Li4Ti,Ol2 have low theoretical capacities (161 and 175 mAhg-1, respectively), they have excellent structural properties for an insertion electrode. The spinel structures are excep-... 

Table 1. Theoretical capacities, rechargeable capacities, average operating voltages, and energy densities of secondary lithium batteries with insertion materials...

MPPs for fine chemicals are generally mn at well below their maximum capacity. At present, 60-70% of the maximum capacity is a representative figure. The theoretical capacity is difficult to define for several reasons ... 

Knowing that for any pure natural graphite the capacity at low rate should be very close to the theoretical capacity, it did not become a surprise when the reversible capacity value of LBG1025 reached 365 mAh/g at C/20 rate it was still as high as 349.5mAh/g at C/5 rate. 

There are several Li-Sn intermetallics [2], Their structure and theoretical capacities differ in the wide range (Table 1). 

Thus, in the process of Li+ reaction with tin, theoretical capacity of Li-Sn alloys can reach up to 790 mA-h/g. Theoretical capacity of pure Sn is 994 mA-h/g (7234 mA-h/cm3). Formation of such alloys occurs in the range of potentials from 0 to 0.8V versus lithium (Table 2) or in the temperature window 0-800°C. Charge-discharge curves have an inclined form. 

Many hydrides have a theoretical capacity to store a higher percentage of hydrogen by weight and are a major subject of ongoing research. Research also continues in the area of suboptimal hydrogen release. This is the release of only a part of the stored hydrogen. 

---