Why can the complex sugar cellulose store more energy than sugar glucose

Cellulose has more compound bonds. It comprises of numerous glucose atoms combined. Notwithstanding, we don't more often than not consider cellulose a sugar. It is all the more legitimately called a polysaccharide. 
Cellulose is basically used to deliver paperboard and paper. Littler amounts are changed over into a wide assortment of subsidiary items, for example, cellophane and rayon.

Nonmetals usually react by gaining electrons