Figure 9.

Charge–discharge behavior for composite electrode containing manganese dioxide nanofibers stirred during 1 h, mixed with MWCNT and impregnated into Ni plaques with material loading of 10 mg cm−2 at current densities of a 60 b 40 and c 20 mA cm−2

Li et al. Nanoscale Research Letters 2010 5:512   doi:10.1007/s11671-009-9518-0