Review Published on 02 May 2016 Progress in Electrolyte-Free Fuel Cells in Nanotechnology for Energy Applications Yuzheng LuBin ZhuYixiao CaiJung-Sik KimBaoyuan WangJun WangYaoming ZhangJunjiao Li Frontiers in Energy Research doi 10.3389/fenrg.2016.00017 9,374 views 24 citations