Crystalline and amorphous metal sulfide composite electrode materials with long cycle life:Preparation and performance of hybrid capacitors

Crystalline@amorphous NiCo_(2)S_(4)@MoS_(2)(v-NCS@MS)nanostructures were designed and constructed via an ethylene glycol-induced strategy with hydrothermal synthesis and solvothermal method,which simultaneously realized the defect regulation of crystal NiCo_(2)S_(4) in the core.Taking advantage of the flexible protection of an amor-phous shell and the high capacity of a conductive core with defects,the v-NCS@MS electrode exhibited high specif-ic capacity(1034 mAh·g^(-1) at 1 A·g^(-1))and outstanding rate capability.Moreover,a hybrid supercapacitor was assembled with v-NCS@MS as cathode and activated carbon(AC)as anode,which can achieve remarkably high specific energy of 111 Wh·kg^(-1) at a specific power of 219 W·kg^(-1) and outstanding capacity retention of 80.5%after 15000 cycling at different current densities.

论新时代青年参与乡村振兴目标契合、现实困境与发展路径

乡村兴,百姓安,国家稳。乡村振兴,人才是关键,青年人才是主力军。乡村振兴是青年需要扛起的重任,青年成长与乡村发展同频共振,乡村是青年发展的沃土,青年在乡村沃土中绽放。但是,结合有关政策和现实情况来看,当前我国青年在参与乡村振兴的进程中存在“制度不完善”“乡村难就业”“文化不认同”等问题。通过分析青年参与乡村振兴的现实困境后,提出完善青年人才“引”“用”“留”的政策,发展乡村产业,塑造乡土文化等措施,助力青年与乡村实现双向奔赴。