Crystalline@amorphous NiCo₂S₄@MoS₂ (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 NiCo₂S₄ 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 specific capacity (1 034 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 15 000 cycling at different current densities.

以中北大学“化学工程与工艺”专业为例，构建“学训赛创”四元互促人才培养模式，在扎实的理论教学基础上，融入实验、实习、实训，并结合学科赛事，全面提升学生实践创新能力。实践结果表明，该模式强化了学生对复杂工程问题的处理能力，并显著提升了师资水平，为行业培养了工程创新人才，展现出良好的示范性和推广价值。

A gold catalyst of Au/ pyrenyl-graphdiyne (Pyr-GDY) was prepared by anchoring small size of gold nanoparticles (Au NPs) on the surface of Pyr-GDY for electrocatalytic nitrogen reduction reaction (eNRR), in which Au NPs with a size of approximately 3.69 nm was evenly distributed on spongy-like porous Pyr-GDY. The catalyst exhibited a good electrocatalytic activity for N₂ reduction in a nitrogen-saturated electrolyte, with an ammonia yield of 32.1 μg·h^-1·mg_cat^-1 at -0.3 V (vs RHE), 3.5 times higher than that of Au/C (Au NPs anchored on carbon black). In addition, Au/Pyr-GDY showed a Faraday efficiency (FE) of 26.9% for eNRR, and a good catalysis durability for over 22 h.