基金973 program of China(2015CB932500,2014CB932401)Beijing Nova Program(20161151041)+1 种基金National Natural Science Foundation of China(51722207)Tsinghua University Initiative Scientific Research Program(20151080367)~~
基金supported by the National Natural Science Foundation of China (51872334, 51874362 and 51572299)the Innovation-Driven Project of Central South University (2017CX001 and 2018CX004)the Natural Science Foundation of Hunan Province,China (2018JJ1036)
文摘过渡金属磷化物由于其独特的物理化学特性,在钠离子电池和电催化析氢反应领域被广泛研究.然而,过渡金属磷化物存在严重团聚和动力学迟缓等问题.本研究将双金属磷化物(Ni2P/Zn P4)嵌入到P掺杂的碳微球中,得到的纳米材料具有结构稳定、电荷转移快和活性位点丰富等优势.结果表明,结构优化的Ni2P/Zn P4复合材料作为钠离子电池负极材料具有良好的电化学性能,包括高比容量、循环稳定和倍率性能佳等.同时, Ni2P/Zn P4复合材料也表现出良好的电催化析氢性能,其过电势为62 mV, Tafel斜率为53 m V dec^-1,且稳定性良好.
基金The authors gratefully acknowledge the financial support of the National Natural Science Foundation of China (Nos. 51102194, 51323011, and 51121092), the Doctoral Program of the Ministry of Education (No. 20110201120040) and the Nano Research Program of Suzhou City (ZXG2013003). S. Shen is supported by the Foundation for the Author of National Excellent Doctoral Dissertation of China (No. 201335) and the Fundamental Research Funds for the Central Universities.