本文报道了一种合成三维分层多孔花状结构的NiCoO_2的简易方法及其在锂离子电池负极方面的应用。花状NiCoO_2是由超薄的多孔片所构成。该锂离子电池负极材料拥有优异的机械性能和较短的锂离子扩散路径。得益于其结构特点,该花状NiCoO_2...本文报道了一种合成三维分层多孔花状结构的NiCoO_2的简易方法及其在锂离子电池负极方面的应用。花状NiCoO_2是由超薄的多孔片所构成。该锂离子电池负极材料拥有优异的机械性能和较短的锂离子扩散路径。得益于其结构特点,该花状NiCoO_2展现了优异的倍率性能(811.3 mAh g^(-1),200 mA g^(-1))。这优异的电化学性能归因于它的多孔分层结构和足够的空隙空间,超薄多孔的结构有效的增加了活性材料与电解液的接触面积,减少了锂离子的扩散路径,缓冲了材料在循环过程中的体积改变。展开更多
A crucial challenge still remains in the development of efficient and stable electrocatalysts for oxygen evolution reaction(OER)with desirable conductivity,a high surface area and rich oxygen vacancies.Herein,a type o...A crucial challenge still remains in the development of efficient and stable electrocatalysts for oxygen evolution reaction(OER)with desirable conductivity,a high surface area and rich oxygen vacancies.Herein,a type of Ag-doped mesoporous NiCoO nanorod with rich oxygen vacancies(NiCoO@Ag40/NF-Ar)for OER is prepared via an electrodeposition-hydrothermal reaction and the subsequent annealing treatment process under an Ar atmosphere.The electrodeposited Ag film is found to direct the uniform growth of the nanowire arrays of NiCo hydroxide precursors compared to the nanoparticles of NiCo hydroxide in the absence of the Ag film.展开更多
文摘本文报道了一种合成三维分层多孔花状结构的NiCoO_2的简易方法及其在锂离子电池负极方面的应用。花状NiCoO_2是由超薄的多孔片所构成。该锂离子电池负极材料拥有优异的机械性能和较短的锂离子扩散路径。得益于其结构特点,该花状NiCoO_2展现了优异的倍率性能(811.3 mAh g^(-1),200 mA g^(-1))。这优异的电化学性能归因于它的多孔分层结构和足够的空隙空间,超薄多孔的结构有效的增加了活性材料与电解液的接触面积,减少了锂离子的扩散路径,缓冲了材料在循环过程中的体积改变。
基金financially supported by the National Natural Science Foundation of China(U1662119)the Fundamental Research Funds for the Central Universities(15CX05031A).
文摘A crucial challenge still remains in the development of efficient and stable electrocatalysts for oxygen evolution reaction(OER)with desirable conductivity,a high surface area and rich oxygen vacancies.Herein,a type of Ag-doped mesoporous NiCoO nanorod with rich oxygen vacancies(NiCoO@Ag40/NF-Ar)for OER is prepared via an electrodeposition-hydrothermal reaction and the subsequent annealing treatment process under an Ar atmosphere.The electrodeposited Ag film is found to direct the uniform growth of the nanowire arrays of NiCo hydroxide precursors compared to the nanoparticles of NiCo hydroxide in the absence of the Ag film.
