Nano-scale nickel hydroxide was pre pared by precipitate transformatio n method in the paper￡(r)Effect of rinse pH on the agglomeration degree and elec trochemical performance of nano￡-sc ale Ni ￡¨OH￡(c)￡2 w...Nano-scale nickel hydroxide was pre pared by precipitate transformatio n method in the paper￡(r)Effect of rinse pH on the agglomeration degree and elec trochemical performance of nano￡-sc ale Ni ￡¨OH￡(c)￡2 was investigated￡(r)The mea-surement results of XRD and TEM indic ate that the prepared nano￡-scale Ni ￡¨OH￡(c)2 isβ?-phase,the grain size is in the rang of 10?50nm,and rinse pH exerts a great influence on the agglomera tion degree of nano￡-scale Ni ￡¨OH￡(c)￡2 ￡(r)The agglomeration of material becom es very obvious when rinse pH ￡1/211￡?and the density of nano￡-scale Ni ￡¨OH￡(c)2 is enhanced obviously￡(r)Cyclic voltammetry￡¨CV￡(c)and simulate cells experiment show t hat nano￡-scale Ni ￡¨OH￡(c)2 with suitable agglomeration degree have better electrochemical CV performa nce than those with ideal disperse Ni ￡¨OH￡(c)2 and micron Ni ￡¨OH￡(c)2 ￡?and its proton diffusion coefficie nt is also the highest￡(r)It can elevate the discharge potential platform and prolongs discharge tim e,so the utilization ratio of Ni ￡¨OH￡(c)￡2 is raised￡(r)展开更多
文摘Nano-scale nickel hydroxide was pre pared by precipitate transformatio n method in the paper￡(r)Effect of rinse pH on the agglomeration degree and elec trochemical performance of nano￡-sc ale Ni ￡¨OH￡(c)￡2 was investigated￡(r)The mea-surement results of XRD and TEM indic ate that the prepared nano￡-scale Ni ￡¨OH￡(c)2 isβ?-phase,the grain size is in the rang of 10?50nm,and rinse pH exerts a great influence on the agglomera tion degree of nano￡-scale Ni ￡¨OH￡(c)￡2 ￡(r)The agglomeration of material becom es very obvious when rinse pH ￡1/211￡?and the density of nano￡-scale Ni ￡¨OH￡(c)2 is enhanced obviously￡(r)Cyclic voltammetry￡¨CV￡(c)and simulate cells experiment show t hat nano￡-scale Ni ￡¨OH￡(c)2 with suitable agglomeration degree have better electrochemical CV performa nce than those with ideal disperse Ni ￡¨OH￡(c)2 and micron Ni ￡¨OH￡(c)2 ￡?and its proton diffusion coefficie nt is also the highest￡(r)It can elevate the discharge potential platform and prolongs discharge tim e,so the utilization ratio of Ni ￡¨OH￡(c)￡2 is raised￡(r)
