Ni(OH)2,电极材料,光谱特征,掺杂元素用XRD和Raman光谱等方法对几种典型球形Ni(OH)2电极材料进行了表征,并分析了材料的表观形貌,掺杂元素和微观结构等对其充放电性能的影响.结果表明,有较好填充性和充放电性能Ni(OH)2电极材料所具有的特征为,颗粒的球形好且结晶完好,晶粒较小,较大的晶格参数c,并在510和3596 ...
本文要点 要点1.通过同位素标记的电化学微分质谱表征、原位Raman光谱表征以及DFT理论计算,发现Ni氢氧化物电化学氧化生成NiOO-活性物种之后由于Ni-O共价键变弱,NiOO-还原释放O2。 要点2.通过这种氧化-还原处理过程发展了电解水和能量存储的...
(OH)2电极材料进行了表征,并分析了材料的表观形貌,掺杂元素和微观结构等对其充放电性能的影响.结果表明,有较好填充性和充放电性能Ni(OH)2电极材料所具有的特征为,颗粒的球形好且结晶完好,晶粒较小,较大的晶格参数c,并在510和3596 cm-1处可以生成Raman光谱峰;而XRD和Raman光谱方法则是评价Ni(OH)2电极材料性能...
NiFe氢氧化物纳米片在449和527 cm-1处有明显的拉曼峰,这分别是由于Ni2+(OH)2中Ni2+-OH和Ni2+-O键的振动引起的。这些峰在过电位为0 ~ 166mV的范围内保持不变,表明在此条件下纳米片中的Ni保持为Ni2+(OH)2,其OER活性不高。...
Raman spectra have been employed to clarify the degree of graphitization and the effect of nitrogen doping odCrathapfoNtepwRioRedGnaeGosrOgfh/rdND.ieufFetieb(icogOatofuonHmdrdtei)hps 2v5eaoe(rr0hrpeds.erd9ueet8resws41reG8oi)n,t4,ah9tbit.smoatAthnmphnadleityci(RoinIndfDcagorG/meIptGOh...
raman可以看出来
In this work, Ni(OH)2/GO nanocomposite is synthesized using an improved hummers method followed by ahydrothermal method. Theoxygen evolution reactionof the Ni(OH)2/GO nanocomposite is studied. The prepared nanocomposite is characterized byXRD, SEM,TEM, XPS, and Raman techniques. The Ni(OH)2na...
通过XPS、Raman、EDX等表征手段证明了Fe3+成功掺入了Ni(OH)₂/NiOOH的晶格中,而且明显增加了修饰的磷酸根含量。磷酸根主要吸附在Fe3+上,有效诱导产生并稳定Ni3+/Ni4+,Fe3+与磷酸根的共修饰体现了强烈的相互作用。此外,Fe3+的掺杂和磷酸根的修饰没有明显改变催化剂的纳米片状形貌。
(d) Selected Raman spectra of Ni(OH)2nanoparticles with different sizes. (e) Full-width at the half-maximum value at the peak of 3580 cm−1is as a function of the reciprocal particle size (1/a). (f) Optical photographs showing the transparent green Ni(OH)2gels. Inset shows that...
Ni(OH)2-NiOOH/NiFeP异质结构在HMFOR的动态转化 ▲Fig. 4 In-situ characterization for the surface reconstruction of NiFeP catalyst.In-situ Raman study of NiFeP catalysts during (a) OER in 0.1 M KOH electrolyte and (b) HMFOR in 0.1 M KOH electrolyte with 10 mM HMF. (c) In-situ Raman...