Heterostructured Ni3B/Ni nanosheets for excellent microwave absorption and supercapacitive application

Intelligent Tunable Wave-Absorbing CNTs/VO2/ANF Composite Aerogels Based on Temperature-Driving

“…A perfect impedance match is defined when |Z in − 1| (eq S5) is close to 0, which is a prerequisite for providing excellent EMA performance. 47 We can see that as the temperature increases, the impedance matching of CV13 is gradually shifted from high to low frequencies at the closest perfect |Z in − 1| value (| Z in − 1| = 0), which also gives the composite aerogel the ability to modulate the EMA frequency. 3.3.…”

Constructing Transition Metal Single-Atom-Modified MoB2: Extraordinary Electrocatalytic Hydrogen Evolution and Mechanism Investigation

“…As shown in Figure S4b, the characteristic peaks of Ni are located at 853.2/870.8 eV, 857.5/875.3 eV, and 863.0/880.9 eV, which can be attributed to Ni λ+ (0 < λ < 2), Ni 2+ and the satellite, respectively. The existence of multivalent Ni may be related to the multiple coordination modes between single atom Ni and B, which is similar to the Ni–B interaction in nickle boride (Ni x B y ) intermetallic compounds and does not follow the rules of valency. − Meanwhile, no metallic Ni 0 from Ni nanoparticles is detected, which eliminated the agglomeration of Ni. X-ray absorption near edge structure (XANES) and the extend X-ray absorption fine structure (EXAFS) of Ni K-edge were employed to further confirm the electronic structure and chemical configuration of Ni in Ni-MoB 2 .…”