Recently, the rational design and development of efficient faradaic deionization electrodes with high theoretical capacitance, natural abundance, and attractive conductivity have shown great promise for outstanding capacitive deionization (CDI)‐based desalination applications. Herein, the construction of novel FeOOH hybrid heterostructures with Na and Cl dopants (e.g., Na‐FeOOH and Cl‐FeOOH) via a robust hydrothermal strategy is reported, and an asymmetric CDI cell (Na‐FeOOH//Cl‐FeOOH) comprising Na‐FeOOH and Cl‐FeOOH working as the cathode and anode, respectively, is assembled. The multiple coupling effects of the specific structural features (e.g., enriched porosity, hierarchical pore alignment, and highly open crystalline framework), enhanced electrochemical conductivity, and optimized ion‐transfer property endow the FeOOH hybrid electrode with improved electrochemical performance. Impressively, the Na‐FeOOH//Cl‐FeOOH cell demonstrates a superior salt adsorption capacity (SACNaCl) of 35.12 mg g−1 in a 500 mg L−1 NaCl solution, a faster removal rate, and remarkable cycling stability. Moreover, the pseudocapacitive removal mechanism from the synergetic contribution of the Na‐FeOOH cathode and Cl‐FeOOH anode account for the significant desalination promotion of the Na‐FeOOH//Cl‐FeOOH cell.

An amorphous alloy of Fe80Zr8B11Cu1 has been prepared by mechanical alloying, milled for 72 h, and annealed in the temperature range from 673 to 1173 K. The crystallization behavior of this sample at different annealing temperatures has been investigated by x-ray diffractometry, electron microscopy, and Mössbauer spectroscopy. With the increase of annealing temperature, about a 15 nm bcc phase is formed in the amorphous base. Upon further increasing the annealing temperature to 1173 K, in addition to the metastable α -Fe (Zr,B) phase, a ZrB2 phase appears. Furthermore, the results from Mössbauer spectroscopy reveal that there are two different magnetic areas in these amorphous phases at different annealing temperatures.

Let M be a connected compact Riemannian manifold possibly with a boundary ∂M , let V ∈ C 2 (M ) such that µ(dx) := e V (x) dx is a probability measure, where dx is the volume measure, and let L = ∆ + ∇V . As a continuation to [14] where convergence in the quadratic Wasserstein distance W 2 is atudied for the empirical measures of the L-diffusion process (with reflecting boundary if ∂M = ∅), this paper presents the exact convergence rate for the subordinated process. In particular, letting (µ α t ) t>0 (α ∈ (0, 1)) be the empirical measures of the Markov process generated by L α := −(−L) α , when ∂M is empty or convex we havewhere E x is the expectation for the process starting at point x, {λ i } i≥1 are non-trivial (Neumann) eigenvalues of −L. In general,holds uniformly in x ∈ M , where in the last case E x [W 1 (µ α t , µ) 2 ] t −1 log(1 + t) holds for M = T 3 and V = 0.

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