## 1 Introduction  
Thermites are a mixture of metallic and oxide powders, which are widely used in the military and civil applications [1; 2; 3; 4; 5]. Thermite reactions will release a large amount of heat and provide a high combustion temperature. Therefore, thermite powders could not only serve as pyrotechnics, but could be added into explosive formulations to improve the energy densities. More recently, the fragmentation of rock masses via thermites has been reported besides traditional welding applications [6]. A thermite reaction generates less noise and ground vibrations than explosive blasting, which benefits the protection of the surrounding facilities. The thermite reaction usually initiates in the solid-solid phase with a slow reaction rate due to the high melting point of most metal oxides. With the appearance of the gas phase, the system pressure will be substantially elevated, resulting in a higher reaction rate [7]. Hence, oxidizers of low melting points, such as MoO\({}_{3}\), BaO and Bi\({}_{2}\)O\({}_{3}\), are favorable for the application of pressure wave generations [8]. In addition, the enthalpy of a reaction between MoO\({}_{3}\) and aluminum particles is the highest among oxidizers of low melting points. Therefore, MoO\({}_{3}\) has become one of the most popular metal oxides for thermites [9; 10; 11]. The reaction performance of thermites depends not only on the size, shape and nature of the oxidizer/metal, but on the assembly structure [12; 13; 14; 15; 16]. [PERSON] et al. [16] used iron fluoride as an oxidizer to prepare thermite, and the resulting product showed higher reactivity but lower reaction heat release than thermite with iron oxide. [PERSON] et al. [17] employed a bimetal system (Al/Ni) in the thermite formulation, leading to a decrease in the combustion temperature. With the size of the reactants reduced to nano-scale, the reaction rate of thermite could be significantly accelerated [18; 19]. However, nanoparticles tend to agglomerate together due to the high specific surface area, leading to a heterogeneous blend, which will weaken the size effect. Therefore, micro-structure assembly techniques, such as electrospray [20], the sol-gel method [21; 22], microfluidic method [23] and 3D printing strategy [24], have been widely developed over the last few years. These efforts aim to achieve the ultimate goal, i.e., assembled structures' maintenance of the nano-scale characteristics as well as good flowability and processibility [25]. Binders are necessary with respect to micro-structure assembly. They not only help bond the reactants together to form an intact structure, but also provide a direct heat and mass transfer path [26; 27]. The influence of fluoropolymers as a binder has been extensively studied due to the pre-ignition effect between the fluorine element and aluminum [20; 28; 29; 30]. However, fluoropolymers would not benefit the energy release until they react with aluminum particles. On the contrary, energetic polymers are more active than fluoropolymers. The reaction of energetic polymers is ahead of a thermite reaction. What is more, the energy density of thermite would also be increased by the energetic polymer [31; 30; 32]. When it comes to the heat release, the reaction rate matters the most. And the reaction rate is controlled by heat and mass transfer efficiency. A recent study has revealed that stacks assembled by hybrid 2D- and 3D-shaped particles owe a better heat transfer efficiency than those by single-shape alignment [33; 34]. Although many studies have been performed to improve the performance of nanothermic, the energy release of nanothermic is still undesirable due to the sintering of aluminum particles which will cause an incomplete reaction [35]. To solve this problem, we changed the stack structure of oxidizer and aluminum particles in the hope to improve the heat transfer efficiency. Additionally, an energetic binder was incorporated to prevent sintering, as well as improve the energy density.