TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preferred Components: The matrix comprises silicon dioxide (SiO2). The alloy particles have a diameter of 5-300 micrometers. The weight ratio of the alloy to the SiO2 is 1:0.2-1:2.5. The hydrogen storage alloy is lanthanum nickel aluminum (LaNi(4.3)Al(0.7)), lanthanum nickel magnesium (LaNi(4.5)Mg(0.5)), lanthanum nickel iron (LaNi(4.5)Fe(0.5)), lanthanum nickel manganese (LaNi(4.5)Mn(0.5)) and/or lanthanum nickel carbonyl (LaNi(4.5)CO(0.5)). Preferred Method: The mixing is carried out at 60-100 degrees C. The solidifying step comprises removing the solvent. The method for removing the solvent comprises use of a vacuum of 0.1-1 Pa for 5-10 hours. The mixture is allowed to stand for 6-15 days at 20-40 degrees C before removing the solvent. The step of preparing the hydrogen storage alloy particles comprises: melting a raw material comprising L, Ni and M to form an alloy; and crushing the alloy into particles. The method further comprises a step of: absorbing and desorbing hydrogen at least one time. The step of preparing a matrix forming material comprises: mixing propyl alcohol and tetrapropyl orthosilicate at a volume ratio of 1:1.2-1:2.5 to form a first solution; mixing propyl alcohol and water at a volume ratio of 1:0.3-1:0.8 to form a second solution; adjusting pH of the second solution to 1-3; mixing the first solution and the second solution at a volume ratio of 1:1-1:2 to form a third solution; and stirring the third solution at a stirring speed of 50-150 r/minutes for 2-8 hours to provide the matrix forming material, where the mixing of the first solution and the second solution is at 60-90 degrees C.    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The matrix forming material comprises a solvent. The matrix forming material comprises tetrapropyl orthosilicate. The weight ratio of the hydrogen storage alloy particles to tetrapropyl orthosilicate is 1:1-1:10. Preferred Definitions:    L = lanthanum;    M = at least one element comprising Al, Fe, Mg, Mn or Co; and    x = 0.1-4.    EXAMPLE - Raw material was melted in a vacuum induction furnace to form an alloy ingot, which was lanthanum nickel aluminum of formula (LaNi(4.3)Al(0.7)) was prepared. The alloy ingot in a vacuum quartz tube was put into a heat treatment furnace. The temperature was 1200 degrees C and held for 10 hours. After the alloy ingot was cooled, it was pulverized into millimeter range particles by mechanical pulverization. The particles were sieved with a 200 mesh sieve after they underwent 40 times of hydrogen absorption and desorption in a computer-controlled Sieverts device. The sieved fine particles were collected and placed in a sealed container. The prepared alloy particles were marked as sample M1. Propyl alcohol (40 ml) and tetrapropyl orthosilicate (80 ml) were taken respectively using a measuring cylinder and put into a flask. The mixture was stirred with a glass rod in order to mix uniformly. Then the mixed solution was put into a three-neck bottle. The prepared solution was marked as C1A. Propyl alcohol (90 ml) and distilled water (40 ml) were taken respectively using a measuring cylinder and put into a flask. The mixture was stirred with a glass rod in order to mix uniformly. Dilute hydrochloric acid (concentration of 25%) was added into the mixture during stirring. The acidity of the solution was measured with a pH indicator paper. The pH was adjusted to 1. The prepared solution was marked as C1B. Then, the solution C1B was added dropwise into the solution C1A by a separation funnel. Meanwhile the temperature of the solution was held at 90 degrees C in a water bath. The obtained solution was stirred at a low speed (110 r/minute) with an electromagnetic stirrer for 5 hours to provide a matrix forming material. The matrix forming material was transferred from the three-neck bottle to a beaker. Meanwhile the solution was stirred continuously using a mechanical stirrer (the stirring speed was 100 r/minute). Alloy particles M1 (32 g) were added and dispersed in the matrix forming material. After the alloy particles were mixed with the matrix forming material uniformly, the beaker was sealed and the mixture was allowed to stand in a thermostatic water bath at 90 degrees C for 3 hours. The mixture was further left standing at room temperature for about 10 days. Then the mixture was vacuumized under the pressure of 0.5 Pa and held for 5 hours. After the solvent was removed sufficiently, the hydrogen storage material was obtained.