Thermodynamic and Kinetic Properties of La<sub>20.5</sub>MgNi<sub>78.5</sub> and La<sub>15.5</sub>Mg<sub>6</sub>Ni<sub>78.5</sub> Hydrogen Storage Alloys: The Theoretical Models and Their Verifications : Table 1

Table 1: The calculated parameters in statistic thermodynamic model for La_20.5MgNi_78.5 and La_15.5Mg₆Ni_78.5.

Samples	Process	T(K)	E_α(eV)	E_β(eV)	χ_α(eV)	χ_β(eV)	χ_αβ(eV)	L(eV)	x_α	x_β	x_β- x_α	P_m(Mpa)	ΔH(kJ/mol)	ΔS(J/K/mol)
La_20.5MgNi_78.5	Absorption	303	0.0155	–0.0366	0.0409	0.00985	0.0277	0.0336	0.287	0.826	0.539	0.1814	–31.64	–109.30
		318	0.0270	0.0431	0.0313	–0.0785	–0.2176	0.0051	0.292	0.821	0.530	0.3248
		333	0.0428	0.0754	0.0074	–0.1089	–0.2914	–0.0032	0.301	0.810	0.510	0.5622
	Desorption	303	–0.0116	0.0742	0.0665	–0.1328	–0.2991	–0.0196	0.365	0.865	0.500	0.1257	35.02	117.57
		318	0.0022	0.1207	0.0464	–0.1803	–0.3952	–0.3430	0.389	0.886	0.496	0.2496
		333	0.0128	0.0839	0.0495	–0.1293	–0.2856	–0.0134	0.372	0.873	0.502	0.4387
La1_5.5Mg₆Ni_78.5	Absorption	303	0.0830	0.0152	–0.1082	–0.0313	–0.3243	0.0215	0.085	0.733	0.648	0.3195	–27.23	–99.33
		318	0.0730	0.0591	0.1128	–0.0815	–0.6188	0.0080	0.088	0.695	0.607	0.5038
		333	0.0915	0.0734	–0.0211	–0.0934	–0.5815	0.0075	0.107	0.715	0.608	0.8466
	Desorption	303	–0.0932	0.0065	0.8130	–0.0462	–0.0544	0.0130	0.175	0.843	0.668	0.2152	31.39	109.97
		318	–0.0243	0.0195	0.3615	–0.0527	–0.1009	0.0148	0.214	0.836	0.622	0.3924
		333	–0.0387	0.0507	0.4799	–0.0800	–0.1645	0.0030	0.212	0.822	0.610	0.6605