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The electrical conductivities of complex hydrides Li_2(BH_4)(NH_2) and Li_4(BH_4)(NH2_)_3 consisting of (BH_4)^− and (NH_2)^− anions are investigated focusing on their low melting temperatures (365 K ...for Li_2(BH_4)(NH_2) and 490 K for Li_4(BH_4)(NH_2)_3). The two hydrides show lithium fast-ion conductivities of about 1×10^<−4> S·cm^<−1> at room temperature. After melting, the total ion conductivities of Li_2(BH_4)(NH_2) and Li_4(BH_4)(NH_2)_3 reach 6×10^<−2> S·cm^<−1> (378 K) and 2×10^<−1> S·cm^<−1> (513 K), respectively. The crystal structure and local atomistic structures closely correlated with the lithium ion conduction before and after melting are also discussed.続きを見る
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