Li2(Bh4)(nh2) nanoconfined in sba-15 as solid-state electrolyte for lithium batteries

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Abstract

Solid electrolytes with high Li-ion conductivity and electrochemical stability are very important for developing high-performance all-solid-state batteries. In this work, Li2 (BH4)(NH2) is nanoconfined in the mesoporous silica molecule sieve (SBA-15) using a melting–infiltration approach. This electrolyte exhibits excellent Li-ion conduction properties, achieving a Li-ion conductivity of 5.0 × 10−3 S cm−1 at 55◦C, an electrochemical stability window of 0 to 3.2 V and a Li-ion transference number of 0.97. In addition, this electrolyte can enable the stable cycling of Li|Li2 (BH4)(NH2)@SBA-15|TiS2 cells, which exhibit a reversible specific capacity of 150 mAh g−1 with a Coulombic efficiency of 96% after 55 cycles.

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Yang, Q., Lu, F., Liu, Y., Zhang, Y., Wang, X., Pang, Y., & Zheng, S. (2021). Li2(Bh4)(nh2) nanoconfined in sba-15 as solid-state electrolyte for lithium batteries. Nanomaterials, 11(4). https://doi.org/10.3390/nano11040946

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