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Li2(BH4)(NH2) Nanoconfined in SBA-15 as Solid-State Electrolyte for Lithium Batteries.

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.

SUBMITTER: Yang Q

PROVIDER: S-EPMC8068180 | biostudies-literature | 2021 Apr

REPOSITORIES: biostudies-literature

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Li2(BH4)(NH2) Nanoconfined in SBA-15 as Solid-State Electrolyte for Lithium Batteries.

Yang Qianyi Q Lu Fuqiang F Liu Yulin Y Zhang Yijie Y Wang Xiujuan X Pang Yuepeng Y Zheng Shiyou S

Nanomaterials (Basel, Switzerland) 20210408 4

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 stabilit ...[more]

PMID: 33917809

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