Electrochemical Analysis of Li4Ti5O12 Electrode in All-Solid-State Lithium Secondary Batteries
Electrochemical Analysis of Li4Ti5O12 Electrode in All-Solid-State Lithium Secondary Batteries
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DOI：
10.1149/1.3033388
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发表时间：
2009-02
影响因子：
3.9
通讯作者：
Hirokazu Kitaura;A. Hayashi;K. Tadanaga;M. Tatsumisago
中科院分区：
文献类型：
--
作者：
Hirokazu Kitaura;A. Hayashi;K. Tadanaga;M. Tatsumisago
组装了使用该固体电解质的全固态电池，以研究其倍率性能和阻抗行为。此外，制造了使用溶解在碳酸亚乙酯和碳酸二乙酯中的电池以与全固态电池进行比较。在全固态电池中，在放电过程中锂插入尖晶石相期间观察到归因于锂离子从固体电解质向尖晶石相转移的电阻。结果表明，与使用液体电解质的电池相比，使用固体电解质的电池显示出更高的电阻和更大的锂离子转移活化能。在充电过程中未观察到电阻。全固态电池的平均充电电压为，在的充电电流密度和的放电电流密度下的可逆容量为。
All-solid-state cells using the solid electrolyte were assembled to investigate their rate performances and impedance behaviors. Furthermore, cells using dissolved in ethylene carbonate and diethyl carbonate were fabricated for comparison to the all-solid-state cells. In the all-solid-state cells, resistance attributable to the lithium-ion transfer from the solid electrolyte to spinel phase was observed during the lithium insertion into spinel phase during the discharge process. Results clarified that the cells using the solid electrolyte showed higher resistance and larger activation energy for this lithium-ion transfer than the cells using the liquid electrolyte. Resistance was not observed in the charge process. The all-solid-state cell showed the average charge voltage of (vs Li) and reversible capacity of at the charge current density of and the discharge current density of .