کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7744495 | 1498224 | 2018 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Quasi-solid-state lithium batteries using bulk-size transparent Li7La3Zr2O12 electrolytes
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A thick bulk-sized Li7La3Zr2O12 (LLZ) solid electrolyte is successfully prepared using a polymer complex method and a hot isostatic pressing (HIP) treatment. Despite the difficulties of densification, HIP-treated LLZ can be prepared as a transparent ceramic pellet because of its ~200â¯Î¼m primary grain size, and its conductivity is improved by its increased density (>99%). An all-solid-state lithium battery is fabricated by using a mixed conducting ionic liquid gel to connect the bulk-sized LLZ electrolyte and a LiFePO4 (LFP) cathode. The introduction of the mixed conducting gel layer reduces the electrode/electrolyte interface resistance. The specific discharge capacity of the active cathode material is 169â¯mAhâ¯gâ1 (current density of 0.046â¯mAâ¯cmâ2), which suggests that almost the full capacity of LFP can be utilized even under the all-solid-state cell design. The coulombic efficiency (ηc) is â1, and no side reactions are observed. The LFP/LLZ/Li cell shows a high electrochemical stability against the Li metal anode, and the cell operates for 20â¯cycles without dendrite growth causing a short circuit under a charge current density of 0.591â¯mAâ¯cmâ2 (1/2 C rate).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid State Ionics - Volume 319, June 2018, Pages 285-290
Journal: Solid State Ionics - Volume 319, June 2018, Pages 285-290
نویسندگان
Shoichi Sugata, Noriko Saito, Akio Watanabe, Ken Watanabe, Je-Deok Kim, Kan Kitagawa, Yosuke Suzuki, Itaru Honma,