Advancing High-Energy Solid-State Batteries with High-Entropy NASICON-type Solid Electrolytes

被引：3

作者：

Das, Asish Kumar ^{[1
]}

Gami, Pratiksha ^{[1
]}

Vasavan, Hari Narayanan ^{[1
]}

Saxena, Samriddhi ^{[1
]}

Dagar, Neha ^{[1
]}

Deswal, Sonia ^{[2
]}

Kumar, Pradeep ^{[2
]}

Kumar, Sunil ^{[1
]}

机构：

[1] Indian Inst Technol Indore, Dept Met Engn & Mat Sci, Simrol 453552, India

[2] Indian Inst Technol Mandi, Sch Phys Sci, Mandi 175005, Himachal Prades, India

来源：

ACS APPLIED ENERGY MATERIALS | 2024年 / 7卷 / 19期

关键词：

Solid electrolytes; ionic conductivity; highentropy; NASICON-type; lithium-ion; LITHIUM;

D O I：

10.1021/acsaem.4c02011

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Herein, we have developed a High-Entropy (similar to 1.52 R, calculated at M-site) lithium-stuffed NASICON-type solid electrolyte [Li1.3Sn1.7/3Zr1.7/3Ti1.7/3Al0.1Sc0.1Y0.1(PO4)(3)] with a total (grain + grain-boundary) ionic conductivity of similar to 1.42 x 10(-4) S cm(-1) (highest reported among NASICONs containing Zr-Sn-Ti) and a low activation energy of similar to 0.33 eV with a relative density of Conventionally Sintered pellet similar to 94%. Symmetric cells with a PVDF-HFP/LiTFSI buffer layer showed stable performance for 500 cycles at 0.2 mA cm(-2) without short-circuiting. Full cells with LiFePO(4 )retained similar to 99% capacity after 100 cycles at 1C, while those with NMC811 delivered similar to 140 mAh g(-1) at C/3.

引用

页码：8301 / 8307

页数：7

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