Dual-doping for enhancing chemical stability of functional anionic units in sulfide for high-performance all-solid-state lithium batteries

被引：23

作者：

Yu, Peiwen ^{[1
]}

Ahmad, Niaz ^{[1
,3
]}

Yang, Jie ^{[1
]}

Zeng, Chaoyuan ^{[3
]}

Liang, Xiaoxiao ^{[3
]}

Huang, Weiming ^{[5
,6
,7
]}

Ni, Mei ^{[4
]}

Mao, Pengcheng ^{[2
]}

Yang, Wen ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Chem & Chem Engn, Beijing Key Lab Photoelect Electrophoton Convers M, Key Lab Cluster Sci,Minist Educ, Beijing 100081, Peoples R China

[2] Beijing Inst Technol, Anal & Testing Ctr, Beijing 100081, Peoples R China

[3] Hainan Univ, Sch Chem Engn & Technol, Hainan Prov Key Lab Fine Chem, Key Lab,Minist Educ Adv Mat Trop Isl Resources, Haikou 570228, Hainan, Peoples R China

[4] China Fire & Rescue Inst, Dept Basic Courses, Beijing, Peoples R China

[5] Jilin Univ, Coll Chem, Changchun 130012, Jilin, Peoples R China

[6] Jilin Univ, Key Lab Phys & Technol Adv Batteries, Minist Educ, Changchun 130012, Jilin, Peoples R China

[7] Southern Marine Sci & Engn Guangdong Lab Zhanjiang, Zhanjiang 524002, Guangdong, Peoples R China

来源：

JOURNAL OF ENERGY CHEMISTRY | 2023年 / 86卷

关键词：

Dual doping; High Li(+)conductivity; Air-stability; POS(3)(3-)functional units; Stable SE/electrode interface; ELECTROLYTES; INTERPHASES; INTERFACE; CATHODE; ANODE; LI2S;

D O I：

10.1016/j.jechem.2023.07.038

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

The sulfide-based solid-state electrolytes (SEs) reactivity toward moisture and Li-metal are huge barriers that impede their large-scale manufacturing and applications in all-solid-state lithium batteries (ASSLBs). Herein, we proposed an Al and O dual-doped strategy for Li3PS4 SE to regulate the chemical/electrochemical stability of anionic PS43- tetrahedra to mitigate structural hydrolysis and parasitic reactions at the SE/Li interface. The optimized Li3.08Al0.04P0.96S3.92O0.08 SE presents the highest sigma(Li+) of 3.27 mS cm(-1), which is similar to 6.8 times higher than the pristine Li3PS4 and excellently inhibits the structural hydrolysis for similar to 25 min @ 25% humidity at RT. DFT calculations confirmed that the enhanced chemical stability was revealed to the intrinsically stable entities, e.g., POS33- units. Moreover, Li3.08Al0.04P0.96S3.92O0.08 SE cycled stably in Li//Li symmetric cell over 1000 h @ 0.1 mA cm(-2)/0.1 mA h cm(-2), could be revealed to Li-Al alloy and Li2O at SE/Li interface impeding the growth of Li-dendrites during cycling. Resultantly, LNO@LCO/Li3.08Al0.04P0.96S3.92O0.08/Li-In cell delivered initial discharge capacities of 129.8 mA h g(-1) and 83.74% capacity retention over 300 cycles @ 0.2 C at RT. Moreover, the Li3.08Al0.04P0.96S3.92O0.08 SE presented >90% capacity retention over 200 and 300 cycles when the cell was tested with LiNi0.8Co0.15Al0.05O2 (NCA) cathode material vs. 5 and 10 mg cm(-2) @ RT.

引用

页码：382 / 390

页数：9