A Low-Dosage Flame-Retardant Inorganic Polymer Binder for High-Energy-Density and High-Safety Lithium-Sulfur Batteries

Chen, Zhuzuan1,2; Chen, Tingjie1; Wang, Junwen1; Li, Pengxian3; Liu, Ju2; Chen, Wenyan4; Yang, Zhuohong2; Deng, Yonghong4; Chang, Jian3,4; Yang, Yu1,2

2024-06-01

10.1002/aenm.202401568

ADVANCED ENERGY MATERIALS   影响因子和分区

1614-6832

1614-6840

The developing electric vehicles and portable electronics urgently require rechargeable lithium batteries with high energy density and high safety. Lithium-sulfur (Li-S) batteries have shown significant advantages in their high energy density. However, the use of traditional polymer binders faces significant challenges, such as soluble polysulfides, large volume changes, and electrode flammability, resulting in performance degradation and safety hazards. Here, a polymeric aluminophosphate (AP) is for the first time proposed as an inorganic polymer binder to simultaneously realize high energy density, long cycling stability, and reliable safety of Li-S batteries. Benefiting from the synergistic effect of polar P-O and Al-O chain segments, the AP binder provides strong mechanical adhesion, anchors polysulfides, and promotes the redox kinetics of sulfur electrodes. The AP binder also ensures high flame retardancy for sulfur electrodes at an extremely low dosage of 2 wt%. Consequently, the retardant sulfur electrode can be operated stably with high specific capacities (1190 mAh g(-1)), high capacity retention rates (>99.1%) during 500 cycles, and excellent rate capability (3 C). Based on the entire cell, the soft-packaged Li-S full battery provides high capacities (3.6 mAh cm(-2)), high cell energy density (415 Wh kg(-1) and 297 Wh L-1), and high capacity retention rates (>99.8%).

aluminophosphate lithium-sulfur batteries polymer binders polysulfide shuttle sulfur cathodes

SCI ; EI

英语

通讯

Guangdong Basic and Applied Basic Research Foundation[2022A1515011005] ; Science and Technology Planning Project of Guangdong Province[2021A0505110001] ; Shenzhen Science and Technology Innovation Program[JCYJ20220818100218040] ; Key Laboratory of Polymer Materials and Products of Universities in Fujian[KF-C21007] ; Science and Technology Program of Fujian Province[2021N3003] ; null[22109066] ; null[22371116] ; null[52303035]

Chemistry ; Energy & Fuels ; Materials Science ; Physics

Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:001242648200001

WILEY-V C H VERLAG GMBH

Web of Science

1.Fujian Univ Technol, Coll Mat Sci & Engn, Key Lab Polymer Mat & Prod Univ Fujian, Fuzhou 350118, Peoples R China
2.South China Agr Univ, Coll Mat & Energy, Key Lab Biobased Mat & Energy, Minist Educ, Guangzhou 510642, Peoples R China
3.Great Bay Univ, Sch Phys Sci, Dongguan Key Lab Interdisciplinary Sci Adv Mat & L, Dongguan 523000, Guangdong, Peoples R China
4.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Sch Innovat & Entrepreneurship, Key Univ Lab Highly Efficient Utilizat Solar Energ, Shenzhen 518055, Peoples R China

Chen, Zhuzuan,Chen, Tingjie,Wang, Junwen,et al. A Low-Dosage Flame-Retardant Inorganic Polymer Binder for High-Energy-Density and High-Safety Lithium-Sulfur Batteries[J]. ADVANCED ENERGY MATERIALS,2024.

Chen, Zhuzuan.,Chen, Tingjie.,Wang, Junwen.,Li, Pengxian.,Liu, Ju.,...&Yang, Yu.(2024).A Low-Dosage Flame-Retardant Inorganic Polymer Binder for High-Energy-Density and High-Safety Lithium-Sulfur Batteries.ADVANCED ENERGY MATERIALS.

Chen, Zhuzuan,et al."A Low-Dosage Flame-Retardant Inorganic Polymer Binder for High-Energy-Density and High-Safety Lithium-Sulfur Batteries".ADVANCED ENERGY MATERIALS (2024).