Water-Based Dual-Cross-Linked Polymer Binders for High-Energy-Density Lithium-Sulfur Batteries

Yi, Huan1,2,3; Yang, Yu1,4; Lan, Tu5,6; Zhang, Tian1,6; Xiang, Shuhuai1; Tang, Tian; Zeng, Hongbo5; Wang, Chaoyang2; Cao, Yuliang3; Deng, Yonghong1

2020-07

10.1021/acsami.0c05910

ACS Applied Materials & Interfaces   影响因子和分区

1944-8244

1944-8252

High-mass-loading electrodes with long-term stability have long been a great challenge for lithium-sulfur batteries (LSBs), since the conventional binders are unable to cope with the shuttling of lithium polysulfides and the structural damage in an electrode. Here, a novel water-based polymer, polyphosphate acid cross-linked chitosan ethylamide carbamide (PACEC), is developed as a binder to construct high-energy-density sulfur cathode and flexible LSBs. With a dual-cross-linked network, the PACEC shows excellent affinity with lithium polysulfides to relieve the shuttle effect and robust mechanical properties to stabilize the electrode. The sulfur cathode based on PACEC demonstrates a high sulfur loading of 14.8 mg cm(-2), the areal initial capacity of 17.5 mAh cm(-2), and Coulombic efficiency of 99.3%, while the amount of electrolyte is strictly limited to 6 mu L mg(-1). More importantly, a robust pouch cell with an area of 6 cm(2) and only 177% oversized lithium can successfully integrate the energy density of 6.5 mAh cm(-2) with the cycling retention per cycle of 99.74% during 270 cycles and flexibility at a curvature of 3 mm. This study provides inspirations for the design of eco-friendly polymer binders and paving new ways for the development of LSBs.

polymer binder lithium-sulfur battery dual-cross-linking high mass loading cycle stability

SCI ; EI

英语

第一 ; 通讯

Key-Area Research and Development Program of Guangdong Province[2019B090908001][2020B090919001] ; Science and Technology Program of Guangzhou[202002030307] ; Guangdong Basic and Applied Basic Research Foundation[2019A1515010595][2019A1515111030] ; Shenzhen International Scientific and Technological Cooperation Grants[GJHZ20180411143536149] ; Fundamental Research Program of Shenzhen[JCYJ2018030512351278]

Science & Technology - Other Topics ; Materials Science

Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary

WOS:000546698600040

AMER CHEMICAL SOC

20202808929158

Cathodes ; Crosslinking ; Polysulfides ; Binders ; Electrolytes ; Lithium compounds ; Lithium batteries ; Loading

Materials Handling Methods:691.2 ; Electric Batteries and Fuel Cells:702 ; Primary Batteries:702.1.1 ; Secondary Batteries:702.1.2 ; Chemical Reactions:802.2 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Organic Polymers:815.1.1 ; Synthetic Rubber:818.2.1

Web of Science

1.Southern Univ Sci & Technol SUSTech, Guangdong Prov Key Lab Energy Mat Elect Power, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
2.South China Univ Technol, Res Inst Mat Sci, Guangzhou 510640, Peoples R China
3.Wuhan Univ, Coll Chem & Mol Sci, Hubei Key Lab Electrochem Power Sources, Wuhan 430072, Peoples R China
4.South China Agr Univ, Coll Mat & Energy, Minist Educ, Key Lab Biobased Mat & Energy, Guangzhou 510642, Peoples R China
5.Univ Alberta, Dept Chem & Mat Engn, Edmonton, AB T6G 1H9, Canada
6.Univ Alberta, Dept Mech Engn, Edmonton, AB T6G 1H9, Canada

Yi, Huan,Yang, Yu,Lan, Tu,et al. Water-Based Dual-Cross-Linked Polymer Binders for High-Energy-Density Lithium-Sulfur Batteries[J]. ACS Applied Materials & Interfaces,2020,12(26):29316-29323.

Yi, Huan.,Yang, Yu.,Lan, Tu.,Zhang, Tian.,Xiang, Shuhuai.,...&Deng, Yonghong.(2020).Water-Based Dual-Cross-Linked Polymer Binders for High-Energy-Density Lithium-Sulfur Batteries.ACS Applied Materials & Interfaces,12(26),29316-29323.

Yi, Huan,et al."Water-Based Dual-Cross-Linked Polymer Binders for High-Energy-Density Lithium-Sulfur Batteries".ACS Applied Materials & Interfaces 12.26(2020):29316-29323.