Polymer Chain-Guided Ion Transport in Aqueous Electrolytes of Zn-Ion Batteries

Wu, Yan1; Zhang, Tian1; Chen, Lina2; Zhu, Zhaohua1; Cheng, Lukuan2; Gu, Shuai3; Li, Zhiqiang3; Tong, Zhongqiu1; Li, Hui4; Li, Yifan5; Lu, Zhouguang3; Zhang, Wenjun1; Lee, Chun Sing1

2023-06-01

10.1002/aenm.202300719

ADVANCED ENERGY MATERIALS   影响因子和分区

1614-6832

1614-6840

As a promising candidate for next-generation energy storage devices, Zn metal battery excels with their good safety, high specific capacity, and economic attractiveness. However, it still suffers from a narrow electrochemical window, notorious dendrite formation, and sluggish Zn ion transfer. Aqueous electrolyte engineering has been regarded as an effective way to improve these. It is shown that by adding sodium polystyrene sulfonate (PSS) polymers into a dilute 1 m Zn(OTf)(2) aqueous electrolyte, compact water shells with stronger hydrogen bonding and more ordered structures are formed around the polymer chains. As a result, a fast transport channel to the zinc ions is provided. The PSS chains also protect the zinc electrode from directly contacting the water molecules and thus suppress water decomposition. With these merits, a Zn//Cu cell demonstrates a high coulombic efficiency of approximate to 99% after 1500 h cycling. Meanwhile, a record-high cumulative Zn plating capacity of 10 000 mA h cm(-2) is obtained using a Zn||Zn cell. In addition, the Zn//C@V2O5 full cell achieves almost 100% capacity retention after 1000 cycles. This work provides a new strategy for designing advanced electrolyte systems excelling in ion transport kinetics.

aqueous electrolytes aqueous zinc metal batteries improved ion transport kinetics sodium polystyrene sulfonate

SCI ; EI

英语

通讯

ARG-CityU Applied Research Grant[9667241] ; Basic Research Project of the Science and Technology Innovation Commission of Shenzhen[JCYJ20200109141640095]

Chemistry ; Energy & Fuels ; Materials Science ; Physics

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

WOS:001009698500001

WILEY-V C H VERLAG GMBH

20232514264293

Electrolytes ; Hydrogen bonds ; Ions ; Polystyrenes ; Secondary batteries ; Sodium ; Vanadium pentoxide ; Zinc

Zinc and Alloys:546.3 ; Alkali Metals:549.1 ; Electric Batteries and Fuel Cells:702 ; Secondary Batteries:702.1.2 ; Physical Chemistry:801.4 ; Chemical Agents and Basic Industrial Chemicals:803 ; Chemical Products Generally:804 ; Inorganic Compounds:804.2 ; Organic Polymers:815.1.1 ; Atomic and Molecular Physics:931.3

Web of Science

1.City Univ Hong Kong, Ctr Super Diamond & Adv Films COSDAF, Dept Chem, Kowloon, Tat Chee Ave, Hong Kong 999077, Peoples R China
2.Harbin Inst Technol, Sch Mat Sci & Engn, Shenzhen 518055, Peoples R China
3.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
4.Shandong Univ, Sch Mat Sci & Engn, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Peoples R China
5.Qingdao Univ Technol, Sch Environm & Municipal Engn, Qingdao 266033, Peoples R China

Wu, Yan,Zhang, Tian,Chen, Lina,et al. Polymer Chain-Guided Ion Transport in Aqueous Electrolytes of Zn-Ion Batteries[J]. ADVANCED ENERGY MATERIALS,2023,13(29).

Wu, Yan.,Zhang, Tian.,Chen, Lina.,Zhu, Zhaohua.,Cheng, Lukuan.,...&Lee, Chun Sing.(2023).Polymer Chain-Guided Ion Transport in Aqueous Electrolytes of Zn-Ion Batteries.ADVANCED ENERGY MATERIALS,13(29).

Wu, Yan,et al."Polymer Chain-Guided Ion Transport in Aqueous Electrolytes of Zn-Ion Batteries".ADVANCED ENERGY MATERIALS 13.29(2023).