DataVXACS Energy LettersPaper
journal article·2024-01-12

Poloxamer Pre-solvation Sheath Ion Encapsulation Strategy for Zinc Anode–Electrolyte Interfaces

Kai Yang, Hao Fu, Yixue Duan, Zhihao Ma, Dong Wang, Bolong Li, Ho Seok Park, Derek Ho

ACS Energy Letters· Volume 9· Issue 1
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Source abstract

Abstract

Aqueous metal-ion batteries are considered next-generation energy storage devices with improved safety. However, they suffer from sluggish kinetics and side reactions. This work presents a zinc-ion encapsulation strategy based on the poloxamer pre-solvation sheath for the realization of efficient zinc anode–electrolyte interfaces. The poloxamers can reversibly self-assemble into a pre-solvation sheath by electron-donating effect and effectively shield the ions from the surrounding water. This also lowers the activation energy of desolvation, endowing promoted transference and reaction kinetics. Accordingly, the Zn||Zn cell with the poloxamer electrolyte (Polo-ZnSO 4 ) achieved over 2000 h cycles at 5 mA cm –2 and even over 500 h cycles at 10 mA cm –2 . The Zn||MnO 2 battery delivers a high and stable capacity of 240.9 mAh g –1 after 1000 cycles at 1 A g –1 . This work paves the way for use of encapsulation chemistry for advanced aqueous metal batteries with high Coulombic efficiency and long lifetime.
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Research context

Energy storage

OpenAlex topics: Advanced battery technologies research · Advanced Battery Materials and Technologies · Electrocatalysts for Energy Conversion

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Materials Science and Engineering, City University of Hong Kong, Kowloon 999077, Hong Kong China

School of Chemical Engineering, Sungkyunkwan University (SKKU), 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Republic of Korea

State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China

SKKU Institute of Energy Science and Technology (SIEST), Sungkyunkwan University (SKKU), 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Republic of Korea

SKKU Advanced Institute of Nano Technology (SAINT), Sungkyunkwan University (SKKU), 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Republic of Korea

Department of Health Sciences and Technology, Samsung Advanced Institute for Health Sciences and Technology (SAIHST), Sungkyunkwan University (SKKU), 2066, Seobu-ro, Jangan-gu, Suwon, Gyeonggi-do 16419, Republic of Korea

Hong Kong Centre for Cerebro-cardiovascular Health Engineering, Hong Kong Science Park 999077, Hong Kong China

Funding

National Research Foundation of Korea · Innovation and Technology Commission · City University of Hong Kong

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