Gradient Structural and Compositional Design of Conductive MXene Aerogels for Stable Zn Metal Anodes

Li, Yang1,2; Pang, Zhenqian3,4; Ghani, Awais3,4; Little, Joshua M.1; Wang, Liping5; Yang, Haochen1; Zhao, Yusheng5; Chen, Po-Yen1,2

2023-11-01

10.1002/aenm.202301557

ADVANCED ENERGY MATERIALS   影响因子和分区

1614-6832

1614-6840

Aqueous rechargeable zinc-ion batteries (ZIBs) are a safe and low-cost energy storage technology. However, practical ZIB exploitation faces critical challenges in achieving stable Zn metal anodes, which suffer from hydrogen evolution reaction (HER) corrosion and Zn dendrite growth. To address these challenges, a Zn2+-induced assembly process to fabricate Ti3C2Tx MXene-reduced graphene oxide aerogels with ZnO crust layers on Zn plates (abbreviated as ZnO/MG aerogel-Zn) that serve as stable Zn metal anodes is reported. By applying a constant voltage to a Zn plate, Zn2+ is gradually released to ionically crosslink MG nanosheets. After spontaneous hydrolysis and freeze-drying, a crust layer composed of ZnO nanoparticles is in situ formed. Additionally, the gradient Zn-O/Zn-F profiles across the ZnO/MG aerogel can facilitate Zn2+ transport and collectively suppress HER, enabling fast electrochemical kinetics and dendrite-free Zn deposition. Symmetric cells with ZnO/MG aerogel-Zn electrodes present stable cycling for 1200 h at 10 mA cm(-2), and full cells achieve long lifespans at high rates (>500 cycles at 1.0 A g(-1)). Combining the advantages of an insulating protective layer and a conductive structured host, the ZnO/MG aerogel-Zn electrode with gradient structures and compositions creates synergistic advances in stable Zn metal anodes.

cation-induced assembly gradient structures and compositions Ti3C2Tx MXene aerogels zinc-ion batteries Zn metal anodes

SCI ; EI

英语

通讯

The authors acknowledge the financial support provided by the Start-Up Fund of the University of Maryland, College Park (KFS No.: 2957431 to P.-Y.C.). Fundings for this research were provided by the MOST-AFOSR Taiwan Topological and Nanostructured Material[2957821] ; University of Maryland, College Park[5284212] ; MOST-AFOSR Taiwan Topological and Nanostructured Materials Grant["MEI<^>2","2957597"] ; Grant Challenge Grant[51732005] ; Key Program of the National Natural Science Foundation of China[12302143]

Chemistry ; Energy & Fuels ; Materials Science ; Physics

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

WOS:001103554300001

WILEY-V C H VERLAG GMBH

20234615053232

Aerogels ; Anodes ; Corrosion ; Graphene ; Plates (structural components) ; Secondary batteries ; ZnO nanoparticles

Structural Members and Shapes:408.2 ; Secondary Batteries:702.1.2 ; Semiconducting Materials:712.1 ; Electron Tubes:714.1 ; Nanotechnology:761 ; Colloid Chemistry:801.3 ; Chemical Products Generally:804

2-s2.0-85176219056

Web of Science

1.Univ Maryland, Dept Chem & Biomol Engn, College Pk, MD 20740 USA
2.Univ Maryland, Maryland Robot Ctr, College Pk, MD 20742 USA
3.Zhejiang Univ, Coll Civil Engn & Architecture, Dept Architecture, Hangzhou 310027, Peoples R China
4.Zhejiang Univ, Innovat Ctr Yangtze River Delta, Smart Mat Architecture Res Lab, Jiaxing 314100, Peoples R China
5.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China

Li, Yang,Pang, Zhenqian,Ghani, Awais,et al. Gradient Structural and Compositional Design of Conductive MXene Aerogels for Stable Zn Metal Anodes[J]. ADVANCED ENERGY MATERIALS,2023,13(48).

Li, Yang.,Pang, Zhenqian.,Ghani, Awais.,Little, Joshua M..,Wang, Liping.,...&Chen, Po-Yen.(2023).Gradient Structural and Compositional Design of Conductive MXene Aerogels for Stable Zn Metal Anodes.ADVANCED ENERGY MATERIALS,13(48).

Li, Yang,et al."Gradient Structural and Compositional Design of Conductive MXene Aerogels for Stable Zn Metal Anodes".ADVANCED ENERGY MATERIALS 13.48(2023).