DataVXAdvanced Functional MaterialsPaper
journal article·2026-01Open access

Amorphous High Entropy Alloy Nanosheets Enabling Robust Li–S Batteries

Ren He, Seungho Lee, Yang Ding, Chen Huang, Xuan Lu, Lirong Zheng, Ao Yu, Chaoyue Zhang, Canhuang Li, Xiaoyu Bi, Yaqiang Li, Yaqi Liao, Junshan Li, Ahmad Ostovari Moghaddam, Salimov Yernar, Ying Xu, Maria Ibáñez, Chaoqi Zhang, Linlin Yang, Yingtang Zhou, Andreu Cabot

Advanced Functional Materials· Volume 36· Issue 5
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Source abstract

Abstract

Abstract High‐entropy alloys (HEAs) show great potential for catalyzing complex multi‐step reactions, but optimizing their parameters, i.e., composition, but also their crystallinity and morphology, remains a significant challenge. In this study, FeCoNiMoW HEAs are synthesized into either amorphous nanosheets (HEANS) or crystalline nanoparticles (HEANP), which are then used to catalyze the lithium–sulfur (Li–S) reaction of Li–S batteries (LSBs). Evaluations in symmetric cells, coin cells, and pouch cells reveal that HEANS significantly enhance LSB performance, achieving initial discharge capacities up to 1632 mAh g −1 . The batteries also exhibit excellent cycling stability over 1000 cycles at 3Cand maintain high‐rate performance up to 10C with a capacity of 614 mAh g −1 . Comprehensive in situ analyses and density functional theory calculations demonstrate that amorphous HEANS provide more active sites, better ionic conductivity and stronger chemical interactions with lithium polysulfides (LiPS). These properties effectively suppress the shuttle effect, promote the complete S 8 → Li 2 S conversion by reducing the impedance of the solid‐electrolyte interphase, and accelerate the Li 2 S 4 → Li 2 S 2 step by lowering the nucleation energy barrier. Overall, this study highlights the superior catalytic properties of amorphous 2D HEAs in LSBs and offers new insights into the mechanisms of LiPS conversion.
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Research context

Energy storageMetals & alloysNanomaterialsCatalysis & surfaces

OpenAlex topics: Advanced Battery Materials and Technologies · MXene and MAX Phase Materials · Advancements in Battery Materials

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

Affiliations

Catalonia Institute for Energy Research – IREC Sant Adrià de Besòs Barcelona 08930 Spain

Universitat de Barcelona Barcelona 08028 Spain

Institute of Science and Technology Austria (ISTA) Am Campus 1 Klosterneuburg 3400 Austria

Hebei Key Lab of Optic‐electronic Information and Materials College of Physics Science and Technology Hebei University Baoding 071002 China

Universitat Politècnica de Catalunya Campus Diagonal Sud, Edificio PC (Pavelló C). Av. Diagonal, 647 Barcelona 08028 Spain

Institute of High Energy Physics Chinese Academy of Sciences Beijing 100049 P. R. China

Fuzhou University Fuzhou Fujian 350116 P. R. China

State Key Laboratory of Material Processing and Die and Mold Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan 430074 P. R. China

Institute of Advanced Study Chengdu University Chengdu 610106 P. R. China

Tikhonov Moscow Institute of Electronics and Mathematics HSE University Moscow 101000 Russia

Al‐Farabi Kazakh National University Faculty of Physics and Technology Department of Plasma Physics Almaty 050040 Republic of Kazakhstan

Zhejiang Key Laboratory of Petrochemical Environmental Pollution Control National Engineering Research Center for Marine Aquaculture Marine Science and Technology College Zhejiang Ocean University Zhoushan Zhejiang Province 316004 P. R. China

ICREA Pg. Lluis Companys 23 Barcelona Catalonia 08010 Spain

Funding

Generalitat de Catalunya

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