Regulating Inorganic and Organic Components to Build Amorphous-ZnFx Enriched Solid-Electrolyte Interphase for Highly Reversible Zn Metal Chemistry

Liang，Guojin1; Tang，Zijie2; Han，Bing3; Zhu，Jiaxiong1; Chen，Ao1; Li，Qing1; Chen，Ze1; Huang，Zhaodong1,4; Li，Xinliang1; Yang，Qi5; Zhi，Chunyi1,4,6,7

2023

10.1002/adma.202210051

Advanced Materials   Impact Factor & Quartile

0935-9648

1521-4095

The introduction of inorganic crystallites into a solid–electrolyte interphase (SEI) is an effective strategy for improving the reversibility of the Zn metal anode (ZMA). However, the structure–performance relationship of the SEI is not fully understood because the existing forms of its inorganic and organic components in their pristine states are not resolved. Here, a highly effective SEI is constructed for ZMA using a bisolvent electrolyte and resolved its composition/structure by cryogenic transmission electron microscopy. This highly fluorinated SEI with amorphous inorganic ZnF uniformly distributed in the organic matrix is largely different from the common mosaic and multilayer SEIs with crystalline inorganics. It features improved structural integrity, mechanical toughness, and Zn ion conductivity. Consequently, the ZMA exhibits excellent reversibility with an enhanced plating/stripping Coulombic efficiency of 99.8%. The ZMA-based full cell achieves a high Zn utilization ratio of 54% at a practical areal capacity of 3.2 mAh cm and stable cycling over 1800 h during which the accumulated capacity reached 5600 mAh cm. This research highlights the detailed structure and composition of amorphous SEIs for highly reversible metal anodes.

amorphous SEI for Zn metal anode cryo-TEM analysis electrolyte engineering organic and inorganic components in SEI reversibility of Zn anode

SCI

English

NI Journal Papers

Corresponding

CRF[C1002-21G] ; null[CityU 11314822] ; null[CityU PDFS2122- 1S05]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter

WOS:000960519200001

WILEY-V C H VERLAG GMBH

MATERIALS SCIENCE

2-s2.0-85151322453

Scopus

1.Department of Materials Science and Engineering,City University of Hong Kong,83 Tat Chee Avenue, Kowloon,999077,Hong Kong
2.Songshan Lake Materials Laboratory,Dongguan,Guangdong,523808,China
3.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
4.Hong Kong Center for Cerebro-Cardiovascular Health Engineering,999077,Hong Kong
5.State Key Laboratory of Chemical Resource Engineering,Beijing University of Chemical Technology,Beijing,100029,China
6.Hong Kong Institute for Advanced Study,City University of Hong Kong,Kowloon,999077,Hong Kong
7.Hong Kong Institute for Clean Energy,City University of Hong Kong,Kowloon,999077,Hong Kong

Liang，Guojin,Tang，Zijie,Han，Bing,et al. Regulating Inorganic and Organic Components to Build Amorphous-ZnFx Enriched Solid-Electrolyte Interphase for Highly Reversible Zn Metal Chemistry[J]. Advanced Materials,2023.

Liang，Guojin.,Tang，Zijie.,Han，Bing.,Zhu，Jiaxiong.,Chen，Ao.,...&Zhi，Chunyi.(2023).Regulating Inorganic and Organic Components to Build Amorphous-ZnFx Enriched Solid-Electrolyte Interphase for Highly Reversible Zn Metal Chemistry.Advanced Materials.

Liang，Guojin,et al."Regulating Inorganic and Organic Components to Build Amorphous-ZnFx Enriched Solid-Electrolyte Interphase for Highly Reversible Zn Metal Chemistry".Advanced Materials (2023).