Silicon oxycarbide-tin nanocomposite derived from a UV crosslinked single source preceramic precursor as high-performance anode materials for Li-ion batteries

被引：10

作者：

Knozowski, Dominik ^{[1
]}

Sasikumar, Pradeep Vallachira Warriam ^{[2
]}

Dubey, Romain ^{[3
,4
]}

Aebli, Marcel ^{[3
,4
]}

Kravchyk, Kostiantyn, V ^{[3
,4
]}

Trykowski, Grzegorz ^{[5
]}

Kovalenko, Maksym, V ^{[3
,4
]}

Graule, Thomas ^{[2
]}

Wilamowska-Zawlocka, Monika ^{[1
]}

Blugan, Gurdial ^{[2
]}

机构：

[1] Gdansk Univ Technol, Fac Chem, Dept Energy Convers & Storage, Narutowicza 11-12, PL-80233 Gdansk, Poland

[2] Empa, Swiss Fed Labs Mat Sci & Technol, Lab High Performance Ceram, CH-8600 Dubendorf, Switzerland

[3] Swiss Fed Inst Technol, Lab Inorgan Chem, Dept Chem & Appl Biosci, CH-8093 Zurich, Switzerland

[4] Empa, Swiss Fed Labs Mat Sci & Technol, Lab Thin Films & Photovolta, CH-8600 Dubendorf, Switzerland

[5] Nicolaus Copernicus Univ Torun, Fac Chem, PL-87100 Torun, Poland

来源：

APPLIED MATERIALS TODAY | 2022年 / 27卷

基金：

欧盟地平线“2020”;

关键词：

Li-ion battery; Nanoparticles; Photochemistry; Silicon oxycarbide; Tin; ELECTRON-ENERGY-LOSS; RICH SIOC ANODES; COMPOSITE ANODES; LITHIUM STORAGE; ELECTROCHEMICAL PERFORMANCE; PYROLYSIS ATMOSPHERE; NEGATIVE ELECTRODES; C COMPOSITE; SN; CONDUCTIVITY;

D O I：

10.1016/j.apmt.2022.101424

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, we report an innovative and facile UV light-assisted synthesis of a nanocomposite based on silicon oxycarbide (SiOC) and tin nanoparticles. SiOC ceramic matrix, containing a conductive free carbon phase, participates in lithium-ion storage, and buffers the volume changes of Li-alloying/de-alloying material. The reported synthesis procedure through a polymer-derived ceramic route involves the preparation of a single-source precursor by UV crosslinking of a preceramic polymer in the presence of a tin precursor. Pyrolysis of this starting precursor at 1000 degrees C leads to a homogenous distribution of tin nanoparticles (25-35 nm) within the SiOC ceramic matrix, which is crucial for electrochemical stability of the material. SiOC/Sn nanocomposite tested as an anode for Li-ion battery exhibits high reversible capacity values (603 mAh g(-1) at the current density of 74.4 mA g(-1)), outstanding rate capability (524 mAh g(-1) at 2232 mA g(-1)), and superior stability (494 mAh g(-1) after 250 charge/discharge cycles). (C) 2022 Elsevier Ltd. All rights reserved.

引用

页数：10

共 76 条

[21] ELECTRON-ENERGY-LOSS STUDY OF THE OXIDATION OF POLYCRYSTALLINE TIN [J].