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Ultrarapid Nanomanufacturing of High-Quality Bimetallic Anode Library toward Stable Potassium-Ion Storage |
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| Authors: | Shuming Dou Jie Xu Danfeng Zhang Wen Liu Cuihua Zeng Jiangchao Zhang Zhedong Liu Haoqiang Wang Yani Liu Yu Wang Yanbing He Wei-Di Liu Wei Gan Yanan Chen Qunhui Yuan |
| Institution: | 1. Shenzhen Key Laboratory of Flexible Printed Electronics Technology, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055 China
School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics, Machining Technology of Ministry of Education, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin, 300072 China;2. School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics, Machining Technology of Ministry of Education, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin, 300072 China State Key Laboratory of Mechanical Transmission, College of Materials Science and Engineering, Chongqing University, Chongqing, 400044 China;3. Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055 China;4. School of Materials Science and Engineering, Key Laboratory of Advanced Ceramics, Machining Technology of Ministry of Education, Tianjin Key Laboratory of Composite and Functional Materials, Tianjin University, Tianjin, 300072 China;5. Shenzhen Key Laboratory of Flexible Printed Electronics Technology, School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055 China;6. Australian institute of Bioengineering and Nanotechnology, The University of Queensland, St. Lucia, Brisbane, Queensland, 4072 Australia;7. Shenzhen Key Laboratory of Flexible Printed Electronics Technology, School of Science, Harbin Institute of Technology (Shenzhen), Shenzhen, 518055 China |
| Abstract: | Bimetallic alloy nanomaterials are promising anode materials for potassium-ion batteries (KIBs) due to their high electrochemical performance. The most well-adopted fabrication method for bimetallic alloy nanomaterials is tube furnace annealing (TFA) synthesis, which can hardly satisfy the trade-off among granularity, dispersity and grain coarsening due to mutual constraints. Herein, we report a facile, scalable and ultrafast high-temperature radiation (HTR) method for the fabrication of a library of ultrafine bimetallic alloys with narrow size distribution (≈10–20 nm), uniform dispersion and high loading. The metal-anchor containing heteroatoms (i.e., O and N), ultrarapid heating/cooling rate (≈103 K s−1) and super-short heating duration (several seconds) synergistically contribute to the successful synthesis of small-sized alloy anodes. As a proof-of-concept demonstration, the as-prepared BiSb-HTR anode shows ultrahigh stability indicated by negligible degradation after 800 cycles. The in situ X-ray diffraction reveals the K+ storage mechanism of BiSb-HTR. This study can shed light on the new, rapid and scalable nanomanufacturing of high-quality bimetallic alloys toward extended applications of energy storage, energy conversion and electrocatalysis. |
| Keywords: | Bimetallic Alloy High-Temperature Radiation In Situ X-Ray Diffraction Nanomanufacturing Potassium-Ion Batteries |