CHEMICAL SCIENCE

Chen Zuxin/Yang Lishan Review: SiOx-based anode—the next generation ideal choice for high-energy lithium-ion batteries


May 5, 2023, Associate Professor Chen Zuxin, South China Normal University, RMIT UniversityDerek HaoPh.D. with Hunan Normal UniversityYang LishanProfessor around SiOx-based anode in Tsinghua University hosted a high starting point new journalNano Research EnergyCo-published a review paper entitled “Recent advances of SiOx-based anodes for sustainable lithium-ion batteries.”

With the rapid development of electric vehicles (EVs) and portable electronic devices (PEDs), the market urgently needs to continue to develop themHigh specific volumeandLong cycle lifeof lithium-ion batteries. For the anode, the traditional graphite anode is limited by its theoretical capacity (372 mA h•g−1) and basically reaches the upper limit of its energy density, and silicon-based materials are considered to be ideal candidates for the next generation of high-energy lithium-ion batteries. In the actual development process, it was gradually found that the SiOx (0<x<2) negative electrode has something close to SiUltra-high theoretical lithium storage capacityHowever, the volume expansion in the electrode process is smaller than that of Si element, and the side reaction during the first lithiation process can also form an SEI buffer layer of LixSiO4 and Li2O. High specific capacity, good cycle stability, low cost and processing difficulty make SiOx attract the attention of industry and academia, and has become a research and development hotspot.

Figure 1.Schematic diagram of the research framework of this review. This paper mainly reviews the latest development of SiOx anodes, including material design, performance optimization and mechanism research. The main store summarizes two promising material structures, SiOx/C composite materials and porous structures, as well as development points such as binder/electrolyte additives, prelithiation, and SEI analysis.

In this review paper, the authors first describe in detail the SiOx-based anodeStructural characteristics, energy storage mechanismWith a variety ofSynthesis method。 Due to the inevitable volume expansion and electrochemical irreversibility, the first effect of the negative electrode is even as low as 50-60%, which limits the practical application of SiOx-based materials. In view of the above problems, this paper further summarizes and summarizes various optimization strategies and porous structure construction ideas of SiOx/C composites. In the second half of the paper, several of the latest modification strategies in the industry are discussed in depth: new onesAdhesiveandElectrolyte additivesuse,Pre-lithiationand other lithium-ion battery components. Among them, the design of a new adhesive can not only stabilize the integrity and electrical contact of the electrode in the electrolysis process, but also the electrolyte additive can synthesize the binder to stabilize the good transport of Li+/e− of the negative electrode through the derived SEI network, and pre-lithiation is the most effective way to solve the low first effect for commercial SiOx or Si anode. In addition, the paper also mentions the SiOx-based anodeResearch on new mechanismsSEI analytical detection methods, and SiOx related industriesDevelopment prospects。 The contents of this review can provide reference and guidance for the subsequent research and development of SiOx-based anodes.

Paper Information:

Zhang M, Liang N, Hao D, et al. Recent advances of SiOx-based anodes for sustainable lithium-ion batteries. Nano Research Energy, 2023, https://doi.org/10.26599/NRE.2023.912007723.9120069

DOI:10.26599/NRE.2023.9120077

Nano Research Energy is a companion journal of Nano Research, (ISSN: 2791-0091; e-ISSN: 2790-8119; Official Website: https://www.sciopen.com/journal/2790-8119Founded in June 2022, Professor Qu Liangti of Tsinghua University and Professor Chunyi Zhi of City University of Hong Kong serve as editors-in-chief.Nano Research EnergyIt is an international multidisciplinary and English-based open access journal, focusing on the cutting-edge research and application of nanomaterials and nanoscience and technology in new energy-related fields, benchmarking against top international energy journals, and committed to publishing high-level original research and review papers, which has been selected2022 China Science and Technology Journals Excellence Action Plan – High Starting Point New Journal Project。 APC fees will be waived until 2025, and teachers are welcome to submit their papers.

To submit, please contact:

NanoResearchEnergy@tup.tsinghua.edu.cn

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