Design of Low-Stress robust silicon and Silicon-Carbide anode with high areal capacity and high energy density for Next-Generation Lithium-Ion batteries

IF 13.3 1区 工程技术 Q1 ENGINEERING, CHEMICAL
Manoj Gautam , Govind Kumar Mishra , Mohammad Furquan , K. Bhawana , Dhruv Kumar , Sagar Mitra
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Abstract

Utilization of biomass-converted products in the energy industry is a pathway to sustain the demand of high energy lithium cells, and silicon anode could be a solution before the lithium metal. The high percentage of silicon (>10 wt%) in the anode for capacity gain can’t prevent crack generation during cycling and results in capacity fading and cell failure. Here, we present a unique anode structure like an in-situ nano-layer of carbon-coated silicon–silicon carbide (Si-SiC@C) from black rice husk ash (BRHA)-biomass. A specific proportion of the “SiC” phase in Si-SiC@C plays a crucial role in the formation of a stable interface, passivation of the Si surface, and suppression of Si cracking, resulting in improved battery cycling performance. Furthermore, the distribution of relaxation times (DRT) experiment was carried out in MATLAB software to more understand the interface mechanism. Nano-indentation and Von-mises stress generation method was used to analyze the mechanical properties of samples. The ‘Si’ and ‘SiC’ phases were distinguished by X-ray Diffraction (XRD) and are thoroughly analyzed via the advanced characterization tools (i.e., FETEM, c-AFM, XPS, etc.). The optimized Si-SiC@C composition showed excellent cyclic stability up to 700 cycles with an areal capacity of ∼2.3 mAh cm−2 at a rate of 0.2 A g−1 vs. Li/Li+. Moreover, a pouch cell is fabricated with the Si-SiC@C (i.e., ∼3.8 mg cm−2) as anode and NMC811 as cathode (∼11.5 mg cm−2). The developed 300 mAh pouch cell performed excellently (>85 % capacity retention) over 200 cycles. In light of easy and energy-efficient synthesis, robustness, and cyclic stability, the specially designed Si-SiC@C from BRHA can be a promising choice as the next-generation anode material for rechargeable battery applications, particularly for lithium-ion batteries.

Abstract Image

新一代锂离子电池低应力、高面积容量、高能量密度硅和碳化硅阳极的设计
在能源工业中利用生物质转化产品是维持高能量锂电池需求的途径,而硅阳极可能是锂金属之前的解决方案。为了获得容量,阳极中硅的高比例(>10 wt%)不能防止循环过程中产生裂纹,并导致容量衰减和电池失效。在这里,我们提出了一种独特的阳极结构,类似于由黑稻壳灰(BRHA)-生物质制成的原位碳涂层硅-碳化物纳米层(Si-SiC@C)。Si-SiC@C中特定比例的“SiC”相对于形成稳定的界面,钝化Si表面,抑制Si裂纹,从而提高电池循环性能起着至关重要的作用。此外,在MATLAB软件中进行了松弛时间分布(DRT)实验,以进一步了解界面机理。采用纳米压痕法和Von-mises应力生成法分析了样品的力学性能。通过x射线衍射(XRD)对“Si”和“SiC”相进行了区分,并通过先进的表征工具(即FETEM, c-AFM, XPS等)进行了深入分析。与Li/Li+相比,优化后的Si-SiC@C组合物在0.2 a g−1的倍率下具有优异的循环稳定性,高达700次循环,面积容量为~ 2.3 mAh cm−2。此外,以Si-SiC@C(即~ 3.8 mg cm−2)为阳极,NMC811为阴极(~ 11.5 mg cm−2)制备了袋状电池。开发的300毫安时袋电池在200次循环中表现出色(> 85%容量保留)。由于合成简单、节能、坚固、循环稳定,BRHA特别设计的Si-SiC@C可以作为可充电电池应用的下一代负极材料,特别是锂离子电池。
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来源期刊
Chemical Engineering Journal
Chemical Engineering Journal 工程技术-工程:化工
CiteScore
21.70
自引率
9.30%
发文量
6781
审稿时长
2.4 months
期刊介绍: The Chemical Engineering Journal is an international research journal that invites contributions of original and novel fundamental research. It aims to provide an international platform for presenting original fundamental research, interpretative reviews, and discussions on new developments in chemical engineering. The journal welcomes papers that describe novel theory and its practical application, as well as those that demonstrate the transfer of techniques from other disciplines. It also welcomes reports on carefully conducted experimental work that is soundly interpreted. The main focus of the journal is on original and rigorous research results that have broad significance. The Catalysis section within the Chemical Engineering Journal focuses specifically on Experimental and Theoretical studies in the fields of heterogeneous catalysis, molecular catalysis, and biocatalysis. These studies have industrial impact on various sectors such as chemicals, energy, materials, foods, healthcare, and environmental protection.
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