Selective dissolution for stabilizing solid electrolyte interphase

Selective dissolution for stabilizing solid electrolyte interphase

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Kezhen Qi^a, Shu-yuan Liu*^,^a, Ruchun Li*^,^b

Chinese Chemical Letters | 2024, 35(5) : 109460

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Chinese Chemical Letters | 2024, 35(5): 109460

• Editorial •

Selective dissolution for stabilizing solid electrolyte interphase

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Kezhen Qi^a, Shu-yuan Liu*^,^a, Ruchun Li*^,^b

Affiliations

^a College of Pharmacy, Dali University, Dali 671000, China

^b Faculty of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650500, China

Published: 2024-05-15 doi: 10.1016/j.cclet.2023.109460

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Kezhen Qi, Shu-yuan Liu, Ruchun Li. Selective dissolution for stabilizing solid electrolyte interphase[J]. Chinese Chemical Letters, 2024 , 35 (5) : 109460 - . DOI: 10.1016/j.cclet.2023.109460

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With pursuing high energy density batteries, traditional graphite anode could be unable to meet current needs [1–4]. The high-capacity anodes have attracted increasing attention, such as lithium anodes and alloy-type anodes [5–8]. Silicon anode, as a high-capacity alloy-type anode (3579 mAh/g), has attracted great attention [9]. However, due to its unique electrochemical mechanism, significant changes in volume and morphology during charge/discharge process could lead to the decrease in cycling stability [9,10]. Therefore, it is still challenging for silicon anode in tackling volume expansion and unstable interfaces.

Guo's group recently proposed a high donor number (DN) solvent-induced selective dissolution strategy to construct a stable solid electrolyte interface (SEI) for mitigating volume expansion during charge/discharge process [11]. As shown in Fig. 1a, a high-donor-number γ-butyrolactone (GBL) could selectively dissolve low-modulus components in the SEI (e.g., lithium ethylene dicarbonate (LEDC), lithium ethyl carbonate (LEC), lithium fluorophosphate (Li_xPF_yOz), and other oligomers), while high-modulus LiF and polyethylene carbonate were left. This process forms a robust SEI, labeled as selective dissolution SEI (SD-SEI), primarily composed of resilient inorganic polymer components (Fig. 1b). It could accommodate the volume changes of micrometer-sized silicon anodes for stable cycling.

The atomic force microscope (Figs. 1c-e) revealed the SD-SEI and the F-SEI with high LiF content had an average modulus of 1.5 GPa and 2.6 GPa, respectively, while the impurity-rich c-SEI has a much lower average modulus of 0.7 GPa. Compared to F-SEI and c-SEI, the selective dissolution of GBL helped SEI to exhibit optimized mechanical parameters (Fig. 1f, e.g., elastic strain limit, deformation suppression capability). As illustrated in Fig. 1g, the SD-SEI anchored by tough LiF and connected by elastic polyethylene carbonate could well buffer volume changes for enhancing battery stability. In addition, they also studied the relationship between establishing DN and loop stability (Fig. 1h). Due to the selective dissolution effect, stable cycling of silicon-based anodes can be achieved when using high DN solvents in the electrolyte.

In conclusion, Guo's work improved the cycling stability of micron-scale silicon anode by selectively dissolving unfavorable components within the SEI using a high DN solvents. The work not only addressed the challenge of significant volume changes in silicon-based anodes, but also revealed the relationship between the physicochemical properties of solvents and electrochemical performance.

References

Less

[1]

H.M. Wu, P.B. Gao, J.L. Mu, et al., Chin. Chem. Lett. 33 (2022) 3236–3240.

[2]

Y. Cai, Q. Jin, K.X. Zhao, X.Z. Ma, X.T. Zhang, Chin. Chem. Lett. 33 (2022) 457–461.

[3]

H.Y. Chen, M.X. Li, C.P. Li, et al., Chin. Chem. Lett. 33 (2022) 141–152.

[4]

S.J. Yang, X. Shen, X.B. Cheng, et al., J. Energy Chem. 69 (2022) 70–75.

[5]

Z.P. Li, L.H. Sun, L.P. Zhai, et al., Angew. Chem. Int. Ed. 62 (2023) e202307459.

[6]

Q. Li, J.F. Ruan, S.T. Weng, et al., Angew. Chem. Int. Ed. 62 (2023) e202310297.

[7]

Z.P. Wang, S.Y. Xie, X.J. Gao, et al., Chin. Chem. Lett. 34 (2023) 108151.

[8]

X.H. Liu, X.J. Qian, W.Q. Tang, et al., J. Energy Chem. 52 (2021) 385–392.

[9]

J. Chen, X. Fan, Q. Li, et al., Nat. Energy 5 (2020) 386.

[10]

H. Jia, L. Zou, P. Gao, et al., Adv. Energy Mater. 9 (2019) 1900784.

[11]

Y.F. Tian, S.J. Tan, C. Yang, et al., Nat. Commun. 14 (2023) 7247.

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Year 2024 volume 35 Issue 5

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Article Info

doi: 10.1016/j.cclet.2023.109460

Receive Date：2023-11-29
Online Date：2025-11-21
Published：2024-05-15

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Received：2023-11-29
Revised：2023-12-16
Accepted：2023-12-26

Affiliations

^a College of Pharmacy, Dali University, Dali 671000, China

^b Faculty of Chemistry and Chemical Engineering, Yunnan Normal University, Kunming 650500, China

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表12种不同金属材料的力学参数

科 Family	属数 Number of genus	种数 Number of species	占总种数比例 Percentage of total species (%)	属 Genus	种数 Number of species	占总种数比例 Percentage of total species (%)
鹅膏菌科Amanitaceae	2	11	5.26	鹅膏菌属 Amanita	10	4.78
小菇科 Mycenaceae	2	12	5.74	丝盖伞属 Inocybe	5	2.39
多孔菌科 Polyporaceae	8	14	6.70	蜡蘑属 Laccaria	5	2.39
红菇科 Russulaceae	3	23	11.00	小皮伞属 Marasmius	6	2.87
				小菇属 Mycena	11	5.26
				光柄菇属 Pluteus	5	2.39
				红菇属 Russula	17	8.13
				栓菌属 Trametes	5	2.39

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