Succinic anhydride as a deposition-regulating additive for dendrite-free lithium metal anodes

Xie, Yuxiang; Huang, Yixin; Wu, Xiaoqing; Shi, Chen-Gung; Wu, Lina; Song, Cun Yi; Fan, Jie; Dai, Peng; Huang, Ling; Ye, Hua; Wang, Chongtai; Wei, Yimin; Sun, Shi‐Gang

doi:10.1039/d1ta04043j

Cited by 32 publications

(30 citation statements)

References 26 publications

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“…LiF is beneficial for Li + transfer, which can enlarge the stiffness of SEI film. On the other hand, the stiff SEI can inhibit the growth of lithium dendrite, while Li x PO y F z is beneficial to improve the toughness of SEI. , In the P2p spectrum, after cycling in the modified electrolyte, the P–O bond on the surface of lithium metal increases. It is known from previous studies that the P–O compound can also promote the transport of Li + , improve the toughness of SEI, and inhibit the reaction between the electrolyte and lithium metal anode …”

Section: Resultsmentioning

confidence: 99%

High-Safety and Dendrite-Free Lithium Metal Batteries Enabled by Building a Stable Interface in a Nonflammable Medium-Concentration Phosphate Electrolyte

Zhang

Wei

et al. 2021

ACS Appl. Mater. Interfaces

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Lithium metal anodes are promising for their high energy density and low working potential. However, high reactivity and dendrite growth of lithium metal lead to serious safety issues. Lithium dendrite may form "dead lithium" or pierce the separator, which will cause low efficiency and short-circuit inside the battery. A nonflammable phosphate-based electrolyte can effectively solve the flammability problem. Also, it shows poor compatibility with lithium metal anodes, resulting in an unstable solid electrolyte interface (SEI), which leads to dendrite growth and poor electrochemical performance. In this study, trimethyl phosphate is used to ensure the safety of lithium metal batteries. By adjusting the concentration of lithium salt and introducing fluoroethylene carbonate, a stable SEI layer is formed on the surface of the lithium metal anode and dendrite growth of the lithium metal anode is inhibited. Lithium metal batteries with a modified electrolyte achieved stable electrochemical plating/stripping, and the full cell has 93.4% capacity left and the coulombic efficiency is nearly 100%. In addition, the modified electrolyte can also enable reversible intercalation and de-intercalation of Li + in the commercial graphite anode. This work may provide an alternative direction for the development of lithium metal batteries with high safety and high energy density.

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Section: Resultsmentioning

confidence: 99%

High-Safety and Dendrite-Free Lithium Metal Batteries Enabled by Building a Stable Interface in a Nonflammable Medium-Concentration Phosphate Electrolyte

Zhang

Wei

et al. 2021

ACS Appl. Mater. Interfaces

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“…As an economic measure, it has received extensive research interest 23,124–126 . The introduced additives participated in the solvation structure of Li + , along with the migration of Li + to the electrode surface to build CEI/SEI jointly, reducing the Li + transmission impedance, increasing the migration number of Li + , improving the ionic conductivity and stability of SEI; or change the local solvation structure and interaction between solvents and Li + , affecting the deposition potential to improve the Li + de‐solvation process 22,60,127–130 . Li nitrate (LiNO 3 ) has been proven to be an effective additive for Li‐S batteries, which can inhibit the shuttling of polysulfides and regulate the deposition behavior of Li simultaneously 131,132 .…”

Section: Additive Regulationmentioning

confidence: 99%

“…23,[124][125][126] The introduced additives participated in the solvation structure of Li + , along with the migration of Li + to the electrode surface to build CEI/SEI jointly, reducing the Li + transmission impedance, increasing the migration number of Li + , improving the ionic conductivity and stability of SEI; or change the local solvation structure and interaction between solvents and Li + , affecting the deposition potential to improve the Li + de-solvation process. 22,60,[127][128][129][130] Li nitrate (LiNO 3 ) has been proven to be an effective additive for Li-S batteries, which can inhibit the shuttling of polysulfides and regulate the deposition behavior of Li simultaneously. 131,132 It can modulate Li + solvation structure and stabilize Li-metal anodes by forming N-containing SEI on its surface (Figure 11A,B), whereas the extremely low solubility of LiNO 3 in carbonate-based electrolytes limited its application.…”

Section: Additive Regulationmentioning

confidence: 99%

Structural regulation chemistry of lithium ion solvation for lithium batteries

Wang

et al. 2022

EcoMat

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The performance of Li batteries is influenced by the Li+ solvation structure, which can be precisely adjusted by the components of the electrolytes. In this review, we overview the strategies for optimizing electrolyte solvation structures from three different perspectives, including anion regulation, binding energy regulation, and additive regulation. These strategies can optimize the composition of the electrode‐electrolyte interface, enhance the anti‐oxidative stability of electrolytes as well as regulate the behaviors of anions, solvents, and Li+ during the cycling process. Moreover, we also provide our insights into these aspects as well as present perspectives on high‐performance Li batteries.

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“…Sun et al. investigated an inexpensive and straightforward succinic anhydride (SA) molecule to improve the CE of Li plating and stripping in Figures 2(a and b) [24] . The strong binding energy of Li + with SA molecule (−0.77 eV) changes the solvated structure of Li + and increases the deposition energy barrier of Li + , resulting in a higher overpotential for Li electrodeposition.…”

Section: Binding Energy Constructing Low‐solvation Structurementioning

confidence: 99%

“… a) Timeline of the solvation theory and LHCEs system [7–24] . b) Overview of the factors of low‐solvation structure including the binding energy, activation energy, solvation/de‐solvation process, structure of novel solvents, and selection of Li salts.…”

Section: Introductionmentioning

confidence: 99%

Constructing Low‐Solvation Electrolytes for Next‐Generation Lithium‐Ion Batteries

Liu

Yuan

Dong

et al. 2022

Batteries & Supercaps

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The realization of high‐concentration electrolytes (HCEs) is a benchmark breakthrough attributed to the modification of cation aggregation, which owns technical advantages over the widely used conventional electrolytes. Due to the high cost brought by the large amount of lithium (Li) salts, high viscosity, low Li+ conductivity, and wettability of the HCE system, the concept of localized HCEs (LHCEs) is proposed to improve the aforementioned shortcomings without affecting the performances of high‐energy‐density batteries. Nevertheless, the effect factors of the weakly solvated structure of LHCEs have not been summarized, so it is urgent to conclude this direction to further survey the low‐solvation structure and properties. Hence, for the first time we offer a comprehensive and distinct overview on the electrolyte development, strategies for constructing low‐solvation structure, and scientific perspectives for lithium‐ion batteries, especially by focusing on the binding energies between cation and solvents, solvation and de‐solvation process, structure of novel solvents, and selection of Li salts. Emphasis is placed on the relevance of constructing low‐solvation structure and forming electrode/electrolyte interphases, and new insights into weakly solvated electrolytes associated with efficient solid electrolyte interphase and cathode electrolyte interphase layers are presented for developing next‐generation lithium‐ion batteries.

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Succinic anhydride as a deposition-regulating additive for dendrite-free lithium metal anodes

Abstract: Li metal is a promising anode material for next-generation energy storage systems owing to its high theoretical capacity and low potential. However, uncontrollable Li dendrite growth during Li plating and...

Cited by 32 publications

References 26 publications

High-Safety and Dendrite-Free Lithium Metal Batteries Enabled by Building a Stable Interface in a Nonflammable Medium-Concentration Phosphate Electrolyte

High-Safety and Dendrite-Free Lithium Metal Batteries Enabled by Building a Stable Interface in a Nonflammable Medium-Concentration Phosphate Electrolyte

Structural regulation chemistry of lithium ion solvation for lithium batteries

Constructing Low‐Solvation Electrolytes for Next‐Generation Lithium‐Ion Batteries

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