“Water-in-Salt” electrolyte enabled LiMn2O4/TiS2 Lithium-ion batteries

Sun, Wei; Suo, Liumin; Wang, Fei; Eidson, Nico; Yang, Chengliang; Han, Fudong; Ma, Zhaohui; Gao, Tao; Zhu, Min; Wang, Chunsheng

doi:10.1016/j.elecom.2017.07.016

Cited by 108 publications

(76 citation statements)

References 21 publications

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“…There were few researches on water-in-salt electrolytes for replacing the traditional organic electrolytes in Li-ion batteries to improve the safety and stability of the batteries at a lower cost. Sun et al demonstrated the use of "water-in-salt" electrolyte (21 M LiTFSI in H 2 O) with a TiS 2 anode, which displayed high electrochemical reversibility when paired with a LiMn 2 O 4 cathode [63]. Table 1 summarizes the different non-flammable electrolytes and their electrochemical performance for Li-ion batteries.…”

Section: Additives For Electrolytesmentioning

confidence: 99%

Recent Advances in Non-Flammable Electrolytes for Safer Lithium-Ion Batteries

2019

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Lithium-ion batteries are the most commonly used source of power for modern electronic devices. However, their safety became a topic of concern after reports of the devices catching fire due to battery failure. Making safer batteries is of utmost importance, and several researchers are trying to modify various aspects in the battery to make it safer without affecting the performance of the battery. Electrolytes are one of the most important parts of the battery since they are responsible for the conduction of ions between the electrodes. In this paper, we discuss the different non-flammable electrolytes that were developed recently for safer lithium-ion battery applications.

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Section: Additives For Electrolytesmentioning

confidence: 99%

Recent Advances in Non-Flammable Electrolytes for Safer Lithium-Ion Batteries

2019

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“…For example, such voltage value is well stable in "Water-in-Salt" (WIS) electrolyte. Suo et al [129] use TiS 2 as anode in WIS to pair with LiMnO 2 cathode. The result showed that the LiMnO 2 /TiS 2 full cell could deliver energy density of 78 Wh kg −1 at a high discharge voltage of 1.7 V, revealing the possibility of using TiS 2 in WIS electrolyte LIB.…”

Section: Other Metal Sulfidesmentioning

confidence: 99%

The application of nanostructured transition metal sulfides as anodes for lithium ion batteries

Zhao¹,

Zhou²,

Wang³

et al. 2018

Journal of Energy Chemistry

243

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“…The operating voltage of most of the ARLBs fabricated in the subsequent reports was way below the 3 V possible. [84] Copyright 2017, Elsevier. [93] Although the maximum operating voltage was named 2.1 V, it was indeed a supercapacitor with a cell voltage The redox potential ranges of TiS 2 and LiMn 2 O 4 electrodes are also labeled on the graph.…”

Section: Water-in-saltmentioning

confidence: 99%

High‐Energy Aqueous Lithium Batteries

Eftekhari¹

2018

Advanced Energy Materials

157

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research, aqueous electrolytes were occasionally employed for the investigation of cathode materials instead of the conventional nonaqueous electrolytes. [9,10] It was discussed that the simplicity of an aqueous electrolyte provides a better opportunity for the fundamental studies of the process of intercalation/deintercalation of Li-ions as opposed to the nonaqueous electrolytes. For instance, although the formation of solid electrolyte interphase (SEI) is of utmost importance for the cyclability of LIB, the significant role of the electrolyte does not allow to exclusively study the electrochemical behavior of the electrode material under consideration. The current research has specifically targeted the development of ARLBs, but in practice, most of the recent papers have followed the same line of research in investigating a limited range of cathode and anode materials in the same aqueous electrolytes. [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28] A possible reason is that the key advantage of ARLBs was low cost, and thus, the focus was limited to a few inexpensive materials (e.g., lithium salts). Aqueous electrolytes are definitely excellent choices for the fundamental studies of electrode materials, but the practical development of ARLBs needs overcoming the key obstacles rather than finding more cathode materials.In any case, aqueous electrolytes were occasionally used during the 2000s by various research groups, but there was no vivid plan for the development of ARLBs. These works have been extensively reviewed before, [29][30][31][32][33] and it is not aimed to repeat the general works on aqueous electrolytes here. During the recent years, new opportunities have been introduced, which can extend the stable potential window of aqueous electrolyte to the range of 3-4 V. Upon this advancement, aqueous electrolytes can fairly compete with the conventional nonaqueous electrolytes for the fabrication of cheaper and safer LIBs. On the other hand, novel designs such as self-healing [34] or flexible [16,35,36] ARLBs have paved the path for new practical potentials of aqueous electrolytes. The present paper specifically focuses on the recent advancements and attempts to foster the strategy of research to shed light on the pathway of this emerging area of research. Two factors are directly responsible for achieving a high energy density, the specific capacity, and the cell voltage. Since the former is not massively controlled by the electrolyte and the specific capacity of most electroactive Owing to the high voltage of lithium-ion batteries (LIBs), the dominating electrolyte is non-aqueous. The idea of an aqueous rechargeable lithium battery (ARLB) dates back to 1994, but it had attracted little attention due to the narrow stable potential window of aqueous electrolytes, which results in low energy density. However, aqueous electrolytes were employed during the 2000s for the fundamental studies of electrode materials in the absence of side reactions such as the decomposition of organic spec...

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“Water-in-Salt” electrolyte enabled LiMn2O4/TiS2 Lithium-ion batteries

Cited by 108 publications

References 21 publications

Recent Advances in Non-Flammable Electrolytes for Safer Lithium-Ion Batteries

Recent Advances in Non-Flammable Electrolytes for Safer Lithium-Ion Batteries

The application of nanostructured transition metal sulfides as anodes for lithium ion batteries

High‐Energy Aqueous Lithium Batteries

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