1,4-Phenylene diisocyanate (PPDI)-containing low H2O/HF and multi-functional electrolyte for LiNi0·6Co0·2Mn0·2O2/graphite batteries with enhanced performances

Wang, Wenlian; Yang, Tianxiang; Li, Shuai; Lü, Jing; Xin, Zhao; Fan, Weizhen; Fan, Chaojun; Zuo, Xiaoxi; Tie, Shaolong; Nan, Junmin

doi:10.1016/j.jpowsour.2020.229172

Cited by 21 publications

(16 citation statements)

References 63 publications

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“…Interestingly, an additional reduction peak is recorded at 2.5 V, which may be due to the reduction of HBAG. Moreover, the theoretical calculation results show that HBAG has higher HOMO energy and lower LUMO energy in Figure c, d, which further confirms that HBAG has the possibility of preferential decomposition on both electrodes. ,− …”

Section: Resultssupporting

confidence: 52%

4-Hydroxy-2-Butanesulfonic Acid Gamma-sultone as a Bifunctional Electrolyte Additive for LiCoO₂/Graphite Batteries With Enhanced Performances

Lei

Deng

Zuo

et al. 2021

ACS Appl. Energy Mater.

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To date, enhancing the specific energy of LiCoO 2 /graphite batteries by increasing the cut-off charging voltage through the strategy of adding multifunctional additives in the electrolyte it is still an effective method and research hotspot. In this paper, 4-hydroxy-2-butanesulfonic acid gamma-sultone (HBAG) is demonstrated as an effective bifunctional electrolyte additive to improve the electrochemical performances of 4.4 V LiCoO 2 /graphite batteries. With the addition of 1.0% HBAG in the electrolyte, a capacity retention of 94.88% after 160 cycles can be obtained when the batteries are cycled in the voltage range of 3.0−4.4 V at 25 °C, which is much higher than the batteries with the base electrolyte (54.77%). It is indicated that the HBAG additive in the electrolyte is preferentially decomposed on two electrodes, which facilitates the formation of thin and uniform films on the cathode and anode. In particular, the interface films possess excellent Li + intercalation/deintercalation properties and can prevent further decomposition of the electrolyte, resulting in battery performance improvement. These results indicate that the HBAG-containing electrolyte has promising prospects for application in high-voltage LiCoO 2 /graphite batteries with good performance.

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Section: Resultssupporting

confidence: 52%

4-Hydroxy-2-Butanesulfonic Acid Gamma-sultone as a Bifunctional Electrolyte Additive for LiCoO₂/Graphite Batteries With Enhanced Performances

Lei

Deng

Zuo

et al. 2021

ACS Appl. Energy Mater.

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“…The impedance of the cells was characterized by the EIS technique, as shown in Figure . The EIS spectra usually consist of the ohmic resistance R Ω , the resistance R SEI of Li + migration through the SEI film, the charge transfer resistance R ct , and the Warburg impedance ( W O ) describing the diffusion of Li + inside the active material particles. , Figure a–c shows the EIS spectra of the cells after the 1st, 300th, and 600th cycles. The equivalent circuit of EIS is shown in Figure S3.…”

Section: Resultsmentioning

confidence: 99%

Comprehensive Insight into the Probability of Cyclotriphosphazene Derivatives as the Functional Electrolyte Additives in Lithium-Ion Batteries: Which Is Better and Why?

Wang

Zeng

Fan³

et al. 2021

ACS Appl. Energy Mater.

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Enhancing the flame retardancy of electrolytes and the quality of interface films is of great significance to improve the safety performance of lithium-ion batteries (LIBs). In this work, the effects of (ethoxy)pentafluorocyclotriphosphazene (PFPN), hexafluorocyclotriphosphazene (FPPN), and pentafluoro(phenoxy)cyclotriphosphazene (HFPN) as flame-retardant additives in the functional electrolyte on the performances of LiNi0.6Mn0.2Co0.2O2 (NCM622)/graphite pouch cells are comprehensively investigated. It is indicated that the contents of PFPN, FPPN, and HFPN, respectively, reach 5, 8, and 8% to achieve the purpose of flame retardancy in the 1 M LiPF6/EC + EMC (EC/EMC = 1:2 in weight) system. When the cells without and with PFPN, FPPN, and HFPN additives are, respectively, charge–discharged in the voltage range of 3.0–4.4 V at 1C, their capacity retentions are 36.1, 60.7, 74.7, and 73.8% after 150 cycles. The interface analysis and theoretical calculation show that PFPN, FPPN, and HFPN can facilitate the formation of stable interface films on two electrodes and subsequently improve the battery performance. The addition of cyclotriphosphazene flame retardant in the electrolyte ultimately improves the safety of NCM622/graphite pouch cells without sacrificing electrochemical performance. The as-prepared additive-containing electrolyte exhibits promising prospects in the application, and the evaluation method is also useful to develop the functional electrolyte with flame retardant and film-forming properties.

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“…In recent years, multifunctional additives have been increasingly more popular. These CEIforming additives typically contain functional groups such as isocyanate (NCO), [97][98][99][100] silane derivatives (SiO), [101][102][103][104][105][106] sultones (SO), [88,[107][108][109][110][111] borates (BO), [112][113][114][115] or phosphorouscontaining groups, [116][117][118][119][120] which are capable of scavenging HF. Many of these CEI-forming additives can also promote SEI formation on the anode, serving multiple important functions in the cell.…”

Section: Liquid Electrolyte Additives For Electrode Interfacementioning

confidence: 99%

Perspectives on Improving the Safety and Sustainability of High Voltage Lithium‐Ion Batteries Through the Electrolyte and Separator Region

Cavers

Molaiyan

Abdollahifar

et al. 2022

Advanced Energy Materials

106

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Lithium‐ion batteries (LIBs) are promising candidates within the context of the development of novel battery concepts with high energy densities. Batteries with high operating potentials or high voltage (HV) LIBs (>4.2 V vs Li+/Li) can provide high energy densities and are therefore attractive in high‐performance LIBs. However, a variety of challenges (including solid electrolyte interface (SEI), lithium plating, etc.) and related safety issues (such as gas formation or thermal runaway effects) must be solved for the practical, widespread application of HV‐LIBs. Most of these challenges arise in the region between the electrodes: the electrolyte region. This review provides an overview of recent development and progress on the electrolyte region, including liquid electrolytes, ionic liquids, gel polymer electrolytes, separators, and solid electrolytes for HV‐LIBs applications. A focus on improving the safety of these systems, with some perspectives on their relative cost and environmental impact, is given. Overall, the new information is encouraging for the development of HV‐LIBs, and this review serves as a guide for potential strategies to improve their safety, allowing the development of HV‐LIBs, including solid‐state batteries, to be accelerated to practical relevance.

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1,4-Phenylene diisocyanate (PPDI)-containing low H2O/HF and multi-functional electrolyte for LiNi0·6Co0·2Mn0·2O2/graphite batteries with enhanced performances

Cited by 21 publications

References 63 publications

4-Hydroxy-2-Butanesulfonic Acid Gamma-sultone as a Bifunctional Electrolyte Additive for LiCoO₂/Graphite Batteries With Enhanced Performances

4-Hydroxy-2-Butanesulfonic Acid Gamma-sultone as a Bifunctional Electrolyte Additive for LiCoO₂/Graphite Batteries With Enhanced Performances

Comprehensive Insight into the Probability of Cyclotriphosphazene Derivatives as the Functional Electrolyte Additives in Lithium-Ion Batteries: Which Is Better and Why?

Perspectives on Improving the Safety and Sustainability of High Voltage Lithium‐Ion Batteries Through the Electrolyte and Separator Region

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1,4-Phenylene diisocyanate (PPDI)-containing low H2O/HF and multi-functional electrolyte for LiNi0·6Co0·2Mn0·2O2/graphite batteries with enhanced performances

Cited by 21 publications

References 63 publications

4-Hydroxy-2-Butanesulfonic Acid Gamma-sultone as a Bifunctional Electrolyte Additive for LiCoO2/Graphite Batteries With Enhanced Performances

4-Hydroxy-2-Butanesulfonic Acid Gamma-sultone as a Bifunctional Electrolyte Additive for LiCoO2/Graphite Batteries With Enhanced Performances

Comprehensive Insight into the Probability of Cyclotriphosphazene Derivatives as the Functional Electrolyte Additives in Lithium-Ion Batteries: Which Is Better and Why?

Perspectives on Improving the Safety and Sustainability of High Voltage Lithium‐Ion Batteries Through the Electrolyte and Separator Region

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Product

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4-Hydroxy-2-Butanesulfonic Acid Gamma-sultone as a Bifunctional Electrolyte Additive for LiCoO₂/Graphite Batteries With Enhanced Performances

4-Hydroxy-2-Butanesulfonic Acid Gamma-sultone as a Bifunctional Electrolyte Additive for LiCoO₂/Graphite Batteries With Enhanced Performances