Vinylene carbonate and tris(trimethylsilyl) phosphite hybrid additives to improve the electrochemical performance of spinel lithium manganese oxide/graphite cells at 60 °C

Koo, Bonjae; Lee, Jeongmin; Lee, Yong-Won; Kim, Jun Ki; Choi, Nam‐Soon

doi:10.1016/j.electacta.2015.05.129

Cited by 24 publications

(24 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…[35] Organic sulfur-containing compounds, such as sulfates, sulfites, and sultones, have been proposed as promising functional additives to stabilize SEI layers (especially on graphite anode) better than the most well-known vinylene carbonate, at high voltage and elevated temperatures. [54][55][56][60][61][62][63][64][65][66] In this paper, TMSP and PCS (Figure 1) are unprecedentedly prescribed as binary functional additives for a conventional LiPF 6 Figure S1 (Supporting Information). [32,46,54,57] With a lower LUMO energy than carbonate solvent, 1,3-propanediolcyclic sulfate (PCS) can be preferentially reduced to modify the anodic SEI layer by minimizing the deposition of Mn-species onto the negative electrode in LiNi 0.5 Mn 1.5 O 4 / MCMB (graphitic mesocarbon microbeads) battery system.…”

mentioning

confidence: 99%

Prescribing Functional Additives for Treating the Poor Performances of High‐Voltage (5 V‐class) LiNi_0.5Mn_1.5O₄/MCMB Li‐Ion Batteries

Pang

Chen

et al. 2017

Advanced Energy Materials

169

147

View full text Add to dashboard Cite

In this paper, tris(trimethylsilyl) phosphite (TMSP) and 1,3‐propanediolcyclic sulfate (PCS) are unprecedentedly prescribed as binary functional additives for treating the poor performances of high‐voltage (5 V‐class) LiNi0.5Mn1.5O4/MCMB (graphitic mesocarbon microbeads) Li‐ion batteries at both room temperature and 50 °C. The high‐voltage LiNi0.5Mn1.5O4/MCMB cell with binary functional additives shows a preponderant discharge capacity retention of 79.5% after 500 cycles at 0.5 C rate at room temperature. By increasing the current intensity from 0.2 to 5 C rate, the discharge capacity retention of the high‐voltage cell with binary functional additives is ≈90%, while the counterpart is only ≈55%. By characterizations, it is rationally demonstrated that the binary functional additives decompose and participate in the modification of solid–electrolyte interface layers (both electrodes), which are more conductive, protective, and resistant to electrolyte oxidative/reductive decompositions (accompanying active‐Li+ consuming parasitic reactions) due to synergistic effects. Specifically, the TMSP additive can stabilize LiPF6 salt and scavenge erosive hydrofluoric acid. More encouragingly, at 50 °C, the high‐voltage cell with binary functional additives holds an ultrahigh discharge capacity retention of 79.5% after 200 cycles at 1 C rate. Moreover, a third designed self‐extinguishing flame‐retardant additive of (ethoxy)‐penta‐fluoro‐cyclo‐triphosphazene (PFPN) is introduced for reducing the flammability of the aforementioned binary functional additives containing electrolyte.

show abstract

mentioning

confidence: 99%

Prescribing Functional Additives for Treating the Poor Performances of High‐Voltage (5 V‐class) LiNi_0.5Mn_1.5O₄/MCMB Li‐Ion Batteries

Pang

Chen

et al. 2017

Advanced Energy Materials

169

147

View full text Add to dashboard Cite

show abstract

“…The self-discharge behavior during storage at 60 °C was compared for the fully charged LMO/graphite cells with and without P2 to cross-check the enhanced thermal stability enabled by the P2 additive. It has been reported that the dissolution of Mn ions from the cathode and their subsequent deposition on the anode can affect the OCV during high-temperature storage [ 37 , 38 ]. As shown in Figure 4 a, the P2 electrolyte significantly delayed the OCV drop of the cell compared to that with the base electrolyte (the cell with the base and P2 electrolyte took 181 h and 336 h, respectively, to reach 4.0 V ).…”

Section: Resultsmentioning

confidence: 99%

Effects of a Sodium Phosphate Electrolyte Additive on Elevated Temperature Performance of Spinel Lithium Manganese Oxide Cathodes

Park

Lee

2021

Materials

View full text Add to dashboard Cite

LiMn2O4 (LMO) spinel cathode materials suffer from severe degradation at elevated temperatures because of Mn dissolution. In this research, monobasic sodium phosphate (NaH2PO4, P2) is examined as an electrolyte additive to mitigate Mn dissolution; thus, the thermal stability of the LMO cathode material is improved. The P2 additive considerably improves the cyclability and storage performances of LMO/graphite and LMO/LMO symmetric cells at 60 °C. We explain that P2 suppresses the hydrofluoric acid content in the electrolyte and forms a protective cathode electrolyte interphase layer, which mitigates the Mn dissolution behavior of the LMO cathode material. Considering its beneficial role, the P2 additive is a useful additive for spinel LMO cathodes that suffer from severe Mn dissolution.

show abstract

“…TMSPi 可抑制正极界面 Mn 的溶解, 而 VC 可减少负极 Mn 的沉积 , 因此提高了电池在 60 ℃ 的电化学性能 [102,103] . [113] , 兼具较好的阻燃性和成膜性.…”

Section: Tmspunclassified

Review of Electrolyte Additives for Ternary Cathode Lithium-ion Battery

Deng¹,

Sun²,

Wan³

et al. 2018

Acta Chim. Sinica

View full text Add to dashboard Cite

, M＝Mn, NMC; M＝Al, NCA)} are one of the most promising cathode materials of lithium-ion batteries (LIBs). However, in the traditional electrolyte system, they will undergo dramatic structural changes and interface side reactions at high potential and high temperature, which will bring great challenges to their practical application, especially for their cycle life and safety. Developing appropriate electrolyte additive is one of the most economical and effective methods to improve the electrochemical performance of LIBs. Based on the intrinsic structure of material, electrolyte additives used for NMC and NCA ternary cathode and their reaction mechanism in the past 5 years are reviewed in this paper, which include vinylene carbonate (VC), fluoro-compounds, new lithium salts, P-based, B-based, S-based, nitrile, others and combinative additives. Among them, VC becomes a kind of universal additive, which can improve the efficiency and cycle life at low voltage and normal temperature. Fluoro-compounds have been developed from mono substituted such as Fluorinated ethylene carbonate (FEC) to multi-fluorine substituted, which can improve the stability of electrode/electrolyte interface under high voltage. New lithium salt additives are mainly used to improve the film forming performance under high voltage and high temperature, such as Lithium bis(fluorosulfonyl)imide (LiFSI), Lithium difluorophosphate (LiDFP). P-contained additives [such as Tris(trimethylsilyl)phosphite (TMSPi)] are mainly to improve the stability of anode-electrolyte interface, and it has obvious synergistic effect when they combined with additives such as VC. B-contained additives are mainly used to improve the dissociation degree and stability of lithium salt, such as Tris(trimethylsilyl)borate (TMSB). S-contained additives are mainly used to improve the ionic conductivity and stability of anode SEI film, such as Prop-1-ene-1,3-sultone (PES). Nitriles are benefited from the strong electron withdrawing effect of -CN, which can improve the stability of the electrode/electrolyte interface at high voltage. Other types of additives are some heterocyclic compounds having film forming ability and various silanes which can eliminate HF and H 2 O. Combinative additives are developed from VC based composite to PES and PBF (pyridine boron trifluoride) system, which can endure even harsher conditions.

show abstract

Vinylene carbonate and tris(trimethylsilyl) phosphite hybrid additives to improve the electrochemical performance of spinel lithium manganese oxide/graphite cells at 60 °C

Cited by 24 publications

References 20 publications

Prescribing Functional Additives for Treating the Poor Performances of High‐Voltage (5 V‐class) LiNi_0.5Mn_1.5O₄/MCMB Li‐Ion Batteries

Prescribing Functional Additives for Treating the Poor Performances of High‐Voltage (5 V‐class) LiNi_0.5Mn_1.5O₄/MCMB Li‐Ion Batteries

Effects of a Sodium Phosphate Electrolyte Additive on Elevated Temperature Performance of Spinel Lithium Manganese Oxide Cathodes

Review of Electrolyte Additives for Ternary Cathode Lithium-ion Battery

Contact Info

Product

Resources

About

Vinylene carbonate and tris(trimethylsilyl) phosphite hybrid additives to improve the electrochemical performance of spinel lithium manganese oxide/graphite cells at 60 °C

Cited by 24 publications

References 20 publications

Prescribing Functional Additives for Treating the Poor Performances of High‐Voltage (5 V‐class) LiNi0.5Mn1.5O4/MCMB Li‐Ion Batteries

Prescribing Functional Additives for Treating the Poor Performances of High‐Voltage (5 V‐class) LiNi0.5Mn1.5O4/MCMB Li‐Ion Batteries

Effects of a Sodium Phosphate Electrolyte Additive on Elevated Temperature Performance of Spinel Lithium Manganese Oxide Cathodes

Review of Electrolyte Additives for Ternary Cathode Lithium-ion Battery

Contact Info

Product

Resources

About

Prescribing Functional Additives for Treating the Poor Performances of High‐Voltage (5 V‐class) LiNi_0.5Mn_1.5O₄/MCMB Li‐Ion Batteries

Prescribing Functional Additives for Treating the Poor Performances of High‐Voltage (5 V‐class) LiNi_0.5Mn_1.5O₄/MCMB Li‐Ion Batteries