phosphate-based electrolyte and pristine graphite cathode

Impact of single vs. blended functional electrolyte

Two functional high-voltage additives, namely 2-(2,2,3,3,3-pentafluoropropoxy)-1,3,2-dioxaphospholane (PFPOEPi) and 1-methyl-3,5-bis(trifluoromethyl)-1H-pyrazole (MBTFMP) were combined as functional additive mixture in organic carbonate–based electrolyte formulation for high-voltage lithium battery application. Their impact on the overall performance in NMC111 cathode-based cells was

LiCoO /graphite battery Concentrated electrolyte boosting high

indicates that this concentrated electrolyte could enable LiCoO2/graphite battery excellent charge-discharge at subzero temperature Fig. S16. HR-TEM images of (a) pristine LiCoO2 cathode and cycled LiCoO2 cathodes disassembled from LiCoO2

The phosphorus-based electrolytes seem to be a good choice for flame-retardant or nonflammable electrolytes because of their low viscosity, high solubility, and low cost. In this paper, the problems and solutions of phosphate-based solvents as a safe electrolyte for LIBs are reviewed.

A Nonflammable Electrolyte Enabled High Performance

This phosphate-based electrolyte also demonstrates good compatibility with the commercial graphite anode, enabling the encouraging electrochemical performance of the K 0.5 MnO 2 |graphite full-cell. The present study provides new insights on further exploration of other electrolytes to advance the emerging low-cost and high-performance potassium-ion batteries.

Recent Trends in Electrode and Electrolyte Design for Aluminum

deintercalate ions from the electrolyte during the working of Al-based batteries. Discussion on the various cathode materials starting from graphite to structurally similar materials is necessary to understand the intricate relationship between electrodes and ions

A chemically stabilized sulfur cathode for lean

The electrolyte to sulfur ratio used for the lean electrolyte LSBs is 3 mL E /g S. The lean electrolyte LSBs are initially tested with the commercial electrolyte (1M LiPF 6 in EC/DMC). The small-sulfur-based cathode undergoes a quasi-solid-state reaction

DEVELOPMENT OF STABLE HIGH

iii ABSTRACT High-capacity Si-based anode is being considered as promising anode material for next generation of Li-ion battery. The energy density could be increased from 250-260 Wh kg-1 to 300- 330 Wh kg-1 via replacing graphite with Si-based anode. via replacing graphite with Si-based anode.

Improved Cycling Stability of LiCoO 2 at 4.5 V via Surface

2020/5/14Especially, a Li +-conductive interfacial layer would help the Li + migration between LiPF 6-based electrolyte and LCO cathode, resulting in a desired small interfacial impedance []. Herein, amorphous Li 0.35 La 0.56 TiO 3 (α-LLTO), which is one of the most successful solid electrolytes [ 29, 30 ], was directly deposited on the surface of made-up LCO electrodes through magnetron sputtering

Improved Electrocoagulation Reactor for Rapid Removal of Phosphate

that29 consisted of a 40 mL electrolyte chamber and an air cathode, but no charging (graphite) electrode. The sacrificial anode was a single piece of aluminum mesh (mesh size 200 per 2.54 cm, wire diameter 0.053 mm, opening 0.074 mm; TWP Corporation

Li

2021/5/3article{osti_1373002, title = {Li- and Mn-Rich Cathode Materials: Challenges to Commercialization}, author = {Zheng, Jianming and Myeong, Seungjun and Cho, Woongrae and Yan, Pengfei and Xiao, Jie and Wang, Chongmin and Cho, Jaephil and Zhang, Ji-Guang}, abstractNote = {The lithium- and manganese-rich (LMR) layered structure cathode exhibit one of the highest specific

Development of Advanced Electrolytes and Electrolyte Additives

Performance of Sulfone Based Electrolyte Using LiMn 1.5 Ni 0.5 O 4 (4.8V) Based System 0 20 40 60 80 100 0 20 40 60 80 100 120 140 I =10 mA.g-1 Charge Discharge Capacity (mAh g-1)-20 0 20 40 60 80 100 120 140 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 3th

Composite Cathode Material for Li

2010/11/153. Cathode materials based on iron oxides A cathode material for Li-ion technology based on iron oxides was always a desired object. The interest in iron compounds arises from the fact that iron is cheap, abundant in the earth crust and friendlier for the

Cathode Materials for Li

Currently, the anode is comprised of a Graphite mixture, while the cathode combines Lithium and other choice metals, and all materials in a battery have a theoretical energy density. With Lithium-ion, the anode is well optimized, and design changes will yield little

Highly Concentrated and Nonflammable Electrolyte for High Energy Density K

K-based dual-ion batteries (K-DIBs) show the advantages of being cost-effective, high-voltage, and environmentally friendly; however, their energy density is restricted by limited intercalation capacity of anions at the graphite cathode and low electrolyte concentration.

Understanding the Outstanding High‐Voltage Performance

a) Surface layer composition of anode and cathode for the EC‐based and EC‐free electrolyte obtained from Al 2 O 3 ‐NCM523||graphite cells after 100 cycles, showing more degraded LiPF 6 species on both electrodes for the EC‐free electrolyte.

Understanding the interactions of phosphonate

2013/12/30However, when blended with commercial carbonate electrolyte to get a completely non-flammable electrolyte, some differences are observed. For electrolyte containing 50% DMMP (Fig. 2B), the graphite electrode still shows an irreversible character with a large reduction current from 1.4 V and no oxidation current due to lithium de-intercalation from graphite electrode is observed, which is the

Li

2021/5/3article{osti_1373002, title = {Li- and Mn-Rich Cathode Materials: Challenges to Commercialization}, author = {Zheng, Jianming and Myeong, Seungjun and Cho, Woongrae and Yan, Pengfei and Xiao, Jie and Wang, Chongmin and Cho, Jaephil and Zhang, Ji-Guang}, abstractNote = {The lithium- and manganese-rich (LMR) layered structure cathode exhibit one of the highest specific

High Voltage Electrolytes for Li

• SOA electrolytes based on carbonate solvents decompose near or above 4.5 V • Lack of reliable 5 V cathodes as characterization platform. • Lack of understanding of oxidation stability and reactive pathway of the electrolyte at the cathode/electrolyte interface

Polymer Electrolytes for High Energy Density Ternary

2019/2/5Schematic illustrations of LBs during cycling: a LiNi 0.8 Co 0.15 Al 0.05 O 2 (NCA)/liquid electrolyte/graphite and b NCA/PETEA-based gel polymer electrolyte/graphite []. Full size image Overall, polyacrylate-based electrolytes are promising candidates to replace conventional liquid electrolytes and resolve the safety concerns of TCM-based LBs.

On the Manganese Dissolution Process from LiMn 2 O 4 Cathode

On the Manganese Dissolution Process from LiMn 2O 4 Cathode Materials Yonas Tesfamhret, Haidong Liu, Zhigang Chai, Erik Berg, and Reza Younesi*[a] Transition metal (TM) dissolution is a process experienced by most cathode materials based on lithium

A Nonflammable Electrolyte Enabled High Performance K0.5MnO2

This phosphate-based electrolyte also demonstrates good compatibility with the commercial graphite anode, enabling the encouraging electrochemical performance of the K 0.5 MnO 2 |graphite full-cell. The present study provides new insights on further exploration of other electrolytes to advance the emerging low-cost and high-performance potassium-ion batteries.

Functionality Selection Principle for High Voltage Lithium

Abstract A new class of electrolyte additives based on cyclic fluorinated phosphate esters was rationally designed and identified as being able to stabilize the surface of a LiNi0.5Mn0.3Co0.2O2 (NMC532) cathode when cycled at potentials higher than 4.6 V vs Li+/Li.

Development of Electrolytes for Lithium

graphite/LiNi 0.5 Mn 1.5 O 4 cells cycled to high voltage (4.8 V vs Li). • Develop an electrolyte formulation that allows for superior performance of graphite/LiNi 0.5 Mn 1.5 O 4 cells. • Develop additives that allow for formation of protective coatings on the cathode,

Spontaneous reaction between an uncharged lithium

The reaction between an uncharged Li2FeSiO4 (LFS) cathode and a LiPF6-EC/DMC electrolyte is revealed by in situ XANES in coin cells. This study shows clear evidence of delithiation and iron oxidation in LFS prior to cycling. Subsequent cycling appears to

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