In perspective to Lithium Difluoro(oxalato) Borate which has the same benefits plus additional ones. Research first came out on LiBOB in the early 2000s and with a fair few Market reports with CAGR and market size numbers behind paywall. Likely decent numbers with growth in line with EV market forecasts if Lithium Difluoro(oxalato) Borate does not take over.
Lithium Bis(oxalato) Borate (LiBOB) Market
Lithium Bis(oxalato) Borate (LiBOB) has shown potential to be a powerful electrolyte additive to improve lithium-ion battery performance.
LiBOB is a proprietary* conductive agent for the use in high performance Lithium Batteries, Lithium Ion Batteries and Lithium Polymer Batteries. This halide-free product may be used instead of traditional fluorinated compounds like LiPF6, LiBF4, Li-triflate, methanides, imides etc. or as an additive to these classical electrolyte salts. https://www.albemarle.com/products/lithium-bis-oxalatoborate-libob-abg-advanced-battery-grade
LiBOB is synthesized using lithium carbonate (Li2CO3, ≥ 99 %, Alfa Aesar), oxalic acid (C2H2O4, ≥ 98 %, Alfa Aeasar), and boric acid (H3BO3, ≥ 99 %, Alfa Aesar) as starting materials. - A Guide to Water Free Lithium Bis(oxalate) Borate (LiBOB), University of Oxford & Koç University
A Guide to Water Free Lithium Bis(oxalate) Borate (LiBOB)
University of Oxford, Department of Materials, Oxford, United Kingdom.
Koç University, Department of Chemistry, Sarıyer, Istanbul, 34450, Turkey.
Koç University Boron and Advanced Materials Application and Research Center (KUBAM),
Istanbul, 34450, Turkey.
Gebze Technical University, Energy Technologies Institute, Gebze, Kocaeli, 41400, Turkey.
Gebze Technical University, Department of Mechanical Engineering, Gebze, Kocaeli, 41400, Turkey.
Lithium bis(oxalate)borate, LiB(C2O4)2 (LiBOB), is one of the most important electrolyte additives for Li-ion batteries (LIBs) due to its numerous advantages such as thermal stability, good solubility in organic solvents, high conductivity, and low cost as well as providing safer operations with superior electrochemical performance compared to conventional electrolyte combinations.
However, the use of LiBOB is limited due to slight instability issues under ambient conditions that might require extra purification steps and might result in poorer performances in real systems.
Here, we address some of these issues and report the high purity water free LiBOB synthesized with fewer processing steps employing lithium carbonate, oxalic acid, and boric acid as lowcost starting materials, and via ceramic processing methods under protective atmosphere.
Anhydrous LiBOB could be widely used as an electrolyte additive to improve the overall electrochemical performances for LIBs through development of a protective solid electrolyte interphase (SEI) on the surface of high voltage cathodes and bringing about superior electrochemical properties with increased cycling stability, rate capability and coulombic efficiency, if synthesized, purified, and handled properly before use in real electrochemical systems.
Effects of Lithium Bis(oxalate)borate Electrolyte Additive on the Formation of a Solid Electrolyte Interphase on Amorphous Carbon Electrodes by Operando Time-Slicing Neutron Reflectometry ACS Appl. Mater. Interfaces 2022, 14, 21, 24526–24535 Publication Date:May 18, 2022 https://doi.org/10.1021/acsami.2c06471
Comprehensive analyses were performed using neutron reflectivity and hard X-ray photoelectron spectroscopy to understand the structure and composition of the solid electrolyte interphase (SEI) layer during charge–discharge processes and because of the addition of lithium bis(oxalate)borate (LiBOB) to improve the battery performance.
The chemical composition of the SEI was assessed using these methods, and the amount of Li+ intercalated in the anode during the electrochemical reaction was evaluated.
The results demonstrated that Li2C2O4 was produced initially but later decomposed to Li2CO3 on the first charge cycle. Presumably, the SEI layer formed by the decomposition of LiBOB was a single dense layer and chemically stable during the further charge–discharge processes owing to the difference in the reaction process.
Therefore, the reduced Li+ transfer resistance and charging capacity accounted for the substantial improvement contributed by adding LiBOB. Moreover, the charges used for the intercalation of Li+ and SEI formation during the two-cycle processes were analyzed.
The addition of LiBOB increased the discharge capacity of the anode and provided an additional charge used for SEI formation, presumably for decomposing Li2C2O4, which could reflect the durability of the Li-ion batteries.
High Voltage LiCoO2 Cathodes with High Purity Lithium Bis(oxalate) Borate (LiBOB) for Lithium-Ion Batteries ACS Appl. Energy Mater. 2022, 5, 8, 10098–10107 Publication Date:July 26, 2022 https://doi.org/10.1021/acsaem.2c01789
Lithium bis(oxalate) borate, LiB(C2O4)2 (LiBOB) can be used as an electrolyte additive for lithium-ion batteries (LIBs) to prevent structural change and electrolyte decomposition by developing a protective solid electrolyte interphase (SEI) on the cathode surface.
Impurities present in LiBOB result in significant electrochemical performance decays related to higher full cell impedance. Here, a practical purification technique is performed to remove these impurities.
High-purity LiBOB improves the interfacial stability of the LCO cathode by inhibiting oxidative decomposition of electrolytes, undesirable structural changes, and cobalt dissolution bringing about safer cycling even at high operation voltages.
Unraveling the Dynamic Interfacial Behavior of LiCoO2 at Various Voltages with Lithium Bis(oxalato)borate for Lithium-Ion Batteries ACS Appl. Mater. Interfaces 2022, 14, 8, 10267–10276 Publication Date:February 21, 2022 https://doi.org/10.1021/acsami.1c21952
The electrochemical dynamic behavior of the solid electrolyte interface (SEI) formed on LiCoO2 (LCO) by lithium bis(oxalato)borate (LiBOB) is investigated at various cutoff voltages.
Particularly, for layered cathode active materials, various cutoff voltages are used to control the delithiation states; however, systematic investigations of the voltage and SEI are lacking.
To increase the practical energy density of the LCO, a high cutoff voltage is pursued to utilize a state of high delithiation. However, this high cutoff voltage causes the electrolyte to undergo side reactions and the crystalline structure changes irreversibly, limiting the cycle life.
In a low-voltage environment (<4.7 V), LiBOB improves the initial Coulombic efficiency and cycling performance by forming an effective SEI, which suppresses side reactions.
At higher voltage levels (4.7–4.9 V), LiBOB no longer effectively protects the surface, causing the electrochemical performance to decrease rapidly.
The main cause of this phenomenon is the decomposition of LiBOB-SEI at a high voltage, as shown by systematic surface and electrochemical analyses comprising linear sweep voltammetry, cyclic voltammetry, and electrochemical impedance spectroscopy.
In conclusion, LiBOB can suppress side reactions of the electrolyte by SEI formation, but the SEI decomposes at voltage levels higher than 4.7 V.
Lithium Bis(oxalate)borate as an Electrolyte Salt for Supercapacitors in Elevated Temperature Applications Journal of Electrochemical Science and Technology 2017;8(4):314-322. DOI: https://doi.org/10.5229/JECST.2017.8.4.314
The electrolyte plays one of the most significant roles in the performance of electrochemical supercapacitors.
Most liquid organic electrolytes used commercially have temperature and potential range constraints, which limit the possible energy and power output of the supercapacitor.
The effect of elevated temperature on a lithium bis(oxalate)borate(LiBOB) salt-based electrolyte was evaluated in a symmetric supercapacitor assembled with activated carbon electrodes and different electrolyte blends of acetonitrile(ACN) and propylene carbonate(PC).
The electrochemical properties were investigated using linear sweep voltammetry, cyclic voltammetry, galvanostatic charge-discharge cycles, and electrochemical impedance spectroscopy.
In particular, it was shown that LiBOB is stable at an operational temperature of 80°C, and that, blending the solvents helps to improve the overall performance of the supercapacitor.
The cells retained about 81% of the initial specific capacitance after 1000 galvanic cycles in the potential range of 0-2.5 V.
Thus, LiBOB/ACNC electrolytes exhibit a promising role in supercapacitor applications under elevated temperature conditions.
5EA Price at posting:
$1.80 Sentiment: Buy Disclosure: Held
C electrolytes exhibit a promising role in supercapacitor applications under elevated temperature conditions.
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