Tris(trimethylsilyl) borate as an electrolyte additive for high-voltage lithium-ion batteries using LiNi 1/3 Mn 1/3 Co 1/3 O 2 cathode

Yan, Chunfeng; Xu, Ying; Xia, Jianrong; Gong, Cui-Ran; Chen, Kerong

doi:10.1016/j.jechem.2016.04.010

Cited by 38 publications

(17 citation statements)

References 36 publications

(34 reference statements)

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“…It is speculated that there might be two main possible pathways for bond cleavage of the TBDB additive: boron–boron bond and boron–oxygen bond . Here, the energies for boron–boron and boron–oxygen bond breaking are calculated based on the average value due to the symmetry of the molecular structure of TBDB.…”

Section: Results and Discussionmentioning

confidence: 99%

“…In principle, they possess relatively higher occupied molecular orbitals (HOMOs) in comparison with carbonate solvents, suggesting a tendency toward preferential oxidation on the cathode . Additionally, owing to the electrophilic property of boron, boron-type additives also help to stabilize the LiPF 6 salt by trapping PF 6 – and F – , hence depressing the generation of LiF, Li 2 CO 3 , and hydrofluoric acid (HF) . As a representative example, addition of a 2% lithium bis(oxalato)borate (LiBOB) additive expedited the formation of a favorable CEI layer that helped to attain a high capacity retention of 96.8% after 200 cycles at a C/3 rate .…”

Section: Introductionmentioning

confidence: 99%

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Enhanced Interfacial Stability of a LiNi_0.9Co_0.05Mn_0.05O₂ Cathode by a Diboron Additive

Zou

Liu

Yang

et al. 2021

ACS Appl. Energy Mater.

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Ni-rich LiNi x Co y Mn z O 2 (NCM, x Ni ≥ 0.9) layered materials are appealing cathode candidates for future-generation higher-energy-density lithium-ion batteries (LIBs). However, structural and interfacial instability of Ni-rich cathodes needs to be addressed prior to the large-scale deployment in electric vehicles. Herein, a diboron electrolyte additive 5,5,5′,5′-tetramethyl-2,2′-bi-1,3,2-dioxaborinane (TBDB) is proposed for constructing a stable LiNi 0.9 Co 0.05 Mn 0.05 O 2 (NCM90)/electrolyte interface, thus improving the long-term cycle life and rate capability of an NCM90 cathode. Using an optimized 0.3% TBDB-containing electrolyte, the NCM90 cathode shows a capacity retention up to 84.3% after 200 cycles at 1C at a charge cutoff of 4.4 V, much superior over 70.1% when using the baseline electrolyte. The obvious performance improvement could be explained by the fact that TBDB with higher highest occupied molecular orbital (HOMO) energy is preferentially oxidized before electrolyte solvents, through boron−boron bond cleavage, generating a compact, thin, and protective cathode electrolyte interphase (CEI) layer on the cathode electrode. As a result, the electrolyte decomposition is effectively restrained with fewer poorly conducting byproducts being accumulated, which significantly enhances the interfacial stability and redox reaction kinetics of a Ni-rich NCM90 cathode.

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Section: Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Enhanced Interfacial Stability of a LiNi_0.9Co_0.05Mn_0.05O₂ Cathode by a Diboron Additive

Zou

Liu

Yang

et al. 2021

ACS Appl. Energy Mater.

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“…Electrolyte additives for Ni-based cathodes with different Ni contents and their electrolyte performance are presented in Figure a and in Tables S1–S6. Film-forming additives possessing boron, ,,, sulfur, ,, fluorine, , and phosphorus − atoms have been reported for LiNi 1/3 Co 1/3 Mn 1/3 O 2 (NCM111) and NCM523 cathodes, which have relatively low Ni contents (Figure a). The boron-containing additives trimethyl boroxine (TMB), triethyl borate (TEB), tris(trimethylsilyl)borate (TMSB), and lithium difluoro(oxalato)borate (LiDFOB) have been used to improve the electrochemical performance of NCM111 cathodes .…”

mentioning

confidence: 99%

“…Film-forming additives possessing boron, ,,, sulfur, ,, fluorine, , and phosphorus − atoms have been reported for LiNi 1/3 Co 1/3 Mn 1/3 O 2 (NCM111) and NCM523 cathodes, which have relatively low Ni contents (Figure a). The boron-containing additives trimethyl boroxine (TMB), triethyl borate (TEB), tris(trimethylsilyl)borate (TMSB), and lithium difluoro(oxalato)borate (LiDFOB) have been used to improve the electrochemical performance of NCM111 cathodes . TMB oxidizes at a relatively low potential of 4.15 V vs Li/Li + compared with additive-free electrolytes with an anodic limit of 4.32 V vs Li/Li + .…”

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confidence: 99%

Electrolyte-Additive-Driven Interfacial Engineering for High-Capacity Electrodes in Lithium-Ion Batteries: Promise and Challenges

et al. 2020

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Electrolyte additives have been explored to attain significant breakthroughs in the long-term cycling performance of lithium-ion batteries (LIBs) without sacrificing energy density; this has been achieved through the development of stable electrode interfacial structures and the elimination of reactive substances. Here we highlight the potential and the challenges raised by studies on electrolyte additives toward addressing the interfacially induced deterioration of high-capacity electrodes with a focus on Ni-rich layered oxides and Si, which are expected to satisfy the growing demands for high-energy-density batteries. We also discuss issues with the design of electrolyte additives for practical viability. A deep understanding of the roles of existing electrolyte additives depending on their functional groups will aid in the design of functional additive moieties capable of building robust interfacial layers, scavenging undesired reactive species, and suppressing the gas generation that causes safety hazards and shortened lifetimes of LIBs.

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“…Other additives such as p-toluenesulfonyl isocyanate (PSTI), [63] triethylborate (TEB), [64] and tris(trimethylsilyl)borate (TMSB) [65] have also been adopted to enhance the electrochemical performances of Li/NMC cells.A ss een in Table 1, TMSB results in an impressive enhancement in the cell performance at both room and elevated temperatures (60 8 8C). This is related to the preferential oxidative reaction with TMSB,which is able to protectively modify the CEI film in am anner that suppresses electrolyte decomposition and degradation of the electrode surface structure.…”

Section: Additive For Protection/stabilization Of the Cathodementioning

confidence: 99%

Electrolyte Additives for Lithium Metal Anodes and Rechargeable Lithium Metal Batteries: Progress and Perspectives

et al. 2018

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Lithium metal (Li ) rechargeable batteries (LMBs), such as systems with a Li anode and intercalation and/or conversion type cathode, lithium-sulfur (Li-S), and lithium-oxygen (O )/air (Li-O /air) batteries, are becoming increasingly important for electrifying the modern transportation system, with the aim of sustainable mobility. Although some rechargeable LMBs (e.g. Li /LiFePO batteries from Bolloré Bluecar, Li-S batteries from OXIS Energy and Sion Power) are already commercially viable in niche applications, their large-scale deployment is hampered by a number of formidable challenges, including growth of lithium dendrites, electrolyte instability towards high voltage intercalation-type cathodes, the poor electronic and ionic conductivities of sulfur (S ) and O , as well as their corresponding reduction products (e.g. Li S and Li O), dissolution, and shuttling of polysulfide (PS) intermediates. This leads to a short lifecycle, low coulombic/energy efficiency, poor safety, and a high self-discharge rate. The use of electrolyte additives is considered one of the most economical and effective approaches for circumventing these problems. This Review gives an overview of the various functional additives that are being applied and aims to stimulate new avenues for the practical realization of these appealing devices.

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Tris(trimethylsilyl) borate as an electrolyte additive for high-voltage lithium-ion batteries using LiNi 1/3 Mn 1/3 Co 1/3 O 2 cathode

Cited by 38 publications

References 36 publications

Enhanced Interfacial Stability of a LiNi_0.9Co_0.05Mn_0.05O₂ Cathode by a Diboron Additive

Enhanced Interfacial Stability of a LiNi_0.9Co_0.05Mn_0.05O₂ Cathode by a Diboron Additive

Electrolyte-Additive-Driven Interfacial Engineering for High-Capacity Electrodes in Lithium-Ion Batteries: Promise and Challenges

Electrolyte Additives for Lithium Metal Anodes and Rechargeable Lithium Metal Batteries: Progress and Perspectives

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Tris(trimethylsilyl) borate as an electrolyte additive for high-voltage lithium-ion batteries using LiNi 1/3 Mn 1/3 Co 1/3 O 2 cathode

Cited by 38 publications

References 36 publications

Enhanced Interfacial Stability of a LiNi0.9Co0.05Mn0.05O2 Cathode by a Diboron Additive

Enhanced Interfacial Stability of a LiNi0.9Co0.05Mn0.05O2 Cathode by a Diboron Additive

Electrolyte-Additive-Driven Interfacial Engineering for High-Capacity Electrodes in Lithium-Ion Batteries: Promise and Challenges

Electrolyte Additives for Lithium Metal Anodes and Rechargeable Lithium Metal Batteries: Progress and Perspectives

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Enhanced Interfacial Stability of a LiNi_0.9Co_0.05Mn_0.05O₂ Cathode by a Diboron Additive

Enhanced Interfacial Stability of a LiNi_0.9Co_0.05Mn_0.05O₂ Cathode by a Diboron Additive