High energy density lithium-ion pouch cell with modified high voltage lithium cobalt oxide cathode and graphite anode: Prototype stabilization, electrochemical and thermal study

Mishra, Govind Kumar; Gautam, Manoj; Bhawana, K.; Ghosh, Jit; Mitra, Sagar

doi:10.1016/j.jpowsour.2023.233395

Cited by 8 publications

(2 citation statements)

References 31 publications

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“…The cathode slurry was composed of LCMO@LCO, super P, and PVDF in NMP solvent. [25] The cell was cycled at 0.1 C and then at 0.5 C at 25 °C operating conditions. The mass loading of cathode active material was 3.61 mg/cm 2 .…”

Section: Chemical and Electrochemical Stability Of Cgpe Against Limet...mentioning

confidence: 99%

Controlling the Potential of Affordable Quasi‐Solid Composite Gel Polymer Electrolytes for High‐Voltage Lithium‐Ion Batteries

Kumar Mishra,

Gautam,

Bhawana

et al. 2024

Batteries & Supercaps

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This study focuses on the development of a composite gel polymer electrolyte membrane (CGPEM) as a solution to address safety concerns arising from the reactivity of lithium metal and the formation of dendrites. The CGPEM integrates a solid polymer matrix, solid‐electrolyte LSiPS (Li10SiP2S12), with a plasticizer that countering the performance decline caused by sulfide solid electrolyte (SSE) interactions with the cathode. Poly ethylene oxide (PEO) emerges as a promising polymer matrix due to its flexibility, cost‐effectiveness, eco‐friendliness, solvability for Li‐salt, mechanical processing adaptability, adhesive strength, and ionic conductivity. Conductivity and processability of CGPEM were optimized through meticulous adjustment of liquid plasticizer concentration. The CGPEM's chemical and electrochemical stability were systematically investigated using in‐situ electrochemical impedance spectroscopy (EIS) and distribution of relaxation times (DRTs). A lithium metal battery is constructed against a high voltage cathode and newly developed CGPEM. Impressively, the cell exhibited outstanding performance, maintaining a discharge capacity of around 146.22 mAh/g after 200 cycles, retaining 86.38% of its initial capacity. The formation of a LiF‐rich interface layer near the lithium surface, a vital element in curbing CGPE degradation and dendritic growth, resulted in enhanced overall cell performance.

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Section: Chemical and Electrochemical Stability Of Cgpe Against Limet...mentioning

confidence: 99%

Controlling the Potential of Affordable Quasi‐Solid Composite Gel Polymer Electrolytes for High‐Voltage Lithium‐Ion Batteries

Kumar Mishra,

Gautam,

Bhawana

et al. 2024

Batteries & Supercaps

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“…Advanced lithium-ion batteries (ALIBs) intended to use siliconbased anode instead of graphite to achieve high energy density battery targets and avoid dendrite problems. [1][2][3][4][5][6][7] However, the commercial viability of Si anodes in full-cell systems is restricted by its first cycle irreversible capacity loss (ICL), [8][9][10][11] volume expansion (∼280%-300%), 12 and unstable solid electrolyte interface (SEI) growth which leads to inferior electrochemical performance. 6,[13][14][15][16][17][18][19][20] Additionally, during lithiation, a significant unwanted volume expansion causes pulverization and a loss of electronic contact between particles and the current collector.…”

mentioning

confidence: 99%

Enhancing Electrochemical Stability of Silicon-Carbon and NMC based Lithium-Ion Batteries through the Synergistic Impact of Charge Balance and Direct-Contact Pre-Lithiation Strategy

Gautam,

Mishra,

Bhawana

et al. 2024

J. Electrochem. Soc.

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The commercial feasibility of silicon (Si) anodes (≥ 30 %) in full-cell systems is constrained by poor cyclic stability and capacity balancing due to continuous active lithium (Li) consumption in each cycle. We proposed a capacity balancing approach by adding additional Li at the cathode side (i.e., ratio of capacity at negative to positive electrode (N/P)~0.9) and anode side (i.e., pre-lithiated Si) before full-cell fabrication. This approach provided a capacity-balanced full-cell with 91.7 % of initial Coulombic efficiency (ICE) and stability up to 50 cycles. In-situ electrochemical impedance spectroscopy (EIS) and distribution of relaxation times (DRT) analysis have been utilized to examine the interface of bare and balanced full cells. In a large format cell, electrolyte wettability is an issue and it has been investigated even at high temperature (50°C). The post-cycle investigation also indicates the Si particles retained their integrity after cycling. A 110 mAh pouch cell has been constructed, and the pouch cell demonstrated exceptional cyclic stability up to 200 cycles, with a capacity retention of 83.2 % at a current rate of 0.1 C. These findings present a capacity balancing approach for high-loading silicon-based anodes that eventually can scale up to high-quality and long-cycle life lithium-ion batteries.

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Advancements and Challenges in the Synthesis of Oxymethylene Ethers (OMEs) as Sustainable Transportation Fuels

Geitner,

Schuett,

Zechel

et al. 2024

Chemistry A European J

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The urgent need for sustainable alternatives to fossil fuels in the transportation sector is driving research into novel energy carriers that can meet the high energy density requirements of heavy‐duty vehicles without exacerbating the climate change. This concept article examines the synthesis, mechanisms, and challenges associated with oxymethylene ethers (OMEs), a promising class of synthetic fuels potentially derived from carbon dioxide and hydrogen. We highlight the importance of OMEs in the transition towards non‐fossil energy sources due to their compatibility with the existing Diesel infrastructure and their cleaner combustion profile. The synthesis mechanisms, including the Schulz‐Flory distribution and its implications for OME chain length specificity, and the role of various catalysts and starting materials are discussed in depth. Despite advancements in the field, significant challenges remain, such as overcoming the Schulz‐Flory distribution, efficiently managing water byproducts, and improving the overall energy efficiency of the OME synthesis. Addressing these challenges is crucial for OMEs to become a viable alternative fuel, contributing to the reduction of greenhouse gas emissions and the transition to a sustainable energy future in the transportation sector.

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High energy density lithium-ion pouch cell with modified high voltage lithium cobalt oxide cathode and graphite anode: Prototype stabilization, electrochemical and thermal study

Cited by 8 publications

References 31 publications

Controlling the Potential of Affordable Quasi‐Solid Composite Gel Polymer Electrolytes for High‐Voltage Lithium‐Ion Batteries

Controlling the Potential of Affordable Quasi‐Solid Composite Gel Polymer Electrolytes for High‐Voltage Lithium‐Ion Batteries

Enhancing Electrochemical Stability of Silicon-Carbon and NMC based Lithium-Ion Batteries through the Synergistic Impact of Charge Balance and Direct-Contact Pre-Lithiation Strategy

Advancements and Challenges in the Synthesis of Oxymethylene Ethers (OMEs) as Sustainable Transportation Fuels

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