Mechanical Damage of Surface Films and Failure of Nano-Sized Silicon Electrodes in Lithium Ion Batteries

2016 ◽  
Vol 164 (1) ◽  
pp. A6103-A6109 ◽  
Author(s):  
Jae Gil Lee ◽  
Jongjung Kim ◽  
Jeong Beom Lee ◽  
Hosang Park ◽  
Hyun-Seung Kim ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Mechanical Damage ◽  
Lithium Ion ◽  
Surface Films

scholarly journals Electrical Response of Mechanically Damaged Lithium-Ion Batteries

Energies ◽  
2020 ◽  
Vol 13 (17) ◽  
pp. 4284
Author(s):  
Damoon Soudbakhsh ◽  
Mehdi Gilaki ◽  
William Lynch ◽  
Peilin Zhang ◽  
Taeyoung Choi ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Electrochemical Impedance ◽  
Electrical Response ◽  
Mechanical Damage ◽  
Lithium Ion ◽  
High Energy ◽  
High Energy Density ◽  
Battery Management System ◽  
Battery Cell ◽  
Cell Parameters

Lithium-ion batteries have found various modern applications due to their high energy density, long cycle life, and low self-discharge. However, increased use of these batteries has been accompanied by an increase in safety concerns, such as spontaneous fires or explosions due to impact or indentation. Mechanical damage to a battery cell is often enough reason to discard it. However, if an Electric Vehicle is involved in a crash, there is no means to visually inspect all the cells inside a pack, sometimes consisting of thousands of cells. Furthermore, there is no documented report on how mechanical damage may change the electrical response of a cell, which in turn can be used to detect damaged cells by the battery management system (BMS). In this research, we investigated the effects of mechanical deformation on electrical responses of Lithium-ion cells to understand what parameters in electrical response can be used to detect damage where cells cannot be visually inspected. We used charge-discharge cycling data, capacity fade measurement, and Electrochemical Impedance Spectroscopy (EIS) in combination with advanced modeling techniques. Our results indicate that many cell parameters may remain unchanged under moderate indentation, which makes detection of a damaged cell a challenging task for the battery pack and BMS designers.

Influence of Manganese Dissolution on the Degradation of Surface Films on Edge Plane Graphite Negative-Electrodes in Lithium-Ion Batteries

2012 ◽  
Vol 159 (7) ◽  
pp. A961-A966 ◽  
Author(s):  
Manabu Ochida ◽  
Yasuhiro Domi ◽  
Takayuki Doi ◽  
Shigetaka Tsubouchi ◽  
Hiroe Nakagawa ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Surface Films ◽  
Negative Electrodes

Ion Association and Electrolyte Structure at Surface Films in Lithium-Ion Batteries

2021 ◽  
Vol 125 (13) ◽  
pp. 7054-7066
Author(s):  
Justin R. Pinca ◽  
William G. Duborg ◽  
Ryan Jorn
Keyword(s):  
Lithium Ion Batteries ◽  
Lithium Ion ◽  
Ion Association ◽  
Surface Films

scholarly journals Eco-Friendly Water-Processable Polyimide Binders with High Adhesion to Silicon Anodes for Lithium-Ion Batteries

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3164
Author(s):  
Yujin So ◽  
Hyeon-Su Bae ◽  
Yi Young Kang ◽  
Ji Yun Chung ◽  
No Kyun Park ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
High Capacity ◽  
Mechanical Damage ◽  
Lithium Ion ◽  
Amic Acid ◽  
Water Soluble ◽  
Volume Changes ◽  
High Adhesion ◽  
Low Temperature Processing ◽  
One Step

Silicon is an attractive anode material for lithium-ion batteries (LIBs) because of its natural abundance and excellent theoretical energy density. However, Si-based electrodes are difficult to commercialize because of their significant volume changes during lithiation that can result in mechanical damage. To overcome this limitation, we synthesized an eco-friendly water-soluble polyimide (W-PI) precursor, poly(amic acid) salt (W-PAmAS), as a binder for Si anodes via a simple one-step process using water as a solvent. Using the W-PAmAS binder, a composite Si electrode was achieved by low-temperature processing at 150 °C. The adhesion between the electrode components was further enhanced by introducing 3,5-diaminobenzoic acid, which contains free carboxylic acid (–COOH) groups in the W-PAmAS backbone. The –COOH of the W-PI binder chemically interacts with the surface of Si nanoparticles (SiNPs) by forming ester bonds, which efficiently bond the SiNPs, even during severe volume changes. The Si anode with W-PI binder showed improved electrochemical performance with a high capacity of 2061 mAh g−1 and excellent cyclability of 1883 mAh g−1 after 200 cycles at 1200 mA g−1. Therefore, W-PI can be used as a highly effective polymeric binder in Si-based high-capacity LIBs.

scholarly journals Investigation of Internal Short Circuits of Lithium-Ion Batteries under Mechanical Abusive Conditions

Energies ◽  
2019 ◽  
Vol 12 (10) ◽  
pp. 1885 ◽  
Author(s):  
Sheng Yang ◽  
Wenwei Wang ◽  
Cheng Lin ◽  
Weixiang Shen ◽  
Yiding Li
Keyword(s):  
Lithium Ion Batteries ◽  
Short Circuit ◽  
Mechanical Damage ◽  
Lithium Ion ◽  
Critical Factor ◽  
Current Collector ◽  
Damage Process ◽  
Internal Short Circuit ◽  
Short Circuits ◽  
Simulation Results

Current studies on the mechanical abuse of lithium-ion batteries usually focus on the mechanical damage process of batteries inside a jelly roll. In contrast, this paper investigates the internal short circuits inside batteries. Experimental results of voltage and temperature responses of lithium-ion batteries showed that battery internal short circuits evolve from a soft internal short circuit to a hard internal short circuit, as battery deformation continues. We utilized an improved coupled electrochemical-electric-thermal model to further analyze the battery thermal responses under different conditions of internal short circuit. Experimental and simulation results indicated that the state of charge of Li-ion batteries is a critical factor in determining the intensities of the soft short-circuit response and hard short-circuit response, especially when the resistance of the internal short circuit decreases to a substantially low level. Simulation results further revealed that the material properties of the short circuit object have a significant impact on the thermal responses and that an appropriate increase in the adhesion strength between the aluminum current collector and the positive electrode can improve battery safety under mechanical abusive conditions.

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