Journal: iScience

Article Title: Cryogenic electron microscopy reveals that applied pressure promotes short circuits in Li batteries

doi: 10.1016/j.isci.2021.103394

Figure Lengend Snippet: Electrochemical data for cells cycled at various applied pressures with two separator sheets Potential versus time and capacity versus cycle number data for Li versus Cu pouch cells with two sheets of Celgard 2325 separators cycled at 4 mA/cm 2 to 2 mAh/cm 2 and tested under 0 MPa (A and E), 0.01 MPa (B and F), 0.1 MPa (C and G), and 1 MPa (D and H) of pressure.

Article Snippet: A pristine, uncycled cell is shown in B with the 50 μm Li (colored green) on Cu (colored peach) laminate counter electrode on the bottom of the image, the Cu (colored peach) working electrode on the top, and with two Celgard 2325 separator sheets (colored purple) between the electrodes.

Techniques:

Journal: iScience

Article Title: Cryogenic electron microscopy reveals that applied pressure promotes short circuits in Li batteries

doi: 10.1016/j.isci.2021.103394

Figure Lengend Snippet: Coulombic efficiency data for cells cycled at various applied pressures with two separator sheets Coulombic efficiency (A) and cumulative average Coulombic efficiency (B) versus cycle number data for Li versus Cu pouch cells with two sheets of Celgard 2325 separators cycled at 4 mA/cm 2 to 2 mAh/cm 2 and tested under varied pressure.

Article Snippet: A pristine, uncycled cell is shown in B with the 50 μm Li (colored green) on Cu (colored peach) laminate counter electrode on the bottom of the image, the Cu (colored peach) working electrode on the top, and with two Celgard 2325 separator sheets (colored purple) between the electrodes.

Techniques:

Journal: iScience

Article Title: Cryogenic electron microscopy reveals that applied pressure promotes short circuits in Li batteries

doi: 10.1016/j.isci.2021.103394

Figure Lengend Snippet: Scanning electron microscopy images showing lithium morpology after one deposition step at various applied pressures Ex-situ cross-sectional cryo SEM images (top row) and plan view images after cryo Ga + FIB milling (bottom row) of working electrode samples extracted from Li versus Cu pouch cells with two Celgard 2325 separators. Images are taken after Li was electrodeposited one time on pristine Cu working electrodes at 4 mA/cm 2 to 2 mAh/cm 2 with varied pressure. The image shown for the 0 MPa sample is likely not representative of the entire sample because the thickness varies significantly with location, as is shown in Figure S10 . Scale bars are all 10 μm for the top row and 20 μm for the bottom row of images.

Article Snippet: A pristine, uncycled cell is shown in B with the 50 μm Li (colored green) on Cu (colored peach) laminate counter electrode on the bottom of the image, the Cu (colored peach) working electrode on the top, and with two Celgard 2325 separator sheets (colored purple) between the electrodes.

Techniques: Electron Microscopy, Ex Situ

Journal: iScience

Article Title: Cryogenic electron microscopy reveals that applied pressure promotes short circuits in Li batteries

doi: 10.1016/j.isci.2021.103394

Figure Lengend Snippet: Electrochemical data for cells cycled at various applied pressures with one separator sheet Potential versus time (left) and capacity versus cycle number (right) data for Li versus Cu pouch cells with only one sheet of Celgard 2325 separator (as opposed to two sheets in Figure 1 ) cycled at 4 mA/cm 2 to 2 mAh/cm 2 and tested under 0 MPa (A and E), 0.01 MPa (B and F), 0.1 MPa (C and G), and 1 MPa (D and H) of pressure.

Article Snippet: A pristine, uncycled cell is shown in B with the 50 μm Li (colored green) on Cu (colored peach) laminate counter electrode on the bottom of the image, the Cu (colored peach) working electrode on the top, and with two Celgard 2325 separator sheets (colored purple) between the electrodes.

Techniques:

Journal: iScience

Article Title: Cryogenic electron microscopy reveals that applied pressure promotes short circuits in Li batteries

doi: 10.1016/j.isci.2021.103394

Figure Lengend Snippet: Coulombic efficiency data for cells cycled at various applied pressures with one separator sheet Coulombic efficiency (A) and cumulative average Coulombic efficiency (B) versus cycle number data for Li versus Cu pouch cells with only one sheet of Celgard 2325 separator (as opposed to two sheets in Figure 2 ) cycled at 4 mA/cm 2 to 2 mAh/cm 2 and tested under varied pressure.

Article Snippet: A pristine, uncycled cell is shown in B with the 50 μm Li (colored green) on Cu (colored peach) laminate counter electrode on the bottom of the image, the Cu (colored peach) working electrode on the top, and with two Celgard 2325 separator sheets (colored purple) between the electrodes.

Techniques:

Journal: iScience

Article Title: Cryogenic electron microscopy reveals that applied pressure promotes short circuits in Li batteries

doi: 10.1016/j.isci.2021.103394

Figure Lengend Snippet: Electrochemical impedance spectroscopy data for cells cycled to various applied pressures Electrochemical impedance spectroscopy data for cells cycled at 0, 0.01, 0.1, and 1 MPa after one (left two columns), five (middle two columns), and fifty-one (right two columns) Li depositions on Cu working electrodes in Li versus Cu pouch cells with one or two sheets of Celgard 2325 separators (as shown with cartoons) cycled at 4 mA/cm 2 to 2 mAh/cm 2 .

Article Snippet: A pristine, uncycled cell is shown in B with the 50 μm Li (colored green) on Cu (colored peach) laminate counter electrode on the bottom of the image, the Cu (colored peach) working electrode on the top, and with two Celgard 2325 separator sheets (colored purple) between the electrodes.

Techniques: Impedance Spectroscopy