Intermediate energy storage device
The anode raw precursor mixture was ball-milled in isopropanol with 3 mm YSZ beads for 48 h, followed by drying on a magnetically stirred hot plate at 250 °C. After drying, the dry powder was ball-milled without ad.
The conductivities of BCZYYb and BZY20 electrolyte bars, shown in Supplementary Fig. 1.
Several cells were tested in this work; more details are provided in Supplementary Table 2. Cell nos. 1, 3, 7, 8, 11, 12, 14, 16 and 17 were tested by the following method. Ultrahig.
There are two reasons for choosing UHP argon as the sweep gas rather than diluted (for example, 5%) hydrogen. First, if the sweep gas contains H2, this can make it difficult to accurat.
Cell no. 2 and no. 4 were tested by the following method. After testing the RePCECs in PCEC mode, the negative electrode gas inlet was switched to hydrogen and th.
Reversible RePCEC (cell no. 9, cell no. 10) testing was accomplished by switching between charging and discharging mode with a corresponding change in the gas compositions sup.
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