Unfortunately that's not exactly true. Aqueous sodium ion chemistries like Na-VPF and Na-tmCN are more fire-safe than lithium, but they're also not as develope

Unfortunately that's not exactly true. Aqueous sodium ion chemistries like Na-VPF and Na-tmCN are more fire-safe than lithium, but they're also not as developed/available yet. Na-NMF, which is what a random off-the-shelf sodium cell is likely to be, is actually more flammable than LiFePO4.