Topic
Rechargeable battery chemistry using sodium instead of lithium ions, offering cheaper, more abundant materials but lower energy density and more weight.
University of Limerick researchers made carbon nanofibers for sodium-ion batteries from lignosulfonate, a pulp-and-paper waste, in a water-based process. The team says the process also does without the synthetic binders and additives common in battery manufacturing.
Reality
Unigrid says it has shipped 100 sodium-ion home batteries and will reach 1,000 by year end, each priced at roughly $100 per kWh against lithium LFP's $81. Its European buyers are paying extra today for a cost advantage that has not arrived; some companies told the BBC sodium-ion might fall as low as $30 per kWh.
Reality
Southwest Research Institute has built an index that measures whether two cell chemistries can run the same duty cycle. Its first test set sodium-ion cells against the 18650 lithium-ion format used in laptops and power tools.
Reality
HiTHIUM's new 4MWh sodium-ion system promises 20,000 cycles and a 30-year design life, with first deliveries in 2027. Those two numbers only expire on the same day if the cell runs 1.83 cycles daily.
Reality
Both brokerages raised their price targets on the same fourth-quarter start-up of LFP lines replacing high-nickel capacity, though NH kept a hold rating with the stock at 162 times projected 2028 earnings.
Reality
Electrochemical strain microscopy can read probe contact as ion movement, so a KAIST team etched trenches into ion-blocking silicon to prove it. Their fix is an argon-beam polishing step, not a new microscope.
Reality
Nanjing University's cathode still holds 87.8 percent of its capacity after those 100 cycles, which is a genuine cell-level result and a very short record, and the report attaches no cost figure to the cheap-sodium case.
Reality