Nature Energy, Published online: 10 September 2026; doi:10.1038/s41560-026-02120-8

Rechargeable Li–S batteries offer high energy density but are limited by low voltage, sluggish kinetics and polysulfide shuttling. Here the authors report a chlorine-mediated Li||S2Cl2 chemistry enabling reversible three-electron sulfur redox with increased voltage and capacity.

Nature Energy, Published online: 05 August 2026; doi:10.1038/s41560-026-02125-3

The performance of perovskite/Cu(In,Ga)Se2 tandem solar cells is limited by optical and electronic losses at the interfaces between layers. By engineering two of these interfaces, Zeng, Wang, Tang et al. achieve a certified efficiency of 30.57% and improved device stability.

Nature Energy, Published online: 29 June 2026; doi:10.1038/s41560-026-02087-6

While electrochemical degradation in lithium-ion batteries is well studied, the role of stack pressure in long-term cycling remains unclear. Here the researchers use a high-precision pressure-controlled dilatometry tool to optimize stack pressure and understand how it prolongs battery lifetime.

Nature Energy, Published online: 27 May 2026; doi:10.1038/s41560-026-02078-7

Converting plastic waste into jet fuel could support aviation decarbonization, but current approaches are limited by high-pressure requirements and low efficiency. Here the authors present a tandem hydropyrolysis and vapour-phase hydrogenation strategy that uses a Ru/Co-Al oxide catalyst, achieving promising rates and yields at low pressures.