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Biological hydrogen storage and release through multiple cycles of bi-directional hydrogenation of CO2 to formic acid in a single process unit

Exploiting microbial organisms as catalysts to store H2 and to capture CO2 is an alternative way in contrast to (photo-/electro-) chemical conversion strategies. To date, many different chemical and biological catalysts were developed for the hydrogenation of CO2 into formic acid with the aim to store hydrogen. However, stored H2 has to be released...

The future of green energy and chemicals: Rational design of catalysis routes

As human society moves from industrial to ecological civilization, the driving force of catalysis for energy and chemicals will also evolve, from the fossil resources, such as petroleum and coal, to common dependence on sunshine, water, carbon dioxide, and fossil resources. During this development process, catalysis will continue to play a leading role....

Perovskite hetero-bilayer for efficient charge-transport-layer-free solar cells

Charge-transport-layer-free perovskite solar cells (TL-free PSCs) are promising candidates for advanced photovoltaic technologies because of their facile fabrication and low-cost potential. Although the efficiency of TL-free PSCs still lags far behind that of the conventional PSCs, this work develops an all-solution strategy for the fabrication of an...

Misreported non-aqueous reference potentials: The battery research endemic

Reliable reference potentials are crucial to the success of controlled electrochemical studies. Yet, across the field of non-aqueous battery research, sources of error are often overlooked, leading to misreported reference potentials. Through a compilation of important literature, common sources of errors such as reference electrode type and preparation,...

The demand-side resource opportunity for deep grid decarbonization

Demand-side decarbonization solutions can supplement supply-side approaches and help decarbonize grids more quickly and cost effectively. We conclude that demand can provide around 10%–30% of the resources required for deep decarbonization in domains such as energy, peak capacity, and deployed solar capacity. Careful analysis is required to explore...

Direct imaging of oxygen shifts associated with the oxygen redox of Li-rich layered oxides

Direct imaging of oxygen distortion in Li-rich metal oxides is key to understand the occurring oxygen redox reaction, whereas this is challenging for conventional atomic-resolution electron microscopy. In this work, we introduce the use of electron ptychography to achieve this and illustrate different oxygen distortions occurring in the bulk and surface...

Extraterrestrial photosynthesis by Chang’E-5 lunar soil

Chang’E-5 lunar soil was used as the lunar extraterrestrial photosynthetic catalyst for water splitting and CO2 conversion. Solar energy and water were converted into a wide range of valuable products for lunar life support, including O2, H2, CH4, and CH3OH. A “zero-energy consumption” extraterrestrial life support system was thus proposed.

Pulsatile therapy for perovskite solar cells

Perovskite solar cells suffering from degradation due to charge accumulation and ion migration are stabilized by applying electrical reverse pulses periodically during maximum power point tracking (MPPT) operation without downtime. The pulsatile therapy leads to recovery of photocurrent and photoluminescence intensity after reverse pulses, as well as...

Realistic pathways to decarbonization of building energy systems

Electrification is an increasingly discussed method to achieve decarbonization; however, with current electrical grid capacity and makeup, electrification without a significant increase in renewable generation will fail to decrease emissions to the required levels to limit global warming. By supplying thermal end uses with nonelectric decarbonization...

Rational selection of the polymeric structure for interface engineering of perovskite solar cells

High power conversion efficiency (PCE) and operational stability are needed for the widespread application of perovskite solar cells (PSCs). Here, the design rules for selecting a polymer based on the molecular-level consideration are provided. The prototypical PSCs treated with the optimal polymeric passivation exhibited superior performance (PCE =...

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