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Volume 4 Issue 9, September 2019

Volume 4 Issue 9

Fire without smoke

In 2016, the Government of India launched a massive subsidies and small loans program to promote replacement of unclean fuels with liquefied petroleum gas. Analysing gas sales data, Kar et al. find that the program succeeded in creating rapid initial uptake but more work will be needed for rural consumers to fully transition away from the use of solid fuels.

See Kar et al.

Image: Umesh Negi / Alamy Stock Photo. Cover Design: Allen Beattie.

Editorial

  • Editorial |

    Production of fuels from water and CO2 using renewable energy could provide energy storage solutions and reduce our dependence on fossil fuels. This month, we showcase recent efforts to advance understanding in this area.

Research Highlights

News & Views

  • News & Views |

    India has distributed subsidized liquefied petroleum gas (LPG) connections to the poor at a hitherto unseen pace. However, it has been unclear whether this successfully supports a shift away from solid fuel. Research now shows that connection subsidy alone is not enough to promote sustained LPG consumption among rural poor households.

    • Ashwini Dabadge
  • News & Views |

    Ultrathin III–V solar cells are sought after for their relatively low cost and potential novel applications such as hot-carrier solar cells, but currently suffer from low power-conversion efficiency. Now, light-trapping nanostructures have been demonstrated to enable efficiency of 19.9% in a 205-nm-thick GaAs solar cell.

    • Louise Hirst
  • News & Views |

    Electrochemically reducing CO2 into value-added chemicals could contribute to CO2 recycling while storing renewable energy. However, reaction products are typically mixed with additional solutes in the liquid electrolyte. Now, a cell that uses a solid electrolyte is shown to produce pure liquid fuel solutions from CO2.

    • Raffaella Buonsanti
  • News & Views |

    Large-scale electrolytic production of hydrogen from water using renewable energy will require solutions to issues that arise when using intermittent power, such as gas mixing and low efficiency. To this end, an electrolysis system is now described that decouples the gas generation reactions and uses thermal energy to drive oxygen evolution.

    • Mark D. Symes

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