Imperial College London

DrMadeleineMorris

Faculty of Natural SciencesThe Grantham Institute for Climate Change

Research Associate (EnergyREV)
 
 
 
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Contact

 

+44 (0)20 7594 8453m.morris13

 
 
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Location

 

Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
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5 results found

Ford R, Maidment C, Vigurs C, Fell MJ, Morris Met al., 2021, Smart local energy systems (SLES): A framework for exploring transition, context, and impacts, TECHNOLOGICAL FORECASTING AND SOCIAL CHANGE, Vol: 166, ISSN: 0040-1625

Journal article

Hardy J, Morris M, Hannon M, Morstyn T, Gaura Eet al., 2020, Policy & Regulatory Landscape Review Series – Working Paper 2: Digital energy platforms, Policy & Regulatory Landscape Review Series – Working Paper 2: Digital energy platforms, Publisher: University of Strathclyde Publishing

The policy and regulatoryreview seriesAs our energy system undergoes a transition to adecarbonised, digitalised and decentralised one, itis vital that we understand how smart local energysystems (SLES) could provide a more efficient, saferand better experience all round.Our team are focused on understanding the policy,regulatory and market frameworks in which SLES inthe UK can operate optimally in the future. In orderto understand where (and whether) changes need tobe made, it is important to have a baseline of whattoday’s arrangements are.The purpose of this review series is to analyse theevidence and gaps in the policy and regulatorylandscape of today’s (smart) local energy systems inthe UK.We are conducting this review in a series of ‘sprints’each of which will have a particular focus. The firstreport, published in September 2019, was a review ofthe policy and regulation related to electricity storageand electric vehicles. The findings of this, as well asmore information about the review, can be found inour first working paper: Working Paper 1: Electricitystorage & electric vehicles. This second report focuseson digital energy platforms. The methodology usedfor this review can be found in the Appendix.

Report

Selim S, Pastor E, García-Tecedor M, Morris MR, Francas L, Sachs M, Moss B, Corby S, Mesa CA, Gimenez S, Kafizas A, Bakulin AA, Durrant JRet al., 2019, Impact of oxygen vacancy occupancy on charge carrier dynamics in BiVO4 photoanodes, Journal of the American Chemical Society, Vol: 141, Pages: 18791-18798, ISSN: 0002-7863

Oxygen vacancies are ubiquitous in metal oxides and critical to performance, yet the impact of these states upon charge carrier dynamics important for photoelectrochemical and photocatalytic applications, remains contentious and poorly understood. A key challenge is the unambiguous identification of spectroscopic fingerprints which can be used to track their function. Herein, we employ five complementary techniques to modulate the electronic occupancy of states associated with oxygen vacancies in situ in BiVO4 photoanodes, allowing us to identify a spectral signature for the ionisation of these states. We obtain an activation energy of ̴ 0.2 eV for this ionisation process, with thermally activated electron de-trapping from these states determining the kinetics of electron extraction, consistent with improved photoelectrochemical performance at higher temperatures. Bulk, un-ionised states however, function as deep hole traps, with such trapped holes being energetically unable to drive water oxidation. These observations help address recent controversies in the literature over oxygen vacancy function, providing new insights into their impact upon photoelectrochemical performance.

Journal article

Hardy J, Morris M, 2019, Policy & Regulatory Landscape Review Series - Working Paper 1: Electricity storage & electric vehicles, Publisher: University of Strathclyde Publishing

This is the first Working Paper in a series that reviewsthe current policy and regulatory landscape relatedto smart local energy systems (SLES) in the UK. Eachreview will have a particular focus; this report focuseson policy and regulation related to electricity storageand electric vehicles.Our aim is to produce useful and usable outputs toour stakeholders as soon as we have information.We’re seeking your feedback on how useful andinformative these outputs are so that we can improvefuture reports, in particular on the following:• Have we captured all the relevant information –if not, what have we missed?• How could we improve the presentation of theinformation?• How could we improve the clarity of theinformation?• What future SLES relevant topics should weprioritise?• How can we best keep these outputs live andrelevant – are you aware of approaches we coulddraw inspiration from?

Report

Morris MR, Pendlebury S, Hong J, Dunn S, Durrant Jet al., 2016, Effect of internal electric fields on charge carrier dynamics in a ferroelectric material for solar energy conversion, Advanced Materials, Vol: 28, Pages: 7123-7128, ISSN: 0935-9648

Spontaneous polarization is shown to enhance the lifetimes of photogenerated species in BaTiO3. This is attributed to polarization-induced surface band bending acting as a thermal barrier to electron/hole recombination. The study indicates that the efficiencies of solar cells and solar fuels devices can be enhanced by the use of ferroelectric materials.

Journal article

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