Helena Braga

Fotografia de Maria Helena Sousa Soares de Oliveira Braga

Name:	Maria Helena Sousa Soares de Oliveira Braga
Sigla:	MHB
Estado:	Active
	R-000-BMG
	0000-0003-4577-2154
	DA1D-EDD1-1470

Telf.Alt.:	22 508 1869
Voip:	3141
Extensão Telefónica:	3141
Salas:	H314

Funções

Categoria:	Professor Associado
Carreira:	Pessoal Docente de Universidades
Professional Group:	Docente
Department:	Department of Engineering Physics

Cargos

Cargo	Data de Início
Member of the Department Council Departamento de Engenharia Física	2022-11-14

Apresentação Pessoal

MatER Materials for Energy Research -NEW
BeLI-24 conference is going to be an excellent opportunity... https://projects.dii.unipd.it/beli24/invited/ in Padova, Italy

BeLI-24 will be opened by Prof. Dr. Stanley Whittingham, Nobel Laureate in Chemistry 2019, for Lithium-ion Batteries

MatER will present two posters and an invited talk, humbly with the greatest in Batteries!

CMD31 is another top conference in Condensed Matter Physics... in Braga, Portugal

MatER will humbly present three talks and an invited talk with the best of the work being done in Condensed Matter Physics!

For those who want to understand "self-charge" in colleagues' words:

We were cited by Nature, by Prof. S. Salahuddin's group: Giant energy storage and power density negative capacitance superlattices, Cheema et al., Nature, 629, pages 803–809(2024).
Our cited paper ref. 70
Braga, M. H., Oliveira, J. E., Murchison, A. J. & Goodenough, J. B. Performance of a ferroelectric glass electrolyte in a self-charging electrochemical cell with negative capacitance and resistance. Appl. Phys. Rev. 7, 011406 (2020).

Novel features on the subject, from surface switching (potential difference, temperature, and mass) to bulk harvesting and storage:
Maria Helena Braga, ChemComm (RSC), 2024 “Pioneering Investigators Collection 2024”, Energy Harnessing and Storage from Surface Switching with a Ferroelectric-Electrolyte doi: https://doi.org/10.1039/D4CC00414K
Beatriz Arouca Maia, finalist Three Minute Thesis (3MT®) at UPORTO. Good luck with the final!!

Beatriz Arouca Maia, Three Minute Thesis (3MT®) at UPORTO finalist! Congratulations!

In collaboration with Prof. Leon Shaw and Prof. Carlo Segre, Illinois Institute of Technology, IL, USA,

Junquan Ou, Vignyatha Tatagari, Ishani Senevirathna, Sudarshan Luitel, Carlo Segre, Leon Shaw, M. Helena Braga, J. Power Sources, 609 (2024) 234685 On the Formation and Properties of Amorphous and Crystalline Li_3-yBa_y/2OCl Electrolytes https://doi.org/10.1016/j.jpowsour.2024.234685

In collaboration with Prof. Volnei Tita's group (USP, Brazil and FEUP) the first piezoelectric study on our cells!

B. Christoff, D. Marques, J. Carmo, M. H. Braga, V. Tita, Mechanical Systems and Signal Processing, On the strain-sensing capabilities of a novel all-solid-state sodium-based-electrolyte battery https://doi.org/10.1016/j.ymssp.2024.111390

Habilitation (Agregação) with unanimous jury (of eight) approval in the academic career in Portugal!

Beatriz A. Maia, Beatriz M. Gomes, A. Nuno Guerreiro, Raquel M. Santos, M. Helena Braga, Cathodes pinpoints for the next generation of energy storage devices: the LiFePO4 case study has been accepted in J. of Physics: Materials! 10.1088/2515-7639/ad218c

PULSELiON EU
Most important experience:

2008-2011 Research Scholar and Long Term Visiting Staff Member at Los Alamos National Laboratory (2008-2011).

2016-2019 Senior Research Fellow in the Materials Institute at the University of Texas at Austin, collaborating with Prof. John B. Goodenough, Nobel Prize of Chemistry 2019.

Main interests:

Her main interests include experimental and theoretical characterization of solid-state materials and devices (e.g., ferroelectrics, electrolytes, energy harvest and storage devices, and metal hydrides). Her activities include materials synthesis, characterization, and devices’ conceptualization (new architectures), assembly, and testing.

The experimental techniques she uses are electrical impedance spectroscopy, cyclic voltammetry, electrochemical cycling, ionic and electrical conductivity measurements, Differential Scanning Calorimetry, Scanning Electron Microscopy, X-ray photoelectron spectroscopy, X-ray and neutron diffraction, and spectroscopy, including Rietveld refinement and pair distribution function (PDF).

Density function theory (DFT), phonon, molecular dynamics, electrical, optical, and mechanical properties calculations, and phase diagrams assessment (using CALPHAD) are some of her theoretical simulation tools.

She is credited with having created ferroelectric-glassy electrolytes and novel device architectures.
Main recognitions:
- Scientific recognition FEUP in 2021, 2020, 2019, 2018, 2016, 2015, 2014, and 2007 for her publications and/or patents;

- 2021 BIP PROOF award (Soli@uto team) with the support of Amadeu Dias Foundation, Santander Universities, and the University of Porto to develop a commercial prototype;

- 2020 Award "Personality" Exame Informática - Visão - Sapo (Portuguese) with SIC (TV);

- 2014-2016 Special Visitor Researcher Grant of the CNPq (Brazilian Science Foundation);

- 2012 Luso-American Foundation (FLAD) Paper Grant to present the MRS 2012 invited talk in Boston, USA;

- 2008-2009 FCT Sabbatical fellowship;

Research

Categoria:	Membro Integrado
Research and Development Centre:	Laboratório Associado de Energia, Transportes e Aeronáutica
Interface Institute:	Instituto de Ciência e Inovação em Engenharia Mecânica e Engenharia Industrial

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