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Reference : UMR7647-COSCOJ-001
Workplace : PALAISEAU
Date of publication : Friday, June 4, 2021
Type of Contract : FTC Scientist
Contract Period : 12 months
Expected date of employment : 4 August 2021
Proportion of work : Full time
Remuneration : salary: aprox. 3881€ gross monthly
Desired level of education : PhD
Experience required : 1 to 4 years
The postdoctoral researcher position is opened in the framework of the ANR “Harvestore” project, which aims to develop an integrated system including a PZT-based energy recuperator and an energy storage device composed of a Lithium-ion battery coupled to a supercapacitor. In this multidisciplinary project team, the main mission of the recruited researcher will be focused on the development and synthesis of hybrid nanostructured electrodes for the fabrication of a new generation of lithium-ion batteries. Two main axes will be pursued: (1) synthesis of positive and negative electrodes based on carbon nanotubes decorated with nanoparticles of active material with high energy storage density, (2) evaluation of the electrochemical performance of these systems in prototype cells (button cell).
At the current development stage of the Harverstore project, the objective is the demonstration of a carbon nanomaterial-based energy storage system, composed of a battery and a supercapacitor, which takes advantage of the properties of nanomaterials and exploits nanostructuration and functionalization. A dedicated electronic circuit will allow these devices to recover and store energy from the PZT actuator in the most efficient way possible at different vibration frequencies. For the realization of the (micro) battery component, the planned activities concern:
- manufacturing of hybrid nanostructured electrodes with high energy density,
- realization of the prototype batteries (coin cell) compatible with the specifications for co-integration with the supercapacitor and the embedded electronics,
- electrochemical characterization of the prototypes and their performances optimization,
- analysis, exploitation, interpretation and validation of the results obtained,
- valorization and dissemination in publications and conferences
Given the progress of the Harverstore project, the candidate should be able to rapidly integrate in the project team and very quickly gain skills and autonomy of all the steps of manufacturing and characterization of batteries. The candidate should have a PhD in physics, electrochemistry, or materials chemistry. The position requires strong knowledge in materials synthesis, characterization, nanostructuration and electrochemistry. Expected skills are:
- Excellent (fundamental) knowledge in materials science and particularly nanomaterials,
- CVD and PVD materials elaboration techniques, vacuum techniques,
- Physico-chemical characterization techniques (TEM, SEM, Raman, ...),
- Excellent knowledge in electrochemistry, particularly in electrochemical energy storage systems,
- Excellent written and oral communication skills in English,
- Ability to work in a team, adapting to different working environments and experience in (co-)management of scientific projects.
The position is located at the Laboratory of Physics of Interfaces and Thin Films (LPICM) at Ecole Polytechnique. The LPICM is a joint research unit, UMR 7647, of the Centre National de la Recherche Scientifique (CNRS) and the Ecole Polytechnique (EP). The research activities carried out within LPICM have for common denominator nano- or micro-structures, nano-objects, thin films and interfaces. The spectrum of work carried out on these objects is very broad with activities on : (i) the design at the molecular scale of new functional structures, (ii) the design, development and implementation of physical or chemical processes aiming at the production of these molecular or nanometric structures and/or their use in the elaboration of functional materials and interfaces (iii) the development of physical, physicochemical, structural and functional characterization methods of thin films, interfaces and nanostructures, of the mechanisms involved in their formation and of the processes allowing their elaboration, (iv) the integration of the elaborated materials in functional systems and (v) the functional characterization of these systems.
Constraints and risks
work in a laboratory environment, use of reactive gases, vacuum/ultravacuum and glove boxes
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