报告名称
2018年度广东省海外名师项目报告
Advanced
Characterization of Novel Battery Materials （新型电池材料的高级表征方法）
报告时间
2018年12月10日（周一）早上9：00，机电楼12C304
参加人员：研究方向相近的教师与感兴趣的学生
主办单位：人力资源处 机械工程学院
个人简介
Holger
Geßwein
Dr.
Holger Geßwein is a staff member at Institute for Applied Materials – Ceramic
Materials and Technologies (IAM-KWT), Karlsruhe Institute of Technology (KIT)
and a group Leader at Helmholtz-Institute Ulm (HIU).
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Education
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1994 - 2001
2002 - 2005
2005 - 2008
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Diploma
Degree in Mineralogy, University of Karlsruhe, Germany (now KIT)
Dissertation
in Applied Science at the Research Center Karlsruhe/University of Freiburg on
the topic “Development of Netshape Oxide Ceramics”
Postdoctoral
Researcher at University of Freiburg, IMTEK, Department of Materials Process
Technology
|
|
Professional
Career
|
2002 - 2005
2005 - 2008
since 2009
since 2011
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Research
Assistant Research Center Karlsruhe
Postdoctoral
Researcher at University of Freiburg, IMTEK, Department of Materials Process
Technology
Researcher at
KIT
Principal
Investigator Helmholtz-Institute Ulm (HIU)
|
|
Current Areas
of Research
|
· In situ investigations of
lithium-ion-batteries and nanomaterials
· Structure and chemistry
of electrode materials
· X-ray Diffraction and
Spectroscopy
|
Reiner Mönig
Dr. Reiner Mönig is a group Leader at
Institute for Applied Materials – Materials and Biomechanics (IAM-WBM),
Karlsruhe Institute of Technology (KIT) and a group Leader at
Helmholtz-Institute Ulm (HIU).
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Education
|
1990 - 1998
2000 - 2004
2004 - 2007
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Diploma Degree in Physics, University of Karlsruhe,
Germany (now KIT)
Dissertation in Materials Science at the
Max-Planck-Institute for Metals Research/University of Stuttgart on the topic
“Thermal
Fatigue of Thin Films”
Postdoctoral Researcher at Massachusetts Institute of
Technology, Department of Materials Science and Engineering
|
|
Professional Career
|
2000 - 2004
2004 - 2007
since 2007
since 2008
since 2011
since 2012
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Research Assistant Max-Planck-Institute for Metals
Research, Stuttgart
Postdoctoral Associate Massachusetts Institute of
Technology
Researcher at KIT
Group Leader of groups Nanomechanics and battery
research at IAM-WBM, KIT
Principal Investigator Helmholtz-Institute Ulm (HIU)
Topic Speaker Topic I: Metal Deposition at HIU
|
|
Current Areas of Research
|
·
In situ investigations of lithium-ion-batteries
and nanomaterials
·
Structure and chemistry of electrode
materials
·
Degradation mechanisms of lithium-ion-batteries
·
Interaction between electrochemistry and
mechanics
·
Mechanical behavior of various nanomaterials
|
报告简介
Rechargeable
batteries require reversible chemical reactions. In particular for high energy batteries,
often the poor reversibility of the electrochemical reactions at the electrodes
limit their applicability. Therefore, materials with reversible structural and
morphological changes are essential. Electrodes contain nanoscale materials
with light elements and are sensitive to humidity which makes their investigation
challenging. Our research is concerned with the investigation of electrode
materials with respect to structure, mechanics and morphology. Over the last
few years we have developed and applied a set of operando
characterization techniques that help in assessing electrode materials. We
mainly use X-ray diffraction to determine the crystal structure of electrodes,
light and electron microscopy for recording their morphology and the substrate
curvature technique for measuring mechanical loads caused by changes in volume
during electrochemical cycling. These techniques can be used on most insertion
and conversion materials (e.g. materials for lithium and sodium batteries). Our
test cells exhibit a very high reliability/reliability and our light microscopy
inside a cell is at the physical resolution limit. As an example, we will
present our recent data obtained on LiNi0.8Mn0.1Co0.1O2
that demonstrates how the different techniques can be combined to explore the
reaction pathways and degradation mechanisms in this material. Our task within
KIT is to investigate electrode materials with respect to reaction and
degradation pathways. With this knowledge we attempt to optimize the battery
materials in collaboration with synthesis and processing groups. This
collaborative approach results in optimized/tailored materials and therefore is
very promising for the development of novel batteries.
