Advanced Battery Separator Engineer
Asahi Kasei

Job Info

At Asahi Kasei we believe anyone can buy equipment or build a facility. It is our diverse team members around the globe who will enable us to develop ideas and technologies and capture the exciting opportunities that lie ahead. We look for candidates with a fresh perspective, people with a wide variety of skills who are creative thinkers, enjoy challenges and are driven to excel.

We are currently seeking applications to fill the following job opening at Celgard where we develop and manufacture membrane battery separators that are critical components used in lithium-ion batteries for electric drive vehicles (EDVs) and energy storage systems (ESS).

Celgard, LLC

Job Description:

We are looking for an Advanced Battery Separator Engineer to join our team in Charlotte, NC, that specializes in the development of next generation battery separators. Primary job responsibilities include screening and defining advanced separators for the development and qualification of next generation products in accordance with Celgard's technology roadmap.

Primary Responsibilities

  • Develops and implements strategies for material characterizations projects related to polymer selection and polymer process design.
  • Uses a working knowledge of polymer science and lithium batteries to predict and demonstrate value of advanced separator concepts.
  • Uses statistical tools to evaluate effect of separator and cell treatment processes on cell performance.
  • Use advanced materials characterization tools such as SEM, NMR, etc... to troubleshoot and determine next development steps.
  • Engage with global teams to support customer requests related to product development and production quality issues.
  • Working knowledge of lithium batteries and materials for creating improvements in high energy cells as well as update R&D management team on research and industry developments.
  • Interacts with laboratory technicians, scientists, and engineers to ensure testing tasks are completed within the agreed upon timeframe.
  • Systematically reviews prior art and peer-reviewed publications for relevant information.
  • Actively engages in intellectual property development.
  • Ideally brings first-hand knowledge of lithium battery materials development.
  • Present supporting findings at battery and materials conferences.

Specific Skills/Abilities
  • Fundamental understanding of advanced lithium-ion battery technology with a focus on separator composition and structure.
  • Advanced understanding of polymer science and polymer characterization techniques.
  • Demonstrates independent and creative thinking as well as complex problem solving.
  • Working knowledge of electrochemical techniques such as cyclic voltammetry, electrochemical impedance spectroscopy, and common potentiostatic and galvanostatic methods.
  • Proficiency in data analysis and experimental design utilizing Minitab and/or other software preferred.
  • Advanced written communication skills applied directly to the preparation of technical papers, patent specifications or presentations.
  • Excellent oral communications skills and interface effectively with co-workers especially from Asia region (Japan, China, Korea).

  • Ph.D. in Materials Science or Chemical Engineering with knowledge of lithium batteries required.
  • 1-3 years of working experience of Lithium Battery Designs and Mass Production in a leading battery manufacturer preferred.
  • Fluent in English, knowledge of either Chinese or Japanese preferred, but not required.


We believe a diverse workforce is crucial to our growth as a global supplier of advanced materials. Asahi Kasei is an equal opportunity employer.

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