The successful candidate will perform research to understand the relationships between interfacial structure and ion transport in solid-state batteries (e.g., Na, Zn). The candidate, located in the Interfacial Processes Group (Chemical Sciences and Engineering Division), will use a combination of synchrotron X-ray based tools (e.g., X-ray reflectivity, tomographic imaging, x-ray diffraction, spectroscopy) and in-house capabilities (e.g., scanning probe microscopy, optical holographic imaging, scanning electron microscopy). The work involves designing and performing experiments, interpretation and analysis of experimental data, and the presentation of results at scientific conferences and in the peer-reviewed literature. **Position Requirements** + This level of knowledge is typically achieved through a formal education in physics, materials science, or chemistry, at the Ph.D. degree level (with a concentration in areas such as X-ray science or interfacial science), with zero to five years of experience or equivalent in the scientific application of this knowledge and practical laboratory experience + Considerable knowledge of energy storage systems, experience with in-situ and operando studies, sample synthesis and preparation, and programming for data analysis + Good skills in oral and written communication with a record of publication and external recognition + Experience with synchrotron x-ray based measurements to probe structure and reactivity (e.g., X-ray reflectivity, X-ray imaging) is desired + Ability to work interactively, productively, and independently in a multidisciplinary environment and within a multi-institution collaboration + This position may require travel for work at out-of-state synchrotron facilities when needed + Ability to model Argonne’s Core Values: Impact, Safety, Respect, Integrity, and Teamwork **Job Family** Postdoctoral Family **Job Profile** Postdoctoral Appointee **Worker Type** Long-Term (Fixed Term) **Time Type** Full time _As an equal employment opportunity and affirmative action employer, and in accordance with our core values of impact, safety, respect, integrity and teamwork, Argonne National Laboratory is committed to a diverse and inclusive workplace that fosters collaborative scientific discovery and innovation. In support of this commitment, Argonne encourages minorities, women, veterans and individuals with disabilities to apply for employment. Argonne considers all qualified applicants for employment without regard to age, ancestry, citizenship status, color, disability, gender, gender identity, gender expression, genetic information, marital status, national origin, pregnancy, race, religion, sexual orientation, veteran status or any other characteristic protected by law._ _Argonne employees, and certain guest researchers and contractors, are subject to particular restrictions related to participation in Foreign Government Sponsored or Affiliated Activities, as defined and detailed in United States Department of Energy Order 486.1A. You will be asked to disclose any such participation in the application phase for review by Argonne's Legal Department._ _All Argonne offers of employment are contingent upon a background check that includes an assessment of criminal conviction history conducted on an individualized and case-by-case basis. Please be advised that Argonne positions require upon hire (or may require in the future) for the individual be to obtain a government access authorization that involves additional background check requirements. Failure to obtain or maintain such government access authorization could result in the withdrawal of a job offer or future termination of employment._