Energy Storage Data Reporting in Perspective—Guidelines for Interpreting the Performance of Electrochemical Energy Storage Systems

Mathis, Tyler S.; Kurra, Narendra; Wang, Xuehang; Pinto, David; Simon, Patrice; Gogotsi, Yury

doi:10.1002/aenm.201902007

Energy Storage Data Reporting in Perspective—Guidelines for Interpreting the Performance of Electrochemical Energy Storage Systems

Journal Article · Tue Aug 27 00:00:00 EDT 2019 · Advanced Energy Materials

DOI:https://doi.org/10.1002/aenm.201902007· OSTI ID:1767517

^[1]; Kurra, Narendra ^[2]; Wang, Xuehang ^[2]; Pinto, David ^[2]; Simon, Patrice ^[3]; Gogotsi, Yury ^[2]

Drexel Univ., Philadelphia, PA (United States). A. J. Drexel Nanomaterials Inst.; OSTI
Drexel Univ., Philadelphia, PA (United States). A. J. Drexel Nanomaterials Inst.
Univ. Paul Sabatier, Toulouse (France)

Due to the tremendous importance of electrochemical energy storage, numerous new materials and electrode architectures for batteries and supercapacitors have emerged in recent years. Correctly characterizing these systems requires considerable time, effort, and experience to ensure proper metrics are reported. Many new nanomaterials show electrochemical behavior somewhere in between conventional double-layer capacitor and battery electrode materials, making their characterization a non-straightforward task. It is understandable that some researchers may be misinformed about how to rigorously characterize their materials and devices, which can result in inflation of their reported data. Additionally, this is not uncommon considering the current state of the field nearly requires record breaking performance for publication in high-impact journals. Incorrect characterization and data reporting misleads both the materials and device development communities, and it is the shared responsibility of the community to follow rigorous reporting methodologies to ensure published results are reliable to ensure constructive progress. This tutorial aims to clarify the main causes of inaccurate data reporting and to give examples of how researchers should proceed. The best practices for measuring and reporting metrics such as capacitance, capacity, coulombic and energy efficiencies, electrochemical impedance, and the energy and power densities of capacitive and pseudocapacitive materials are discussed.

View Accepted Manuscript (DOE)

Research Organization:: Energy Frontier Research Centers (EFRC) (United States). Fluid Interface Reactions, Structures and Transport Center (FIRST)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1767517

Alternate ID(s):: OSTI ID: 1560269

Journal Information:: Advanced Energy Materials, Journal Name: Advanced Energy Materials Journal Issue: 39 Vol. 9; ISSN 1614-6832

Publisher:: WileyCopyright Statement

Country of Publication:: United States

Language:: English

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Energy Storage Data Reporting in Perspective—Guidelines for Interpreting the Performance of Electrochemical Energy Storage Systems

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