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Record W2982514612 · doi:10.1002/batt.201900127

Na<sub>2</sub>SO<sub>4</sub>‐Polyacrylamide Electrolytes and Enabled Solid‐State Electrochemical Capacitors

2019· article· en· W2982514612 on OpenAlex
Alvin Virya, Justin Abella, Andrew Grindal, Keryn Lian

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.
fundA Canadian funder is recorded on the work.

Bibliographic record

VenueBatteries & Supercaps · 2019
Typearticle
Languageen
FieldMaterials Science
TopicSupercapacitor Materials and Fabrication
Canadian institutionsUniversity of Toronto
FundersNatural Sciences and Engineering Research Council of Canada
KeywordsElectrolyteIonic conductivityElectrochemical windowPolyacrylamideElectrochemistryConductivityMaterials scienceSupercapacitorAnalytical Chemistry (journal)CapacitanceElectrodeChemical engineeringInorganic chemistryChemistryChromatographyPolymer chemistry

Abstract

fetched live from OpenAlex

Abstract A highly ionic‐conductive and high‐performance neutral pH polymer electrolyte comprises of Na 2 SO 4 and polyacrylamide (PAM) was developed for solid electrochemical double‐layer capacitors (EDLCs). Na 2 SO 4 was compared with Li 2 SO 4 baseline in liquid electrolyte and exhibited higher ionic conductivity and identical stability window. Na 2 SO 4 −PAM electrolytes were optimized by varying their salt‐to‐polymer ratio. While all compositions show excellent stability for over 30‐day tracking period, an ionic conductivity of ca. 30 mS cm −1 was attained at 10,000 : 1 molar ratio of Na 2 SO 4 :PAM, among the highest reported for neutral pH polymer electrolytes. Raman spectroscopy verified that the electrolyte maintained well‐hydrated ions throughout the 30 days monitoring period. Solid EDLCs were constructed using activated carbon electrodes and Na 2 SO 4 −PAM electrolyte. They exhibited a wide 1.9 V operating window at 50 mV s −1 CV scan rate, with comparable capacitance to its liquid baseline. The solid EDLCs outperformed many symmetric devices in terms of energy and power densities. They also displayed good rate capability (up to 500 mV s −1 ) and excellent cycle life (&gt;8,000 cycles).

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.001
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow), Insufficient payload (model declined to judge)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.003
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0010.000
Meta-epidemiology (narrow)0.0010.001
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0000.000
Science and technology studies0.0000.001
Scholarly communication0.0010.001
Open science0.0010.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0000.001

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.005
GPT teacher head0.197
Teacher spread0.192 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it