Primary studyCore evidenceThermoelectric

Solar-driven ionic power generation: Via a film of nanocellulose @ conductive metal-organic framework

Zhou S., Qiu Z., Stromme M. et al. · Energy and Environmental Science · 2021 · 900-905

5materials
7samples
4synthesis routes
16measurements
54results
6claims and caveats

Evidence map

Open a family to keep every result attached to its sample, method and conditions.

Author interpretations and caveats

Paraphrased for this database from the authors’ stated interpretations — never quoted verbatim — and kept separate from reported measurements.

Composite RoleSupport assessment: High

Interfacial Ni-HITP growth on cellulose is superior to direct blending because direct-blended CC-Ni-HITP nanopaper has high resistance and discontinuous charged surfaces.

Caveat: Direct-blend synthesis details are vague, so exact morphology-processing differences are not fully controlled from the text.

p004 · Solar-driven ionic power generation · Fig. S12 · Linked to 3 structured results

Structure Property LinkSupport assessment: High

XPS deconvolution supports chemically bonded Ni-HITP nanolayers on cellulose via an interfacial growth approach.

Caveat: Assignment is based on XPS peak positions and comparison spectra, not direct bond imaging.

p008 · Supplementary Results · Fig. S2c · Linked to 4 structured results

Structure Property LinkSupport assessment: High

Hierarchical porosity and hybrid composition lower thermal conductivity, enabling heat localisation and a stable thermal gradient for ionic thermoelectric output.

Caveat: Thermal-conductivity calculation uses assumptions for gas mean free path and interfacial thermal resistance.

p010-p011 · Supplementary Results · Fig. S4 · Linked to 3 structured results

Structure Property LinkSupport assessment: Medium

Ni-HITP nanopores confine water clusters, reduce vaporisation enthalpy, and accelerate evaporation through the CCM film.

Caveat: Water-cluster mechanism is inferred from FTIR shifts and TGA-DSC comparisons rather than directly observed clusters.

p012-p013 · Supplementary Results · Fig. S5 · Linked to 4 structured results

Transport MechanismSupport assessment: High

Acidic or basic electrolyte dopes/charges the CCM pore surface, producing charged nanochannels that selectively transport counter-ions.

Caveat: Low-salt conductivity values are figure-axis estimates; mechanism is inferred from pH-dependent zeta potential and conductivity trends.

p003 · Charged nanochannels in the CCM film · Fig. 3 · Linked to 3 structured results

Transport MechanismSupport assessment: High

The high solar IPG voltage arises from combined streaming potential at the wet-dry interface and ionic thermoelectric voltage across the hot-cold interface.

Caveat: The one-sun ionic thermoelectric contribution is calculated from separated measurements and a voltage difference, not directly isolated during device operation.

p004-p005 · Solar-driven ionic power generation · Fig. 4; Fig. 5 · Linked to 4 structured results

Material identities

Names and aliases are kept exactly within the paper’s own identity model.

MaterialCompositionStructure contextSource
Direct-blended cellulose/Ni-HITP nanopaperBrowse family: Ni₃(HITP)₂ / Ni–HITPNi-HITP particles/cellulose compositeNi(II) in Ni-HITP particles · HITP; Cladophora cellulose2D · CompositeComposite nanopaper made by direct blending of cellulose with Ni-HITP particles; lacks continuous charged cMOF surfaces.p018 · Supplementary Results · Fig. S12
Cladophora cellulose nanofibre @ Ni-HITP conductive MOF film (CCM)Browse family: Ni₃(HITP)₂ / Ni–HITPNi-HITP/cellulose compositeNi(II) in Ni-HITP nanolayers · HITP; Cladophora cellulose nanofibres as substrate2D · CompositeCore-shell nanofibres with Ni-HITP coating Cladophora cellulose; stacked/interwoven fibres form a freestanding hierarchical porous film.p002 · Preparation and characterization of the CCM film · Fig. 1
Cladophora cellulose control filmcellulosecellulose nanofibresunknown · Model SystemPristine cellulose nanofibre film used as substrate/control for morphology, thermal-conductivity, and water-evaporation comparisons.p009 · Supplementary Results · Fig. S3
Ni-HITP conductive metal-organic frameworkBrowse family: Ni₃(HITP)₂ / Ni–HITPNi3(2,3,6,7,10,11-hexaiminotriphenylene)2Ni(II) · 2,3,6,7,10,11-hexaiminotriphenylene (HITP)2D · PristineLayered conductive MOF with ordered approximately 2 nm nanopores in a hexagonal arrangement; assigned by TEM/HRTEM and XRD reflections.p002 · Preparation and characterization of the CCM film · Fig. 1
Wood nanocellulose @ Ni-HITP filmBrowse family: Ni₃(HITP)₂ / Ni–HITPNi-HITP/wood nanocellulose compositeNi(II) in Ni-HITP · HITP; wood nanocellulose substrate2D · CompositeNi-HITP grown or deposited on wood nanocellulose; XRD and N2 sorption were reported in SI.p020 · Supplementary Results · Fig. S15

Sample register

Sample form, processing state and composition status define the context for measurements.

Show 7 sample records
SampleForm and roleProcessing and geometrySource
Pristine Cladophora cellulose filmresearch_0769__mat__cladophora_celluloseThin Film · Pristine Control · ModelPristine cellulose film before Ni-HITP growth.p009 · Supplementary Results · Fig. S3
CC-Ni-HITP nanopaperresearch_0769__mat__cc_ni_hitp_blendThin Film · Pristine Control · CompositePrepared by direct blending Cladophora cellulose with Ni-HITP particles.p018 · Supplementary Results · Fig. S12
CCM composition/thickness seriesresearch_0769__mat__ccm_filmThin Film · Target Sample · CompositeCCM films with varied thickness and Ni-HITP content.1, 2, 5, and 10 um; 17.5 wt% and 35 wt% Ni-HITPp021 · Supplementary Results · Fig. S16
U-shaped CCM solar-driven IPG deviceresearch_0769__mat__ccm_filmElectrode · Target Sample · Composite1.0 cm x 0.2 cm CCM film bent to U-shape on polystyrene foam, sealed with Ag/AgCl gel electrodes, connected to graphite paper wires, floated on 0.01 M NaCl at pH 10.polystyrene foamp005 · Proof-of-concept device · Fig. 5
Freestanding CCM filmresearch_0769__mat__ccm_filmThin Film · Target Sample · CompositeNi-HITP nanolayers grown on carboxylated Cladophora cellulose nanofibres; vacuum-filtered, washed, dried, and peeled off as a freestanding film.PVDF membrane during filtration; peeled off after drying · approximately 5 um in main text; SI also studies 1, 2, 5, and 10 um filmsp002 · Preparation and characterization of the CCM film · Fig. 1
Pure Ni-HITP referenceresearch_0769__mat__ni_hitpUnknown · Pristine Control · Pristine FrameworkPure Ni-HITP comparison used for XPS binding energy and thermal conductivity discussion.p007-p008 · Supplementary Results · Fig. S2c
WNC@Ni-HITP filmresearch_0769__mat__wnc_ni_hitpThin Film · Pristine Control · CompositeWood nanocellulose-based CCM analogue.wood nanocellulosep020 · Supplementary Results · Fig. S15