{"schema_version":1,"experiment_id":"eoa_inverse_innovation_exp09_archetype_breadth150_20260804","research_id":"eoa_inverse_innovation_exp09_light_prior_art_20260804","cell_id":"negative_space_design__chemistry_materials","search_lanes":{"direct_problem_and_intervention":{"queries":["thick battery electrode laser structured channels electrolyte transport primary research","battery electrode microchannels electrolyte wetting thick electrode laser ablation","thick battery electrode patterned coating omitted lanes channels"],"source_ids":["SRC1","SRC2","SRC4"],"no_result_note":null},"synonyms_and_historical_terms":{"queries":["aligned pores low tortuosity thick battery electrodes primary research","electrolyte-filled macropores embedded microporous electrode spacing","bi-tortuous anisotropic graphite anode fast ion transport"],"source_ids":["SRC1","SRC2","SRC3"],"no_result_note":null},"products_practices_and_standards":{"queries":["Fraunhofer laser structuring battery electrodes channels electrolyte","battery electrode laser structuring standard safety electrode channels IEC ASTM","battery electrode laser structuring commercial technology electrolyte channels"],"source_ids":["SRC2","SRC4"],"no_result_note":"No electrode-architecture-specific standard was identified in the bounded search; retained sources instead document research practice and a first-party scalable laser-channel process."},"component_combination":{"queries":["active material omitted lanes electrolyte filled corridors electrode ribs","sacrificial template vertical channels battery electrode calendering","through thickness macrochannels thick electrode calendering","patterned thick electrode matched loading electrochemical performance channels"],"source_ids":["SRC1","SRC2","SRC3","SRC4"],"no_result_note":null}},"sources":[{"source_id":"SRC1","title":"Design of bi-tortuous, anisotropic graphite anodes for fast ion-transport in Li-ion batteries","publisher":"University of Illinois Urbana-Champaign / Journal of The Electrochemical Society","url":"https://experts.illinois.edu/en/publications/design-of-bi-tortuous-anisotropic-graphite-anodes-for-fast-ion-tr/","source_type":"PRIMARY_RESEARCH","claims_supported":["A 2015 porous-electrode model expressly proposed electrolyte-filled macropores embedded in a microporous graphite electrode.","The study compared structured and homogeneous electrodes at equal average porosity and predicted up to twice the discharge capacity.","Macropore volume fraction, spacing relative to electrode thickness, cycling rate, thickness, and active-material loading were explicit design variables."]},{"source_id":"SRC2","title":"Fabrication of low-tortuosity thick electrodes with low material loss by temporally shaped ultraviolet femtosecond laser","publisher":"Nature Communications / Springer Nature","url":"https://www.nature.com/articles/s41467-025-67702-8","source_type":"PRIMARY_RESEARCH","claims_supported":["High-density through-hole arrays were fabricated in thick LFP and NMC electrodes to create preferential electrolyte-phase transport paths.","Unstructured thick electrodes developed electrolyte concentration gradients and localized depletion, whereas structured electrodes maintained more uniform concentration and reaction activity.","The through-holes reduced measured tortuosity by about 20 percent and improved rate performance relative to unstructured controls.","The paper identifies material loss, thermal or stress damage, hole diameter, spacing, depth, and compatibility with calendering as relevant constraints."]},{"source_id":"SRC3","title":"Pore Alignment Impacts on Lithium Ion Transport and Rate Capability of Thick Sintered Electrodes","publisher":"National Institute of Standards and Technology","url":"https://www.nist.gov/publications/pore-alignment-impacts-lithium-ion-transport-and-rate-capability-thick-sintered","source_type":"PRIMARY_RESEARCH","claims_supported":["Restricted lithium-ion transport through thick porous electrodes limits high-rate charge and discharge.","At matched pore volume, directionally aligned pores produced greater high-rate capacity than stochastic pores formed with sacrificial particles.","Modeling and neutron imaging supported reduced tortuosity and improved electrolyte-phase transport as the mechanism."]},{"source_id":"SRC4","title":"Lasertechnik für eine energieeffiziente Herstellung und mehr Leistung von Batteriezellen","publisher":"Fraunhofer-Gesellschaft","url":"https://www.fraunhofer.de/de/presse/presseinformationen/2023/april-2023/lasertechnik-fuer-eine-energieeffiziente-herstellung-und-mehr-leistung-von-batteriezellen.html","source_type":"FIRST_PARTY_PRODUCT","claims_supported":["Fraunhofer describes intentionally ablating channel-like hole structures into battery electrodes to shorten ion paths and accelerate charging.","The source states that the basic channel process and its positive cell effect were already known.","Fraunhofer reports transferring the process toward scalable continuous manufacturing using parallel ultrashort-pulse laser processing."]}],"problem_evidence":{"status":"SUPPORTED","finding":"The problem is directly visible in the retained evidence: thick electrodes can restrict electrolyte-phase ion transport, and an unstructured thick electrode can develop steep electrolyte-concentration gradients, localized depletion, polarization, and lost high-rate utilization. Aligned or deliberately patterned paths reduce tortuosity and improve transport when ionic access is limiting.","source_ids":["SRC1","SRC2","SRC3"]},"closest_prior_art":[{"name":"Bi-tortuous electrodes with periodic electrolyte-filled macropores","source_ids":["SRC1"],"overlap":"This work already states the proposal's core architecture and mechanism: electrolyte-filled macropores embedded in microporous active material, dimensioned by pore fraction and spacing to shorten ionic paths and improve utilization at matched average porosity and loading.","remaining_difference":"It is a modeled graphite-anode design rather than the proposal's specified removable-mask coating process, protected pre-calendering lanes, coupon inspection protocol, and mechanical or separator-support guardrails."},{"name":"Laser-drilled through-hole arrays in thick LFP and NMC electrodes","source_ids":["SRC2","SRC4"],"overlap":"These are intentional, geometrically controlled, through-thickness absences of electrode solid that remain electrolyte-accessible, shorten transport paths, reduce tortuosity and concentration gradients, and improve thick-electrode rate performance. The structures are explicitly distinguished from accidental defects and have been considered for scalable processing.","remaining_difference":"They are formed by post-coating ablation rather than by omitting slurry during coating; the proposal also emphasizes lane-shaped corridors, neighboring load-bearing ribs, and protection against closure during later processing."},{"name":"Ice-templated directionally porous thick electrodes","source_ids":["SRC3"],"overlap":"Aligned electrolyte pathways improve high-rate transport relative to stochastic pores at matched pore volume, supporting the spatial-placement mechanism rather than a mere uniform porosity increase.","remaining_difference":"Directional templating distributes aligned pores through a sintered active-material pellet rather than creating periodic, fully bounded coating-free lanes in a conventional binder-containing electrode."}],"prior_art_disposition":"SUBSTANTIAL_COLLISION","contrastive_claim_remaining":"A narrower testable claim remains: at matched chemistry, footprint, active mass, overall thickness, compression and open-channel volume, corridors formed by deliberate coating omission and preserved through drying and calendering produce better wetting, through-thickness utilization, adhesion or separator support than both a continuous electrode and geometrically comparable post-coating laser-drilled channels. The broader claim that spatially concentrated, connected empty volume improves ionic access over homogeneous porosity is already disclosed.","contrastive_claim_falsifier":"The narrowed claim is falsified if omission-formed corridors close, remain dry or damage cohesion, or if their ionic resistance, pulse polarization, spatial utilization, adhesion and separator-support results are no better than the continuous control or geometrically matched laser-structured comparator after accounting for active mass, thickness, porosity, compression, contact resistance and electronic conductivity.","gates":{"adequate_source_search":{"status":"PASS","rationale":"The bounded search covered direct wording, older low-tortuosity and bi-tortuous terminology, research and scalable manufacturing practices, standards, and combinations involving aligned pores, templates, calendering and patterned channels. Exactly four opened sources from four publisher organizations were retained, including three primary-research sources and one first-party source.","source_ids":["SRC1","SRC2","SRC3","SRC4"]},"supported_problem":{"status":"PASS","rationale":"Primary evidence supports electrolyte-phase transport restriction in thick electrodes, including concentration gradients, localized depletion and impaired high-rate utilization.","source_ids":["SRC1","SRC2","SRC3"]},"distinct_testable_claim":{"status":"PASS","rationale":"Although the broad architectural mechanism collides with prior art, the narrower comparison of coating-omission corridors against geometrically matched post-coating channels is distinct and falsifiable through structural, transport and mechanical measurements.","source_ids":["SRC1","SRC2","SRC4"]},"bounded_next_test":{"status":"PASS","rationale":"Small coupons from one approved slurry batch can be divided among continuous, omission-patterned and, where separately authorized, geometrically matched laser-patterned arms. Preassembly imaging and wetting verification followed by one contained pulse protocol, impedance, a spatial utilization indicator, adhesion inspection and explicit halt criteria provide a bounded screen. Mass matching must be documented because corridor formation otherwise reduces active material.","source_ids":["SRC1","SRC2","SRC3"]},"no_obvious_safety_or_authority_stop":{"status":"PASS","rationale":"The proposed masking-based first step uses approved chemistry, removable laboratory coupons, preassembly inspection, standard contained cells and reviewer veto authority. Known concerns—delamination, loose particles, dry voids, inadequate separator support and process damage—are inspectable halt conditions. Any laser comparator would require separate institutional laser authorization, but it is not necessary to fabricate the initial omission-patterned coupons.","source_ids":["SRC2","SRC4"]}},"screen_survival":false,"world_novelty_boundary":"This four-source bounded screen cannot establish world novelty, patentability, market size, expert acceptance or realized value. It finds a substantial collision between the proposal's central architectural mechanism and published bi-tortuous, aligned-pore and laser-channel electrode work. Unsearched patents, non-English literature, proprietary coating methods, conference proceedings and additional templated, embossed or printed electrode architectures could further narrow or eliminate the remaining manufacturing-route claim."}