{"id":{"repo_id":"cuny","oai_identifier":"oai:academicworks.cuny.edu:cc_etds_theses-1082"},"canonical_url":"https://search.dev.ndltd.org/etd/cuny/oai:academicworks.cuny.edu:cc_etds_theses-1082","repository":{"repo_id":"cuny","name":"City University of New York - City College","base_url":"https://academicworks.cuny.edu/do/oai/"},"display":{"title":"Life-Cycle Optimization and Flow Control in a Nickel-Zinc Flow Assisted Battery","abstract":"Nickel-Zinc flow-assisted rechargeable batteries are currently being explored as a potential new generation of large-scale, low-cost energy storage devices. The viability of a commercial nickel-zinc battery has been hindered by the well-known phenomena of dendrite formation and zinc morphology variation over time. Applying electrolyte flow to traditional nickel-zinc battery systems has demonstrated significant life cycle performance improvements by reducing both dendrite formation and morphological variation. It has also been demonstrated that periodic low-current reconditioning discharge further improves cycle life. This thesis examines the effect of eliminating electrolyte flow during discharge of nickel-zinc flow assisted batteries, which would allow a much broader range of applications for these novel batteries, particularly transportation-based applications such as electric vehicle applications. Experiments were further designed to determine the optimal periodicity for low-current reconditioning discharge, examining the effects of reconditioning after 7, 12, 20 and 30 charge-discharge cycles. The results of these experiments demonstrate that electrolyte flow during discharge does provide performance benefits, but it is possible to operate a nickel-zinc flow assisted battery without flow during discharge, when low-charge reconditioning is applied every 7 cycles. It was further found that when electrolyte is flowing continuously, nickel-zinc flow-assisted batteries can operate at high efficiency and minimal performance degradation with periodic reconditioning after 30 cycles.","abstract_html":"Nickel-Zinc flow-assisted rechargeable batteries are currently being explored as a potential new generation of large-scale, low-cost energy storage devices. The viability of a commercial nickel-zinc battery has been hindered by the well-known phenomena of dendrite formation and zinc morphology variation over time. Applying electrolyte flow to traditional nickel-zinc battery systems has demonstrated significant life cycle performance improvements by reducing both dendrite formation and morphological variation. It has also been demonstrated that periodic low-current reconditioning discharge further improves cycle life. This thesis examines the effect of eliminating electrolyte flow during discharge of nickel-zinc flow assisted batteries, which would allow a much broader range of applications for these novel batteries, particularly transportation-based applications such as electric vehicle applications. Experiments were further designed to determine the optimal periodicity for low-current reconditioning discharge, examining the effects of reconditioning after 7, 12, 20 and 30 charge-discharge cycles. The results of these experiments demonstrate that electrolyte flow during discharge does provide performance benefits, but it is possible to operate a nickel-zinc flow assisted battery without flow during discharge, when low-charge reconditioning is applied every 7 cycles. It was further found that when electrolyte is flowing continuously, nickel-zinc flow-assisted batteries can operate at high efficiency and minimal performance degradation with periodic reconditioning after 30 cycles.","abstract_has_math":false,"creators":["Lever, Steve"],"institution":null,"degree_name":"Master of Science (M.S.)","degree_level":"Thesis","degree_discipline":"Biomedical Engineering","degree_department":null,"school":null,"contributors":[],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2012,"date_issued":"2012-01-01T08:00:00Z","date_published":"2012-01-01T08:00:00Z","updated_at":"2026-07-24T01:56:34Z","subjects":["Battery","Flow","Rechargeable","Biomedical Engineering and Bioengineering","Engineering"],"languages":[],"rights":[],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"https://academicworks.cuny.edu/cc_etds_theses/83","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:creator","label":"Author","values":["Lever, Steve"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"thesis:degree_discipline","label":"Discipline","values":["Biomedical Engineering"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science (M.S.)"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Battery","Flow","Rechargeable","Biomedical Engineering and Bioengineering","Engineering"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://academicworks.cuny.edu/cc_etds_theses/83"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["Nickel-Zinc flow-assisted rechargeable batteries are currently being explored as a potential new generation of large-scale, low-cost energy storage devices. The viability of a commercial nickel-zinc battery has been hindered by the well-known phenomena of dendrite formation and zinc morphology variation over time. Applying electrolyte flow to traditional nickel-zinc battery systems has demonstrated significant life cycle performance improvements by reducing both dendrite formation and morphological variation. It has also been demonstrated that periodic low-current reconditioning discharge further improves cycle life. This thesis examines the effect of eliminating electrolyte flow during discharge of nickel-zinc flow assisted batteries, which would allow a much broader range of applications for these novel batteries, particularly transportation-based applications such as electric vehicle applications. Experiments were further designed to determine the optimal periodicity for low-current reconditioning discharge, examining the effects of reconditioning after 7, 12, 20 and 30 charge-discharge cycles. The results of these experiments demonstrate that electrolyte flow during discharge does provide performance benefits, but it is possible to operate a nickel-zinc flow assisted battery without flow during discharge, when low-charge reconditioning is applied every 7 cycles. It was further found that when electrolyte is flowing continuously, nickel-zinc flow-assisted batteries can operate at high efficiency and minimal performance degradation with periodic reconditioning after 30 cycles."]},{"key":"dc:title","label":"Title","values":["Life-Cycle Optimization and Flow Control in a Nickel-Zinc Flow Assisted Battery"]}]}],"canonical_facts":{"dc:creator":["Lever, Steve"],"dc:description.abstract":["Nickel-Zinc flow-assisted rechargeable batteries are currently being explored as a potential new generation of large-scale, low-cost energy storage devices. The viability of a commercial nickel-zinc battery has been hindered by the well-known phenomena of dendrite formation and zinc morphology variation over time. Applying electrolyte flow to traditional nickel-zinc battery systems has demonstrated significant life cycle performance improvements by reducing both dendrite formation and morphological variation. It has also been demonstrated that periodic low-current reconditioning discharge further improves cycle life. This thesis examines the effect of eliminating electrolyte flow during discharge of nickel-zinc flow assisted batteries, which would allow a much broader range of applications for these novel batteries, particularly transportation-based applications such as electric vehicle applications. Experiments were further designed to determine the optimal periodicity for low-current reconditioning discharge, examining the effects of reconditioning after 7, 12, 20 and 30 charge-discharge cycles. The results of these experiments demonstrate that electrolyte flow during discharge does provide performance benefits, but it is possible to operate a nickel-zinc flow assisted battery without flow during discharge, when low-charge reconditioning is applied every 7 cycles. It was further found that when electrolyte is flowing continuously, nickel-zinc flow-assisted batteries can operate at high efficiency and minimal performance degradation with periodic reconditioning after 30 cycles."],"dc:identifier":["https://academicworks.cuny.edu/cc_etds_theses/83"],"dc:subject":["Battery","Flow","Rechargeable","Biomedical Engineering and Bioengineering","Engineering"],"dc:title":["Life-Cycle Optimization and Flow Control in a Nickel-Zinc Flow Assisted Battery"],"thesis:degree_discipline":["Biomedical Engineering"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["Master of Science (M.S.)"]},"updated_at":"2026-07-24T01:56:34Z"}