{"doi":"10.1149/1.1837571","title":"Phospho‐olivines as Positive‐Electrode Materials for Rechargeable Lithium Batteries","abstract":"Reversible extraction of lithium from (triphylite) and insertion of lithium into at 3.5 V vs. lithium at 0.05 mA/cm2 shows this material to be an excellent candidate for the cathode of a low‐power, rechargeable lithium battery that is inexpensive, nontoxic, and environmentally benign. Electrochemical extraction was limited to ∼0.6 Li/formula unit; but even with this restriction the specific capacity is 100 to 110 mAh/g. Complete extraction of lithium was performed chemically; it gave a new phase, , isostructural with heterosite, . The framework of the ordered olivine is retained with minor displacive adjustments. Nevertheless the insertion/extraction reaction proceeds via a two‐phase process, and a reversible loss in capacity with increasing current density appears to be associated with a diffusion‐limited transfer of lithium across the two‐phase interface. Electrochemical extraction of lithium from isostructural (M = Mn, Co, or Ni) with an electrolyte was not possible; but successful extraction of lithium from was accomplished with maximum oxidation of the occurring at x = 0.5. The couple was oxidized first at 3.5 V followed by oxidation of the couple at 4.1 V vs. lithium. The interactions appear to destabilize the level and stabilize the level so as to make the energy accessible.","journal":"Journal of The Electrochemical Society","year":1997,"id":6566,"datarank":27.624472847312685,"base_score":8.952864141581468,"endowment":8.952864141581468,"self_citation_contribution":1.3429296212372204,"citation_network_contribution":26.281543226075463,"self_endowment_contribution":1.3429296212372204,"citer_contribution":26.281543226075463,"corpus_percentile":97.9,"corpus_rank":1303,"citation_count":7729,"citer_count":195,"citers_with_citation_signal":195,"citers_with_endowment":195,"datacite_reuse_total":0,"is_dataset":false,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"1997-04-01","authors":[{"id":60614,"name":"K. S. Nanjundaswamy","orcid":null,"position":1,"is_corresponding":false},{"id":60616,"name":"K.S. Nanjundaswamy","orcid":null,"position":3,"is_corresponding":false},{"id":54689,"name":"John B. Goodenough","orcid":"0000-0001-9350-3034","position":4,"is_corresponding":false},{"id":60613,"name":"A. K. Padhi","orcid":null,"position":0,"is_corresponding":true}],"reference_count":0,"raw_metadata":{"citation_network_status":"fetched"},"created_at":"2026-03-01T18:20:47.508186Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}