{"doi":"10.1002/anie.201600525","title":"Hierarchical NiCo<sub>2</sub>O<sub>4</sub> Hollow Microcuboids as Bifunctional Electrocatalysts for Overall Water‐Splitting","abstract":"<jats:title>Abstract</jats:title><jats:p>Bifunctional electrocatalysts for the oxygen evolution reaction (OER) and hydrogen evolution reaction (HER) in alkaline electrolyte may improve the efficiency of overall water splitting. Nickel cobaltite (NiCo<jats:sub>2</jats:sub>O<jats:sub>4</jats:sub>) has been considered a promising electrode material for the OER. However, NiCo<jats:sub>2</jats:sub>O<jats:sub>4</jats:sub> that can be used as an electrocatalyst in HER has not been studied yet. Herein, we report self‐assembled hierarchical NiCo<jats:sub>2</jats:sub>O<jats:sub>4</jats:sub> hollow microcuboids for overall water splitting including both the HER and OER reactions. The NiCo<jats:sub>2</jats:sub>O<jats:sub>4</jats:sub> electrode shows excellent activity toward overall water splitting, with 10 mA cm<jats:sup>−2</jats:sup> water‐splitting current reached by applying just 1.65 V and 20 mA cm<jats:sup>−2</jats:sup> by applying just 1.74 V across the two electrodes. The synthesis of NiCo<jats:sub>2</jats:sub>O<jats:sub>4</jats:sub> microflowers confirms the importance of structural features for high‐performance overall water splitting.</jats:p>","journal":"Angewandte Chemie International Edition","year":2016,"id":38403,"datarank":14.796826772270807,"base_score":6.775366090936392,"endowment":6.775366090936392,"self_citation_contribution":1.016304913640459,"citation_network_contribution":13.780521858630348,"self_endowment_contribution":1.016304913640459,"citer_contribution":13.780521858630348,"corpus_percentile":null,"corpus_rank":null,"citation_count":875,"citer_count":200,"citers_with_citation_signal":200,"citers_with_endowment":200,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":190557,"name":"Hongxiu Zhang","orcid":null,"position":1,"is_corresponding":false},{"id":190558,"name":"Quanguo Li","orcid":null,"position":2,"is_corresponding":false},{"id":190559,"name":"Xuegong Yu","orcid":null,"position":3,"is_corresponding":false},{"id":190560,"name":"Zhanglian Hong","orcid":null,"position":4,"is_corresponding":false},{"id":190561,"name":"Xingwang Zhang","orcid":null,"position":5,"is_corresponding":false},{"id":190562,"name":"Chengdu Liang","orcid":null,"position":6,"is_corresponding":false},{"id":190563,"name":"Zhan Lin","orcid":null,"position":7,"is_corresponding":false},{"id":190556,"name":"Xuehui Gao","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"base_score":6.775366090936392,"endowment":6.775366090936392,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"27061909","pmcid":null,"openalex_id":"https://openalex.org/W2325257443","authors":[],"funders":[{"funder_name":"Zhejiang Province Science Fund for Distinguished Young Scholars","grant_id":"LR16B060001","title":null},{"funder_name":"Natural Science Foundation of China","grant_id":"21522606","title":null},{"funder_name":"Chinese government","grant_id":"","title":null},{"funder_name":"Fundamental Research Funds for the Central Universities","grant_id":"","title":null}],"total_grants":4,"fwci":37.5631,"citation_percentile":0.99875691,"influential_citations":0,"citation_trend":[{"year":2015,"count":1},{"year":2016,"count":18},{"year":2017,"count":110},{"year":2018,"count":114},{"year":2019,"count":115},{"year":2020,"count":122},{"year":2021,"count":101},{"year":2022,"count":79},{"year":2023,"count":61},{"year":2024,"count":84},{"year":2025,"count":57},{"year":2026,"count":11}],"oa_status":"closed","license":"http://onlinelibrary.wiley.com/termsAndConditions#vor","oa_locations":[{"url":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fanie.201600525","host_type":"publisher"},{"url":"https://onlinelibrary.wiley.com/doi/pdf/10.1002/anie.201600525","host_type":"publisher"},{"url":"https://doi.org/10.1002/anie.201600525","host_type":"journal"},{"url":"https://pubmed.ncbi.nlm.nih.gov/27061909","host_type":"repository"}],"fields_of_study":["Electrocatalysts for Energy Conversion","Ammonia Synthesis and Nitrogen Reduction","Advanced battery technologies research","Chemistry","Medicine","Materials Science","Engineering"],"mesh_terms":[],"keywords":["Water splitting","Oxygen evolution","Bifunctional","Electrocatalyst","Cobaltite","Electrolyte","Nickel","Materials science","Electrode","Electrochemistry","Inorganic chemistry","Chemical engineering","Chemistry","Catalysis","Physical chemistry","Metallurgy","Solvothermal synthesis","Nico2o4"],"sdg_mappings":[],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-06-11T03:04:51.496972Z","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,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}