{"corpus_id":139150585,"paper_sha":"575e955e63f6cf53ac5fd30c59971e9d8f3ea408","doi":"10.1080/10667857.2018.1548115","arxiv_id":null,"pmid":null,"pmcid":null,"mag_id":2900651605,"dblp_id":null,"acl_id":null,"title":"Facile preparation of a novel composite Co-Ni(OH)2/ carbon sphere for high-performance supercapacitors","year":2018,"publication_date":"2018-11-19","venue":"Materials technology (New York, N.Y.)","journal":{"name":"Materials Technology","pages":"204 - 212","volume":"34"},"journal_issn":null,"journal_title":null,"publication_types":[],"pubmed_pub_types":null,"s2_fields_of_study":["Materials Science","Engineering"],"reference_count":43,"citation_count":21,"influential_citation_count":0,"is_open_access":false,"arxiv_categories":null,"arxiv_license":null,"arxiv_journal_ref":null,"mesh_headings":null,"chemicals":null,"comments_corrections":null,"source_flags":1,"s2_open_access_pdf_url":null,"s2_open_access_landing_url":null,"s2_open_access_license":null,"s2_open_access_status":null,"pmc_open_access_pdf_url":null,"pmc_open_access_landing_url":null,"pmc_open_access_license":null,"pmc_open_access_status":null,"unpaywall_open_access_pdf_url":null,"unpaywall_open_access_landing_url":null,"unpaywall_open_access_license":null,"unpaywall_open_access_status":null,"abstract":"ABSTRACT As an excellent electrode material for supercapacitors, it should have high capacitance like transition metal oxides and good stability like carbon materials. In this work, we reported a novel composite electrode material, Co-Ni(OH)2/carbon sphere, obtained by a solvothermal method. At first, the activated carbon spheres with an uniform size of about 4µm were synthesized, and then the sheet-like Co-Ni(OH)2 adsorbed on the cracks and outer surface of the carbon spheres to form the Co-Ni(OH)2/carbon sphere composite. The influence of mass ratio of Co-Ni(OH)2 to carbon spheres on capacitance performance was investigated. Benefitting from the unique composite structure, the synthesized Co-Ni(OH)2/carbon sphere presents a high specific capacitance up to 959.7 F/g in 6 M KOH at current density of 1 A/g. Meanwhile, the capacitance retention maintains its 75% after 3000 cycles, which is about 2.8 times higher than that of the pure Co-Ni(OH)2, indicating a good stability.","claims":[{"public_id":"cl_177b6bfe27756c57c29da039b11b4e24","status":"active","text":"The Co-Ni(OH)2/carbon sphere composite achieves a specific capacitance of 959.7 F/g in 6 M KOH at 1 A/g.","confidence":0.95,"contributors":[{"id":32,"public_id":"7c402c1b98","public_label":"뀨 (7c402c1b98)","roles":["extraction"],"url":"https://sah.borca.ai/u/7c402c1b98"},{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["review"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_177b6bfe27756c57c29da039b11b4e24"},{"public_id":"cl_7f429fb4c78c09c498c1b601efebb051","status":"active","text":"The capacitance retention of the Co-Ni(OH)2/carbon sphere composite is 75% after 3000 cycles, about 2.8 times higher than that of pure Co-Ni(OH)2.","confidence":0.95,"contributors":[{"id":32,"public_id":"7c402c1b98","public_label":"뀨 (7c402c1b98)","roles":["extraction"],"url":"https://sah.borca.ai/u/7c402c1b98"},{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous (12632b8b5f)","roles":["review"],"url":"https://sah.borca.ai/u/12632b8b5f"}],"url":"https://sah.borca.ai/claims/cl_7f429fb4c78c09c498c1b601efebb051"},{"public_id":"cl_e3056304f1c582301493a88cdc7a0fb7","status":"active","text":"The composite is prepared by a solvothermal method, first synthesizing activated carbon spheres of about 4 µm, then adsorbing sheet-like Co-Ni(OH)2 onto the cracks and outer surface of the carbon spheres.","confidence":0.9,"contributors":[{"id":32,"public_id":"7c402c1b98","public_label":"뀨 (7c402c1b98)","roles":["extraction"],"url":"https://sah.borca.ai/u/7c402c1b98"},{"id":1,"public_id":"12632b8b5f","public_label":"Anonymous 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