本发明提供了一种片球状NaxCoO2（0xCoO2微球尺寸为2~4μm。所述的NaxCoO2片球以四水合乙酸钴、无水乙酸钠分别作为钴源和钠源，以乙二醇和乙醇为溶剂，通过水热反应和后续煅烧过程制备NaxCoO2微球。发现以700 oC煅烧制备得到的Na0.5CoO2微球具有最理想的电化学性能，同时在700 oC下高温煅烧，Na0.5CoO2依然能够片状形貌。以Na0.5CoO2为钠离子电池正极材料组装的钠离子电池在100 mA g‑1电流密度下，其初始比容量高达108.9 mAh g‑1，经过100圈充放电测试后容量几乎没有衰减。本发明为片球状NaxCoO2的制备具有重要指导作用。
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[ DB ] CONNECT:[ UseTime:0.001133s ] mysql:host=pc-m5epcw1px949b110u.rwlb.rds.aliyuncs.com;port=3306;dbname=yousedb;charset=utf8
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[ SQL ] SELECT * FROM `tb_para` WHERE `id` = 1 LIMIT 1 [ RunTime:0.006391s ]
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[ SQL ] SELECT * FROM `tb_tech` WHERE `id` = 898640 LIMIT 1 [ RunTime:0.021329s ]
[ SQL ] SHOW COLUMNS FROM `tb_admin` [ RunTime:0.000996s ]
[ SQL ] SELECT `realname` FROM `tb_admin` WHERE `id` = 1 LIMIT 1 [ RunTime:0.001664s ]
[ SQL ] SHOW COLUMNS FROM `tb_category` [ RunTime:0.000954s ]
[ SQL ] SELECT * FROM `tb_category` WHERE `id` = 147 LIMIT 1 [ RunTime:0.000744s ]
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[ SQL ] SHOW COLUMNS FROM `tb_anchor` [ RunTime:0.000973s ]
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[ SQL ] SELECT `id`,`title` FROM `tb_tech` WHERE `id` > 898640 AND `check_status` = 1 AND `category_id` = 147 ORDER BY `submit_date` ASC LIMIT 1 [ RunTime:0.008356s ]
[ SQL ] SELECT `id`,`title` FROM `tb_tech` WHERE `id` < 898640 AND `check_status` = 1 AND `category_id` = 147 ORDER BY `submit_date` DESC LIMIT 1 [ RunTime:0.007354s ]
[ SQL ] select id,title,tag,submit_date from tb_tech where check_status=1 and id<>898640 order by submit_date desc limit 10 [ RunTime:0.003495s ]
[ SQL ] SHOW COLUMNS FROM `tb_mcc` [ RunTime:0.000981s ]
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[ DB ] CONNECT:[ UseTime:0.001426s ] mysql:host=mccbfzy.mysql.polardb.rds.aliyuncs.com;port=3306;dbname=ysscdb;charset=utf8
[ SQL ] SHOW COLUMNS FROM `tb_industry_report` [ RunTime:0.001251s ]
[ SQL ] SELECT `id`,`cate_aid`,`cate_bid`,`title`,`pic`,`tag`,`price`,`hit`,`mode` FROM `tb_industry_report` [ RunTime:0.001270s ]
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[ SQL ] SELECT * FROM `tb_advert` WHERE `id` = 65 LIMIT 1 [ RunTime:0.000690s ]
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