本发明涉及一种还原氧化石墨烯/碳包覆/磷酸铁锂复合材料的制备方法，包括以下步骤：将膨胀石墨通过Hummers法制备氧化石墨烯分散液；在氧化石墨烯分散液中依次加入抗坏血酸、碳酸锂和磷酸铁，充分混合研磨，喷雾干燥，得到混合粉体；将混合干粉在通有惰性气体的管式气氛炉中进行阶段升温烧结，得到还原氧化石墨烯/碳包覆/磷酸铁锂复合材料；本发明方法简单，烧结料可直接作为正极材料应用于锂离子电池，在烧结过程中高温直接将氧化石墨烯热还原成还原氧化石墨烯，无需添加还原剂；本发明方法制备的还原氧化石墨烯/碳包覆/磷酸铁锂复合材料具有较高的电导率、锂离子扩散速率以及优异的倍率性能(3C放电比容量达到151 mAh g‑1)。
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[ DB ] CONNECT:[ UseTime:0.001486s ] mysql:host=pc-m5epcw1px949b110u.rwlb.rds.aliyuncs.com;port=3306;dbname=yousedb;charset=utf8
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[ SQL ] SHOW COLUMNS FROM `tb_tech` [ RunTime:0.001201s ]
[ SQL ] UPDATE `tb_tech` SET `hit`=`hit`+1 WHERE `id` = 459079 [ RunTime:0.001194s ]
[ SQL ] SELECT * FROM `tb_tech` WHERE `id` = 459079 LIMIT 1 [ RunTime:0.000946s ]
[ SQL ] SHOW COLUMNS FROM `tb_admin` [ RunTime:0.001179s ]
[ SQL ] SELECT `realname` FROM `tb_admin` WHERE `id` = 1 LIMIT 1 [ RunTime:0.000743s ]
[ SQL ] SHOW COLUMNS FROM `tb_category` [ RunTime:0.001004s ]
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[ SQL ] SHOW COLUMNS FROM `tb_anchor` [ RunTime:0.000994s ]
[ SQL ] SELECT * FROM `tb_anchor` ORDER BY `id` ASC [ RunTime:0.002839s ]
[ SQL ] SELECT `id`,`title` FROM `tb_tech` WHERE `id` > 459079 AND `check_status` = 1 AND `category_id` = 141 ORDER BY `submit_date` ASC LIMIT 1 [ RunTime:0.004646s ]
[ SQL ] SELECT `id`,`title` FROM `tb_tech` WHERE `id` < 459079 AND `check_status` = 1 AND `category_id` = 141 ORDER BY `submit_date` DESC LIMIT 1 [ RunTime:0.113593s ]
[ SQL ] SHOW COLUMNS FROM `tb_mcc` [ RunTime:0.001192s ]
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[ SQL ] SHOW COLUMNS FROM `tb_industry_report` [ RunTime:0.001291s ]
[ SQL ] SELECT `id`,`cate_aid`,`cate_bid`,`title`,`pic`,`tag`,`price`,`hit`,`mode` FROM `tb_industry_report` [ RunTime:0.001154s ]
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[ SQL ] SELECT * FROM `tb_category` WHERE `pid` = 41 ORDER BY `sortid` ASC [ RunTime:0.000969s ]
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