采用熔体快淬法制备了Fe_(80.8)Si_(7.2)B_6Nb_5Cu非晶条带,然后经过退火、研磨、成型、退火等一系列的处理,得到了结构致密的非晶纳米晶双相磁粉芯。研究了不同条件下磁粉芯的微观形貌、磁导率、功率损耗、品质因数等基本性能。研究结...采用熔体快淬法制备了Fe_(80.8)Si_(7.2)B_6Nb_5Cu非晶条带,然后经过退火、研磨、成型、退火等一系列的处理,得到了结构致密的非晶纳米晶双相磁粉芯。研究了不同条件下磁粉芯的微观形貌、磁导率、功率损耗、品质因数等基本性能。研究结果表明:Fe_(80.8)Si_(7.2)B_6Nb_5Cu非晶纳米晶双相磁粉芯具有较高磁导率(36~37),且在不同的频率和磁场下比较稳定;低频下(小于200 kHz),当磁场小于50 m T时,其功率损耗最大值仅为49.42 W/kg;同时,有着较好的品质因数。展开更多
The construction of electrode materials for lithium-ion batteries(LIBs)and sodium-ion batteries(SIBs)has gradually been an appealing and attractive technology in energy storage research field.In the present work,a fac...The construction of electrode materials for lithium-ion batteries(LIBs)and sodium-ion batteries(SIBs)has gradually been an appealing and attractive technology in energy storage research field.In the present work,a facile strategy of synthesizing ultrathin amorphous/nanocrystal dual-phase P-doped Bi_(2)MoO_(6)(denoted as P-BiMO)nanosheets via a one-step wet-chemical synthesis approach is explored.Quite distinct from conventional two-dimensional(2D)nanosheets,our newly developed ultrathin P-BiMO nanosheets exhibit a unique tunable amorphous/nanocrystalline dual-phase structure with several compelling advantages including fast ion exchange ability and superb volume change buffer capability.The experimental results reveal that our prepared P-BiMO-6 electrode delivers an excellent reversible capacity of 509.6 mA·g^(−1) after continuous 1,500 cycles at the current densities of 1,500 mA·g^(−1) and improved rate performance for LIBs.In the meanwhile,the P-BiMO-6 electrode also shows a reversible capacity of 300.6 mA·g^(−1) after 100 cycles at 50 mA·g^(−1) when being used as the SIBs electrodes.This present work uncovers an effective dual-phase nanosheet structure to improve the performance of batteries,providing an attractive paradigm to develop superior electrode materials.展开更多
文摘采用熔体快淬法制备了Fe_(80.8)Si_(7.2)B_6Nb_5Cu非晶条带,然后经过退火、研磨、成型、退火等一系列的处理,得到了结构致密的非晶纳米晶双相磁粉芯。研究了不同条件下磁粉芯的微观形貌、磁导率、功率损耗、品质因数等基本性能。研究结果表明:Fe_(80.8)Si_(7.2)B_6Nb_5Cu非晶纳米晶双相磁粉芯具有较高磁导率(36~37),且在不同的频率和磁场下比较稳定;低频下(小于200 kHz),当磁场小于50 m T时,其功率损耗最大值仅为49.42 W/kg;同时,有着较好的品质因数。
基金supported by Shenzhen-Hong Kong Science and Technology Innovation Cooperation Zone Shenzhen Park Project:HZQB-KCZYB-2020030the National Key R&D Program of China(Project No.2017YFA0204403)Hong Kong Innovation and Technology Commission via the Hong Kong Branch of National Precious Metals Material Engineering Research Center.
文摘The construction of electrode materials for lithium-ion batteries(LIBs)and sodium-ion batteries(SIBs)has gradually been an appealing and attractive technology in energy storage research field.In the present work,a facile strategy of synthesizing ultrathin amorphous/nanocrystal dual-phase P-doped Bi_(2)MoO_(6)(denoted as P-BiMO)nanosheets via a one-step wet-chemical synthesis approach is explored.Quite distinct from conventional two-dimensional(2D)nanosheets,our newly developed ultrathin P-BiMO nanosheets exhibit a unique tunable amorphous/nanocrystalline dual-phase structure with several compelling advantages including fast ion exchange ability and superb volume change buffer capability.The experimental results reveal that our prepared P-BiMO-6 electrode delivers an excellent reversible capacity of 509.6 mA·g^(−1) after continuous 1,500 cycles at the current densities of 1,500 mA·g^(−1) and improved rate performance for LIBs.In the meanwhile,the P-BiMO-6 electrode also shows a reversible capacity of 300.6 mA·g^(−1) after 100 cycles at 50 mA·g^(−1) when being used as the SIBs electrodes.This present work uncovers an effective dual-phase nanosheet structure to improve the performance of batteries,providing an attractive paradigm to develop superior electrode materials.
