Halide solid-state electrolytes(HSSEs)with excellent ionic conductivity and high voltage stability are promising for all-solid-state Li-ion batteries(ASSLBs).However,they suffer from poor processability,mechanical dur...Halide solid-state electrolytes(HSSEs)with excellent ionic conductivity and high voltage stability are promising for all-solid-state Li-ion batteries(ASSLBs).However,they suffer from poor processability,mechanical durability and humidity stability,hindering their large-scale applications.Here,we introduce a dry-processing fibrillation strategy using hydrophobic polytetrafluoroethylene(PTFE)binder to encapsulate Li_(3)InCl_(6)(LIC)particles(the most representative HSSE).By manipulating the fibrillating process,only 0.5 wt%PTFE is sufficient to prepare free-standing LIC-PTFE(LIC-P)HSSEs.Additionally,LIC-P demonstrates excellent mechanical durability and humidity resistance.They can maintain their shapes after being exposed to humid atmosphere for 30 min,meanwhile still exhibit high ionic conductivity of>0.2m S/cm at 25℃.Consequently,the LIC-P-based ASSLBs deliver a high specific capacity of 126.6 m Ah/g at0.1 C and long cyclability of 200 cycles at 0.2 C.More importantly,the ASSLBs using moisture-exposed LIC-P can still operate properly by exhibiting a high capacity-retention of 87.7%after 100 cycles under0.2 C.Furthermore,for the first time,we unravel the LIC interfacial morphology evolution upon cycling because the good mechanical durability enables a facile separation of LIC-P from ASSLBs after testing.展开更多
This paper deals with the preparation of cationic starch with high degree of substitute by dry-process. The corn starch and the alkali catalyst are mixed in the mixer, then added the cationic etherifying agent (3-chlo...This paper deals with the preparation of cationic starch with high degree of substitute by dry-process. The corn starch and the alkali catalyst are mixed in the mixer, then added the cationic etherifying agent (3-chloro-2-hydroxypropyltrimethylammonium chloride). The reacting time is for 5 hours at the temperature of 70℃. The cationic starch with high degree of substitution is used as anionic charge neutralizing agents to improve filler retention in wet-end section of papermaking machine.展开更多
为提高植物乳植杆菌NXU0011(Lactobacillus plantarum NXU0011)的培养活菌密度及其冻干存活率,通过单因素试验以及响应面组合设计研究最佳培养基成分;以脱脂乳粉、菊粉、蔗糖为保护剂,考察复合保护剂对Lactoba⁃cillus plantarum NXU001...为提高植物乳植杆菌NXU0011(Lactobacillus plantarum NXU0011)的培养活菌密度及其冻干存活率,通过单因素试验以及响应面组合设计研究最佳培养基成分;以脱脂乳粉、菊粉、蔗糖为保护剂,考察复合保护剂对Lactoba⁃cillus plantarum NXU0011冻干存活率的影响。结果表明,优化后的培养基最佳组分为海藻糖浓度6.26%、胰蛋白胨浓度7.26%、KH_(2)PO_(4)/Na_(2)HPO_(4)浓度0.12 mol/L,在此条件下Lactobacillus plantarum NXU0011活菌数达9.95×10^(9) CFU/mL。冻干保护剂复配后最佳组合为脱脂乳粉添加量12.84%、菊粉添加量17.10%、蔗糖添加量5.92%,冻干后菌剂的存活率为93.42%。展开更多
基金supported by the 261 Project of MIITthe National Natural Science Foundation of China(Nos.52250010,52201242,U23A20574)the Young Elite Scientists Sponsorship Program by CAST(No.2021QNRC001)。
文摘Halide solid-state electrolytes(HSSEs)with excellent ionic conductivity and high voltage stability are promising for all-solid-state Li-ion batteries(ASSLBs).However,they suffer from poor processability,mechanical durability and humidity stability,hindering their large-scale applications.Here,we introduce a dry-processing fibrillation strategy using hydrophobic polytetrafluoroethylene(PTFE)binder to encapsulate Li_(3)InCl_(6)(LIC)particles(the most representative HSSE).By manipulating the fibrillating process,only 0.5 wt%PTFE is sufficient to prepare free-standing LIC-PTFE(LIC-P)HSSEs.Additionally,LIC-P demonstrates excellent mechanical durability and humidity resistance.They can maintain their shapes after being exposed to humid atmosphere for 30 min,meanwhile still exhibit high ionic conductivity of>0.2m S/cm at 25℃.Consequently,the LIC-P-based ASSLBs deliver a high specific capacity of 126.6 m Ah/g at0.1 C and long cyclability of 200 cycles at 0.2 C.More importantly,the ASSLBs using moisture-exposed LIC-P can still operate properly by exhibiting a high capacity-retention of 87.7%after 100 cycles under0.2 C.Furthermore,for the first time,we unravel the LIC interfacial morphology evolution upon cycling because the good mechanical durability enables a facile separation of LIC-P from ASSLBs after testing.
文摘This paper deals with the preparation of cationic starch with high degree of substitute by dry-process. The corn starch and the alkali catalyst are mixed in the mixer, then added the cationic etherifying agent (3-chloro-2-hydroxypropyltrimethylammonium chloride). The reacting time is for 5 hours at the temperature of 70℃. The cationic starch with high degree of substitution is used as anionic charge neutralizing agents to improve filler retention in wet-end section of papermaking machine.
文摘为提高植物乳植杆菌NXU0011(Lactobacillus plantarum NXU0011)的培养活菌密度及其冻干存活率,通过单因素试验以及响应面组合设计研究最佳培养基成分;以脱脂乳粉、菊粉、蔗糖为保护剂,考察复合保护剂对Lactoba⁃cillus plantarum NXU0011冻干存活率的影响。结果表明,优化后的培养基最佳组分为海藻糖浓度6.26%、胰蛋白胨浓度7.26%、KH_(2)PO_(4)/Na_(2)HPO_(4)浓度0.12 mol/L,在此条件下Lactobacillus plantarum NXU0011活菌数达9.95×10^(9) CFU/mL。冻干保护剂复配后最佳组合为脱脂乳粉添加量12.84%、菊粉添加量17.10%、蔗糖添加量5.92%,冻干后菌剂的存活率为93.42%。
