构建(b)星型聚合物的合成策略:Core-first和Arm-first。
TEM验证了CoNi-HCF表面约15nm左右的NiHCF包覆层,营配业管该包覆层有效降低充放电循环过程中的晶格紊乱,并抑制副反应,因此获得优异的循环稳定性。调数动专(a)Zn2+在CoHCF框架结构中可逆嵌入/脱出。
据管级Kim,Jaekook,ElectrochemicallyInducedStructuralTransformationinaγ-MnO2CathodeofaHighCapacityZinc-IonBatterySystem.ChemistryofMaterials2015,27 (10), 3609−3620.[7]YangLiu,Y.Q.,WuxingZhang,ZhenLi,XiaoJi,LingMiao,LixiaYuan,XianluoHu,YunhuiHuang,SodiumstorageinNa-richNaxFeFe(CN)6nanocubes.NanoEnergy2015,12,386–393.[8]DaweiSu,A.M.,Shi-ZhangQiao,GuoxiuWang,High-CapacityAqueousPotassium-IonBatteriesforLarge-ScaleEnergyStorage.Adv. Mater.2017,29,1604007.[9]JinpengWu,J.S.,KehuaDai,ZengqingZhuo,L.AndrewWray,GaoLiu,Zhi-xunShen,RongZeng,YuhaoLu,WanliYang,ModificationofTransition-MetalRedoxbyInterstitialWaterinHexacyanometalateElectrodesforSodium-IonBatteries.J. Am.Chem.Soc.2017,139,18358−18364.[10]WeijieLi,C.H.,WanlinWang,QingbingXia,ShuleiChou,QinfenGu,BerntJohannessen,HuaKunLiu,andShixueDou,StressDistortionRestrainttoBoosttheSodiumIonStoragePerformanceofaNovelBinaryHexacyanoferrate.Adv.EnergyMater.2019,1903006.[11]PuHu,W.P.,BoWang,DongdongXiao,UtkarshAhuja,JulienRéthoré,KaterinaE.Aifantis,Concentration-GradientPrussianBlueCathodesforNa-IonBatteries.ACSEnergyLett.2020,5,100−108.[12]JinwenYin,Y.S.,ChangLi,ChenyangFan,ShixiongSun,YiLiu,JianPeng,LiQing,andJiantaoHan,InSituSelf-AssemblyofCore–ShellMultimetalPrussianBlueAnaloguesforHigh-PerformanceSodium-IonBatteries.ChemSusChem2019,12,4786–4790.[13]WenhaoRen,M.Q.,ZixuanZhu,MengyuYan,QiLi,LeiZhang,DongnaLiu,LiqiangMai,ActivationofSodiumStorageSitesinPrussianBlueAnaloguesviaSurfaceEtching.NanoLett.2017,17,4713−4718.[14]LingboRen,J.-G.W.,HuanyanLiu,MinhuaShao,BingqingWei,Metal-organic-framework-derivedhollowpolyhedronsofprussianblueanaloguesforhighpowergrid-scaleenergystorage.ElectrochimicaActa2019,321,134671.[15]DezhiYang,J.X.,Xiao-ZhenLiao,HongWang,Yu-ShiHe,Zi-FengMa,Prussianbluewithoutcoordinatedwaterasasuperiorcathodeforsodium-ionbatteries.Chem. Commun.2015,51,8181.[16]YangTang,W.Z.,LihongXue,XuliDing,TingWang,XiaoxiaoLiu,JingLiu,XiaochengLi,YunhuiHuang,Polypyrrole-promotedsuperiorcyclabilityandratecapabilityofNaxFe[Fe(CN)6]cathodesforsodiumionbatteries.J. Mater.Chem.A2016,4,6036.[17]KeLu,B.S.,YuxinZhang,HouyiMa,JintaoZhang,Encapsulationofzinchexacyanoferratenanocubeswithmanganeseoxidenanosheetsforhighperformancerechargeablezincionbatteries.J. Mater.Chem. A2017,5,23628.[18]DapengZhang,Z.Y.,JunshuZhang,HongzhiMao,JianYang,YitaiQian,Truncatedcobalthexacyanoferratenanocubesthreadedbycarbonnanotubesasahigh-capacityandhigh-ratecathodematerialfordual-ionrechargableaqueousbatteries.JournalofPowerSources2018,399,1-7.[19]QiYang,F.M.,ZhuoxinLiu,LongtaoMa,XinliangLi,DaliangFang,ShimouChen,SuojiangZhang,andChunyiZhi,ActivatingC-CoordinatedIronofIronHexacyanoferrateforZnHybrid-IonBatterieswith10000-CycleLifespanandSuperiorRateCapability.Adv. Mater.2019,31,1901521.[20]KosukeNakamoto,R.S.,YukiSawada,MasatoIto,andShigetoOkada,Over2VAqueousSodium-IonBatterywithPrussianBlue-TypeElectrodes.SmallMethods2019,3 (1800220).[21]XianyongWu,†YunkaiXu,§,†ChongZhang,†DanielP.Leonard,†AaronMarkir,†JunLu,*,‡andXiuleiJi,ReverseDual-IonBatteryviaaZnCl2Water-in-SaltElectrolyte.J. Am.Chem.Soc.2019,141,6338−6344.[22]XianyongWu,J.J.H.,WoochulShin,LuMa,TongchaoLiu,XuanxuanBi,YifeiYuan,YitongQi,T.WesleySurta,WenxiHuang,JoergNeuefeind,TianpinWu,P.AlexGreaney,JunLu,XiuleiJi Diffusion-freeGrotthusstopochemistryforhigh-rateandlong-lifeprotonbatteries.NatureEnergy2019,4,123–130.本文由作者团队供稿。Li等[10]报道,理体理升Fe在Na1.60Mn0.833Fe0.167[Fe(CN)6]中掺杂,可降低Mn溶出和充放电过程中的结构应力 ,提高晶体热力学稳定性,因此表现出高的循环稳定性。特别的,系驱P离子与-C≡N-中的N配位,R离子与-C≡N-中的C配位组成三维框架结构。
未来的储能器件需要较高工作电压、构建较高容量、较好的循环稳定性和倍率。为了达到该目标,营配业管需要进一步开发PBAs性能优化方法。
调数动专(图15)图15 热处理得到rGO与FeHCF的复合材料RGOPC用于钠离子电池。
Liu等[7]报道,据管级采用螯合剂降低生长速度可提高Na1.7FeFe(CN)6结晶性,进而提高循环稳定性。(图片来源,理体理升ScienceBulletin) 4. 焦耳加热当电流流经导体时,会在导体上产生焦耳热,这是与感应加热类似,只是感应加热是磁产生电,电产生的热。
在基底上旋涂一层薄膜,系驱激光照射直接合成复合物(图g-h),系驱其次,激光诱导石墨烯也可以用作自支撑的基底,再一次利用激光还可在激光诱导石墨烯上负载纳米材料。图3.(a)感应加热在铜箔上制备石墨烯的光学照片、构建(b)SEM图片和(c)Raman图谱。
(d)电子束照射Mo2Ti2C3的示意图,营配业管形成的新结构:(e)氮掺杂的石墨烯薄膜和(f)钼纳米带。图4.(a)焦耳加热用于制备PtNi合金纳米颗粒的光学照片、调数动专SEM图片和TEM图片。
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