Maqola

Sieving carbons promise practical anodes with extensible low-potential plateaus for sodium batteries

Qi LiNanoyang Group, State Key Laboratory of Chemical Engineering, School of Chemical Engineering and Technology, Tianjin University , Tianjin 300072 , ChinaXiangsi LiuCollaborative Innovation Center of Chemistry for Energy MaterialsYing TaoState Key Laboratory of Chemical EngineeringJianxing HuangState Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005 , ChinaJun ZhangNanoyang Group, Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University , Fuzhou 350207 , ChinaChunpeng YangHaihe Laboratory of Sustainable Chemical Transformations , Tianjin 300192 , ChinaYibo ZhangState Key Laboratory of Chemical EngineeringSiwei ZhangTsinghua UniversityYiran JiaState Key Laboratory of Chemical EngineeringQiaowei LinTsinghua UniversityYuxuan XiangState Key Laboratory of Physical Chemistry of Solid Surfaces, Collaborative Innovation Center of Chemistry for Energy Materials and Department of Chemistry, College of Chemistry and Chemical Engineering, Xiamen University , Xiamen 361005 , ChinaJun ChengCollaborative Innovation Center of Chemistry for Energy MaterialsWei LvShenzhen Key Laboratory for Graphene-Based Materials, Engineering Laboratory for Functionalized Carbon Materials, Tsinghua Shenzhen International Graduate School, Tsinghua University , Shenzhen 518055 , ChinaFeiyu KangTsinghua UniversityYong YangCollaborative Innovation Center of Chemistry for Energy MaterialsQuan‐Hong YangNanoyang Group, Joint School of National University of Singapore and Tianjin University, International Campus of Tianjin University , Fuzhou 350207 , China

2022en

Ochiq kirishOltin

Litsenziya: cc-by

ABI

Annotatsiya

Abstract Non-graphitic carbons are promising anode candidates for sodium-ion batteries, while their variable and complicated microstructure severely limits the rational design of high-energy carbon anodes that could accelerate the commercialization of sodium-ion batteries, as is the case for graphite in lithium-ion batteries. Here, we propose sieving carbons, featuring highly tunable nanopores with tightened pore entrances, as high-energy anodes with extensible and reversible low-potential plateaus (&lt;0.1 V). It is shown that the tightened pore entrance blocks the formation of the solid electrolyte interphase inside the nanopores and enables sodium clustering to produce the plateau. Theoretical and spectroscopic studies also show that creating a larger area of sodiophilic pore surface leads to an almost linearly increased number of sodium clusters, and controlling the pore body diameter guarantees the reversibility of sodium cluster formation, producing a sieving carbon anode with a record-high plateau capacity of 400 mAh g–1. More excitingly, this approach to preparing sieving carbons has the potential to be scalable for modifying different commercial porous carbons.

Hali tarjima qilinmagan

Identifikatorlar

DOI: 10.1093/nsr/nwac084

Iqtiboslar va manbalar

2 ta iqtibos0 ta foydalanilgan manba