文献类型：期刊文献

英文题名：Structure engineering and heteroatom doping-enabled high-energy and fast-charging dual-ion batteries

作者：Zhao, Chenpeng[1];Fang, Biao[1];Wang, Rui[1];Liang, Han[1];Mo, Runwei[1,2]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200030, Peoples R China;[2]East China Univ Sci & Technol, Shanghai Key Lab Intelligent Sensing & Detect Tech, Shanghai 200237, Peoples R China

年份：2024

卷号：490

外文期刊名：CHEMICAL ENGINEERING JOURNAL

收录：;EI(收录号：20241816002745);WOS:【SCI-EXPANDED(收录号:WOS:001236143400001)】；

基金：This research was supported by National Key R & D Program of China (2022YFA1200075) , Shanghai pilotProgram for Basic Research (grant no. 22TQ1400100-8) , Shanghai Pujiang Program (grant no. 20PJ1402500) , Natural Science Foundation of Shanghai (grant no. 22ZR1416600) and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Adsorption - Anodes - Bond strength (chemical) - Charging (batteries) - Density functional theory - Doping (additives) - High resolution transmission electron microscopy - Metal ions - Nitrogen - Sodium-ion batteries - Stability

摘要：Sodium dual -ion batteries (SDIBs) have attracted extensive attention due to the high working voltage and low cost. Nevertheless, lack of robust anode materials that can achieve highly efficient insertion/extraction of sodium ions still remains a huge challenge to develop the high -performance SDIBs. Herein, we exhibited excellent long-cycling performance (capacity retention of 85 % over 2000 cycles) with large reversible capacity (1788 mA h g -1 under 0.2 A/g) as well as superior rate capability (721 mA h g -1 under 10 A/g) for sodium -ion storage by encapsulating red phosphorus within nitrogen-doped mesoporous graphene particles. And the structural stability of composite during sodiation was directly demonstrated using in -situ transmission electron microscopy. The results of density functional theory reveal that nitrogen doping and formation of P - C chemical bonds within graphene matrix may improve the adsorption energy of P atoms and promote the sturdy contact. The adsorption energies of nitrogen-doped graphene for Na + and PF 6 - are -2.12 and -3.62 eV, respectively, which shows that the doping of N element is beneficial to the adsorption of Na + and PF 6 - . Upon pairing with nitrogen-doped mesoporous graphene particles as cathode, an innovative SDIBs with high energypower-density of 324 W h kg -1 at 331 W kg -1 and 187 W h kg -1 at 2665 W kg -1 were manufactured. This study opens up an effective strategy towards highperformance SDIBs for electric vehicles and other applications.