Electrode materials that rely on conversion reactions for lithium-ion batteries(LIBs)possess high energy densities.However,a key issue in their design is bolstering their stability and minimizing volume variations dur...Electrode materials that rely on conversion reactions for lithium-ion batteries(LIBs)possess high energy densities.However,a key issue in their design is bolstering their stability and minimizing volume variations during lithiation and delithiation.Herein,an effect-ive strategy was devised to fulfill the fully reversible conversion reaction for lithium storage in CoMoO_(4) through the hybridization of Co-MoO_(3).CoMoO_(3)/CoMoO_(4) with a nanorod structure was synthesized via one-step annealing treatment after a solvothermal process.In such a structure,the CoMoO_(3)/CoMoO_(4) nanorod can considerably boost mechanical robustness and offer ample space to counteract volume fluctuations throughout successive cycles owing to the cooperative interaction between CoMoO_(3) and CoMoO_(4).CoMoO_(3)/CoMoO_(4) exhib-ited superior lithium-storage capacity(919.6 mAh/g at 0.1 A/g after 200 cycles)and cycling stability(683.4 mAh/g at 1 A/g after 600 cycles).CoMoO_(3)/CoMoO_(4) showed a high potential as an anode material for LIBs.展开更多
基金supported by Jiangxi Provincial Natural Science Foundation,China(Nos.20242BAB25195 and 20224BAB211018)National Natural Science Foundation of China(No.12264029)+1 种基金the Scientific Research Foundation of Jiangxi Provincial Education Department,China(No.GJJ211944)the college Students’Innovation and Entrepreneurship Training program of Jiangxi Province,China.
文摘Electrode materials that rely on conversion reactions for lithium-ion batteries(LIBs)possess high energy densities.However,a key issue in their design is bolstering their stability and minimizing volume variations during lithiation and delithiation.Herein,an effect-ive strategy was devised to fulfill the fully reversible conversion reaction for lithium storage in CoMoO_(4) through the hybridization of Co-MoO_(3).CoMoO_(3)/CoMoO_(4) with a nanorod structure was synthesized via one-step annealing treatment after a solvothermal process.In such a structure,the CoMoO_(3)/CoMoO_(4) nanorod can considerably boost mechanical robustness and offer ample space to counteract volume fluctuations throughout successive cycles owing to the cooperative interaction between CoMoO_(3) and CoMoO_(4).CoMoO_(3)/CoMoO_(4) exhib-ited superior lithium-storage capacity(919.6 mAh/g at 0.1 A/g after 200 cycles)and cycling stability(683.4 mAh/g at 1 A/g after 600 cycles).CoMoO_(3)/CoMoO_(4) showed a high potential as an anode material for LIBs.
