Modulating selective interaction of NiOOH with Mg ions for high-performance aqueous batteries  

作　　者：Bing He Ying Ling Zhixun Wang Wenbin Gong Zhe Wang Yanting Liu Tianzhu Zhou Ting Xiong Shuai Wang Yonggang Wang Qingwen Li Qichong Zhang Lei Wei 

机构地区：[1]School of Electrical and Electronic Engineering,Nanyang Technological University,50 Nanyang Avenue 639798,Singapore [2]Key Laboratory of Multifunctional Nanomaterials and Smart Systems,Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Sciences,Suzhou 215123,China [3]Department of Chemistry,Fudan University,Shanghai 200438,China [4]School of Physics and Energy,Xuzhou University of Technology,Xuzhou 221018,China

出　　处：《eScience》2024年第5期160-169,共10页电化学与能源科学（英文）

基　　金：This work was supported by the Singapore Ministry of Education Academic Research Fund Tier 2(MOE2019-T2-2-127 and MOE-T2EP50120-0002);supported by the National Key R&D Program of China(2022YFA1203304);the Natural Science Foundation of Jiangsu Province(BK20220288);the Singapore Ministry of Education Academic Research Fund Tier 1(RG62/22);A*STAR under AME IRG(A2083c0062);This work was supported by A*STAR under its IAF-ICP Programme I2001E0067;the Schaeffler Hub for Advanced Research at NTU.This work was also supported by NTU-PSL Joint Lab collaboration.We are grateful for the technical support of 2D GIWAXS for Nano-X from Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Sciences.This work was supported by the Singapore Ministry of Education Academic Research Fund Tier 2(MOE2019-T2-2-127 and MOE-T2EP50120-0002);supported by the National Key R&D Program of China(2022YFA1203304);the Natural Science Foundation of Jiangsu Province(BK20220288);the Singapore Ministry of Education Academic Research Fund Tier 1(RG62/22);A*STAR under AME IRG(A2083c0062);This work was supported by A*STAR under its IAF-ICP Programme I2001E0067;the Schaeffler Hub for Advanced Research at NTU.This work was also supported by NTU-PSL Joint Lab collaboration.We are grateful for the technical support of 2D GIWAXS for Nano-X from Suzhou Institute of Nano-Tech and Nano-Bionics,Chinese Academy of Sciences.

摘　　要：Aqueous Mg-ion batteries(AMIBs)featuring advantages of good safety,low cost,and high specific energy have been recognized as a promising energy-storage technology.However,the performance of AMIBs is consistently limited by sluggish diffusion kinetics and structural degradation of cathode materials arising from the strong electrostatic interactions between high-charge-density Mg2+and host materials.Here,layered-structured NiOOH,as traditional cathodes for alkaline batteries,is initially demonstrated to realize proton-assisted Mg-(de)intercalation chemistry with a high discharge platform(0.57V)in neutral aqueous electrolytes.Benefiting from the unique core/shell structure,the resulting NiOOH/CNT cathodes achieve a high capacity of 122.5 mAh g−1 and long cycle stability.Further theoretical calculations reveal that the binding energy of hydrated Mg2+is higher than that of Mg2+with NiOOH,resulting in that Mg2+is easily intercalated/de-intercalated into/from NiOOH.Benefiting from the freestanding design,the assembled fiber-shaped“rocking-chair”NaTi2(PO4)3//NiOOH AMIB shows a high energy density and satisfactory mechanical flexibility,which could be woven into a commercial fabric and power for fiber-shaped photoelectric sensors.

关 键 词：NiOOHAqueous electrolyte Mg-intercalation chemistry Rocking-chair Mg-ion batteries Fiber electronics 

分 类 号：TM91[电气工程—电力电子与电力传动]