Derivative Composite Materials from Vanadium-based Polyoxometalate Through High-temperature for Enhanced Electrochemical Lithium Storage
CHEN Bingsong, JIANG Yanling, MO Simei, CAI Pingxiong, LUO Xiangsheng*, CHAO Huixia*
Guangxi Key Laboratory of Green Chemical Materials and Safety Technology, School of Petroleum and Chemical Engineering, Beibu Gulf University, Qinzhou 535011, Guangxi, China
Abstract: The inherently low specific capacity of graphite anodes(372 mAh/g) has constrained performance breakthroughs in lithium-ion batteries, creating an urgent need for next-generation electrode materials. While polyoxometalates (POMs) exhibit promising potential as electrode-active components due to their molecularly tailorable architectures and multi-electron redox characteristics, their practical implementation faces critical challenges including structural instability during cycling, dissolution-induced capacity fading, and sluggish ion diffusion kinetics. To address these limitations, this study presents a rationally designed thermal conversion protocol that transforms manganese-incorporated vanadomanganate POM precursors into Mn/V co-optimized heterostructured composites for enhanced electrochemical lithium storage. Systematic characterization reveals that calcination temperature exerts precise control over the phase evolution and morphological reconstruction of derived materials. When subjected to optimal thermal treatment at 450 ℃(heating rate 5 ℃·min-1 under Ar atmosphere), the VM POM precursors underwent complete phase transformation into nanorod architectures consisting of monoclinic Na5V12O32 (JCPDS No.45-0412) and triclinic Mn2V2O7 (JCPDS No.49-0295), with homogeneous spatial distribution of V/Mn/O elements as evidenced by EDS elemental mapping. As a lithium-ion battery anode, cyclic voltammetry (CV) curves exhibited two reversible redox peak pairs at 1.02 V/0.57 V and 2.64 V/2.25 V (vs Li+/Li). The capacitive contribution reached 76.8% at 1.0 mV/s scan rate, with 40% capacity retention when current density increased from 0.1 A/g to 4.0 A/g. The composite delivered specific capacities of 790 mAh/g and 400 mAh/g at 0.1 A/g and 1.0 A/g after 100 and 1 000 cycles, respectively, with near-100% Coulombic efficiency and cycling retention rates approaching 100%.This thermal-derived composite demonstrates significantly enhanced lithium sto-rage performance compared to pristine POMs, highlighting the efficacy of the thermal conversion strategy in optimizing electrode materials.
1 Wang W H, Li S, Li W Y, et al. Journal of Energy Chemistry, 2025, 106, 151. 2 Yang X Y, Li W J, Tan Z L, et al. Journal of Materials Chemistry A, 2020, 8, 25316. 3 Sun Z P, Wang Y, Jiang X F, et al. Journal of Energy Chemistry, 2025, 2, 100149. 4 Chao H X, Qin H Q, Zhang M D, et al. Advanced Functional Materials, 2021, 31, 16, 2007636. 5 Li S L, Zhang J Q, Chao H X, et al. Journal of Alloys and Compounds, 2022, 918, 15, 165726. 6 Chao H X, Luo X S, Yan X M, et al. Journal of Colloid and Interface Science, 2024, 654(A), 107. 7 Wang G, Wang S, Sun X, et al. ACS Applied Energy Materials, 2022, 5, 1114. 8 Qiao C, Shang C, Zhou G, et al. Applied Surface Science, 2022, 605, 154780. 9 Jia X, Wang J, Hu H, et al. Chemistry A European Journal, 2020, 26(23), 5257. 10 Wu H, Hu H, Qin C, et al. Chemical Communications, 2020, 56(16), 2403. 11 Liu Y, Fang Y, Zhao Z, et al. Advanced Energy Materials, 2019, 9, 1803052. 12 Wang R, Lang J, Zhang P, et al. Advanced Functional Materials, 2015, 25, 2270. 13 Chao H X, Li Y N, Lu Y K, et al. Science China Materials, 2022, 65, 2958. 14 Shen F C, Guo C, Sun S N, et al. Inorganic Chemistry, 2022, 61(29), 11182. 15 Wang W W, Li S X, Ma Z H, et al. Electrochimica Acta, 2024, 487, 144188. 16 Cui H Y, Li S X, Zhuo J L, et al. Solid State Sciences, 2023, 138, 107132. 17 Han Z Y, Li X Y, Li Q, et al. ACS Applied Materials & Interfaces, 2021, 13, 6265. 18 He J, Shen L, Wu C, et al. Dalton Transactions, 2019, 48, 16000. 19 Bard A J.Electrochemical methods: fundamentals and applications, 2nd ed.(Shao Y H, Trans.), Chemical Industry Press, China, pp.34(in Chinese). 巴德. 电化学方法、原理与应用(第二版), 邵元华译, 化学工业出版社, 2005, pp.34. 20 Liu J, Chen Z, Chen S, et al. ACS Nano, 2017, 11(7), 6911. 21 Zhang G J, Zeng S Y, Duan L F, et al. ChemElectroChem, 2020, 7, 4663. 22 Li Y X, Qiu Y C, Yao G M, et al. Journal of Energy Storage, 2025, 115, 115993. 23 Zhong J J, Wang Z, Li J L. ACS Applied Nano Materials, 2024, 7, 17935. 24 Wang W W, Li S X, Ma Z H, et al. Electrochimica Acta, 2024, 487, 144188. 25 Xu C Y, Yang X, Hu C, et al. Composites Communications, 2024, 45, 101814. 26 Yuan G B, Ge H Y, Shi W X, et al. Angewandte Chemie International Edition, 2023, 62, e202309934. 27 Wang J W, Long G, Chao W, et al. Nano Energy, 2025, 136, 110742. 28 Zhou X Y, Li L Q, Zou H X, et al. Journal of Energy Storage, 2025, 112, 115591. 29 Marimuthu P, Swaminathan S, Chang W L, et al. New Journal of Che-mistry, 2023, 47, 5498. 30 Jagadis G, Liu Y, Gu J, et al. Journal of Colloid and Interface Science, 2022, 614, 642. 31 Li Q, Xu M Q, Wang T, et al. Chemistry-A European Journal, 2022, 28, e202200207.
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2026, Vol. 40 
