biostudies-literatureUnknown8(7)Lu ZSince sluggish Li⁺ desolvation leads to severe capacity degradation of carbon anodes at subzero temperatures, it is urgently desired to modulate electron configurations of surface carbon atoms toward high capacity for Li-ion batteries. Herein, a carbon-based anode material (O-DF) was strategically synthesized to construct the Riemannian surface with a positive curvature, which exhibits a high reversible capacity of 624 mAh g^-1 with an 85.9% capacity retention at 0.1 A g^-1 as the temperature drops to -20 °C. Even if the temperature drops to -35 °C, the reversible capacity is still effectively retained at 160 mAh g^-1 after 200 cycles. Various characterizations and theoretical calculations reveal that the Riemannian surface effectively tunes the lowACS central science905-914https://www.ebi.ac.uk/biostudies/studies/S-EPMC9335919biostudies-literatureRiemannian Surface on Carbon Anodes Enables Li-Ion Storage at -35 °C.PMC9335919Xie WYao JYang YLu ZZhang XGao ZWang XWang JCheng XYi DXu YfalseRiemannian Surface on Carbon Anodes Enables Li-Ion Storage at -35 °C.Since sluggish Li⁺ desolvation leads to severe capacity degradation of carbon anodes at subzero temperatures, it is urgently desired to modulate electron configurations of surface carbon atoms toward high capacity for Li-ion batteries. Herein, a carbon-based anode material (O-DF) was strategically synthesized to construct the Riemannian surface with a positive curvature, which exhibits a high reversible capacity of 624 mAh g^-1 with an 85.9% capacity retention at 0.1 A g^-1 as the temperature drops to -20 °C. Even if the temperature drops to -35 °C, the reversible capacity is still effectively retained at 160 mAh g^-1 after 200 cycles. Various characterizations and theoretical calculations reveal that the Riemannian surface effectively tunes the low2022-01-01T00:00:00Z2022 Jul2025-04-18T22:20:49.167Z2025-04-07T10:09:18.457ZS-EPMC93359193591235010.1021/acscentsci.2c00411