Free-standing heterogeneous hybrid papers based on mesoporous gamma-MnO2 particles and acid-treated single-walled carbon nanotubes (a-SWCNTs) for lithium-ion battery anodes are successfully prepared by simple vacuum filtration. The mesoporous gamma-MnO2 particles with high surface areas are well dispersed throughout these anodes by being bound in nanoporous a-SWCNT networks. Furthermore, these anodes exhibit a high electrical conductivity of 2.5 x 10(2) S cm(-1) with high flexibility, which makes them substrate- and binder-free. For 50 wt% mesoporous gamma-MnO2 particle-loaded anodes, a high reversible capacity of 934 mA h g(-1) (0.01-3.0 V) is maintained after 150 cycles. (C) 2012 Elsevier B.V. All rights reserved.