Macroporous Li(Ni1/3Co1/3Mn1/3)O2 synthesized by a simple non-hydroxide route has been characterize as a high-energy and high-power positive electrode for rechargeable lithium batteries, exhibiting a discharge capacity of 195mAhg−1 at 1C (2244WhL−1) and 175mAhg−1 at 10C (2008WhL−1) and 99.99% capacity retention. Note the volumetric calculations are based on composite electrodes, not just the volume of the active material. Comparison between macroporous Li(Ni1/3Co1/3Mn1/3)O2 and the material synthesized by the conventional hydroxide method demonstrates that the latter shows a significant increase in polarization upon cycling whereas the former material does not. Cycling at 50°C shows that the macroporous material does exhibit more polarization at elevated temperatures. Macroporous Li(Ni1/3Co1/3Mn1/3)O2 has been tested with a graphite negative electrode in a rocking-chair cell. Cycling was inferior to that with a Li metal negative electrode, but the origin of this may lie with the negative electrode. Powder X-ray diffraction also collected on macroporous Li(Ni1/3Co1/3Mn1/3)O2 after 100 cycles to 4.2 and 4.6V, shows excellent structural stability, whereas cycling to 4.2V induces a reduction in the Li/Ni site exchange from 4% to 2%, no significant change occurs for cycling to 4.6V.