1879568 LiPSs lithium polysulfides 480 1879577 LiPSs Li polysulfides 8 1879567 LiPSs lithium polysulfide intermediates 5 1879573 LiPSs lithium polysulfide species 4 1879575 LiPSs effectively inhibit polysulfides 1 1879576 LiPSs Li+ and electron transportation and meanwhile trap soluble polysulfide intermediates 1 1879571 LiPSs limit the diffusion of polysulfides 1 1879570 LiPSs limited by the shuttle effect of soluble polysulfides 1 1879569 LiPSs lithium ions (Li+) and polysulfides 1 1879572 LiPSs low electrical conductivity of polysulfides 1